H3C SR8800 IM-FW-II Installation manual

H3C SR8800 10G Core Routers
Layer 2—WAN
Command Reference
Hangzhou H3C Technologies Co., Ltd.
http://www.h3c.com
Software version: SR8800-CMW520-R3347
Document version: 6W103-20120224

Copyright © 2011-2012, Hangzhou H3C Technologies Co., Ltd. and its licensors
All rights reserved
No part of this manual may be reproduced or transmitted in any form or by any means without prior
written consent of Hangzhou H3C Technologies Co., Ltd.
Trademarks
H3C, , Aolynk, , H3Care, , TOP G, , IRF, NetPilot, Neocean, NeoVTL,
SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG, V2G, VnG, PSPT,
XGbus, N-Bus, TiGem, InnoVision and HUASAN are trademarks of Hangzhou H3C Technologies Co.,
Ltd.
All other trademarks that may be mentioned in this manual are the property of their respective owners
Notice
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.

Preface
The H3C SR8800 documentation set includes 13 command references, which describe the commands
and command syntax options available for the H3C SR8800 10G Core Routers.
The Layer 2—WAN Command Reference describes WAN configuration commands, including
configuration commands for ATM, PPP, HDLC, and frame relay.
This preface includes:
•Audience
•Conventions
•About the H3C SR8800 documentation set
•Obtaining documentation
•Technical support
•Documentation feedback
Audience
This documentation is intended for:
•Network planners
•Field technical support and servicing engineers
•Network administrators working with the SR8800
Conventions
This section describes the conventions used in this documentation set.
Command conventions
Convention Descri
p
tion
Boldface Bold text represents commands and keywords that you enter literally as shown.
Italic Italic text represents arguments that you replace with actual values.
[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.
{ x | y | ... }
Braces enclose a set of required syntax choices separated by vertical bars, from which
you select one.
[ x | y | ... ]
Square brackets enclose a set of optional syntax choices separated by vertical bars, from
which you select one or none.
{ x | y | ... } *
Asterisk marked braces enclose a set of required syntax choices separated by vertical
bars, from which you select at least one.
[ x | y | ... ] *
Asterisk marked square brackets enclose optional syntax choices separated by vertical
bars, from which you select one choice, multiple choices, or none.
&<1-n> The argument or keyword and argument combination before the ampersand (&) sign can
be entered 1 to n times.

Convention Descri
p
tion
# A line that starts with a pound (#) sign is comments.
GUI conventions
Convention Descri
p
tion
Boldface Window names, button names, field names, and menu items are in Boldface. For
example, the New User window appears; click OK.
> Multi-level menus are separated by angle brackets. For example, File > Create > Folder.
Symbols
Convention Descri
p
tion
WARNING An alert that calls attention to important information that if not understood or followed can
result in personal injury.
CAUTION An alert that calls attention to important information that if not understood or followed can
result in data loss, data corruption, or damage to hardware or software.
IMPORTANT An alert that calls attention to essential information.
NOTE An alert that contains additional or supplementary information.
TIP An alert that provides helpful information.
Port numbering in examples
The port numbers in this document are for illustration only and might be unavailable on your router.
About the H3C SR8800 documentation set
The H3C SR8800 documentation set includes:
Cate
g
or
y
Documents Pur
p
oses
Product description and
specifications
Marketing brochures Describe product specifications and benefits.
Technology white papers
Provide an in-depth description of software features
and technologies.
Card datasheets Describe card specifications, features, and standards.
Hardware specifications
and installation
Compliance and safety
manual
Provides regulatory information and the safety
instructions that must be followed during installation.
Installation guide Provides a complete guide to hardware installation
and hardware specifications.
H3C N68 Cabinet
Installation and Remodel
Introduction
Guides you through installing and remodeling H3C
N68 cabinets.
H3C Pluggable SFP
[SFP+][XFP] Transceiver
Modules Installation
Guide
Guides you through installing SFP/SFP+/XFP
transceiver modules.

Cate
g
or
y
Documents Pur
p
oses
H3C High-End Network
Products Hot-Swappable
Module Manual
Describes the hot-swappable modules available for
the H3C high-end network products, their external
views, and specifications.
Software configuration Configuration guides Describe software features and configuration
procedures.
Command references Provide a quick reference to all available commands.
Operations and
maintenance Release notes
Provide information about the product release,
including the version history, hardware and software
compatibility matrix, version upgrade information,
technical support information, and software
upgrading.
Obtaining documentation
You can access the most up-to-date H3C product documentation on the World Wide Web
at http://www.h3c.com.
Click the links on the top navigation bar to obtain different categories of product documentation:
[Technical Support & Documents > Technical Documents] – Provides hardware installation, software
upgrading, and software feature configuration and maintenance documentation.
[Products & Solutions] – Provides information about products and technologies, as well as solutions.
[Technical Support & Documents > Software Download] – Provides the documentation released with the
software version.
Technical support
servi[email protected]
http://www.h3c.com
Documentation feedback
You can e-mail your comments about product documentation to [email protected].
We appreciate your comments.

i
Contents
ATM configuration commands···································································································································· 1
atm-link check ···························································································································································1
clock···········································································································································································1
display atm interface················································································································································2
display atm map-info ···············································································································································4
display atm pvc-info ·················································································································································5
display interface atm················································································································································7
eoapad enable ······················································································································································ 10
flag·········································································································································································· 11
frame-format··························································································································································· 12
interface atm ·························································································································································· 12
loopback ································································································································································ 13
map bridge ···························································································································································· 14
map ip ···································································································································································· 14
mtu ·········································································································································································· 15
oam cc end-to-end ················································································································································· 16
oam frequency······················································································································································· 17
oamping interface ················································································································································· 18
pvc ·········································································································································································· 19
pvc max-number ···················································································································································· 20
reset atm interface ················································································································································· 20
scramble ································································································································································· 21
service cbr······························································································································································ 22
service ubr······························································································································································ 23
service vbr-nrt························································································································································· 23
service vbr-rt··························································································································································· 24
shutdown ································································································································································ 25
threshold································································································································································· 26
PPP and MP configuration commands······················································································································28
PPP configuration commands········································································································································ 28
ip address ppp-negotiate······································································································································ 28
ip pool ···································································································································································· 28
link-protocol···························································································································································· 29
ppp authentication-mode······································································································································ 30
ppp chap password ·············································································································································· 31
ppp chap user························································································································································ 32
ppp ipcp remote-address forced·························································································································· 32
ppp pap local-user ················································································································································ 33
ppp timer negotiate··············································································································································· 34
remote address ······················································································································································ 34
timer hold ······························································································································································· 35
MP configuration commands ········································································································································ 36
default····································································································································································· 36
description······························································································································································ 37
display interface mp-group··································································································································· 37
display ppp mp ····················································································································································· 40
interface mp-group ················································································································································ 42
mtu ·········································································································································································· 42

ii
ppp mp endpoint··················································································································································· 43
ppp mp fragment enable······································································································································ 43
ppp mp max-bind ·················································································································································· 44
ppp mp min-fragment············································································································································ 45
ppp mp mp-group·················································································································································· 46
ppp mp short-sequence········································································································································· 47
reset counters interface mp-group························································································································ 47
shutdown ································································································································································ 48
HDLC configuration commands ································································································································49
link-protocol hdlc ··················································································································································· 49
timer hold ······························································································································································· 49
HDLC link bundling configuration commands··········································································································51
bundle id ································································································································································ 51
bundle max-active links········································································································································· 51
bundle member-priority········································································································································· 52
bundle min-active bandwidth ······························································································································· 53
bundle min-active links·········································································································································· 53
default····································································································································································· 54
description······························································································································································ 55
display bundle member hdlc-bundle ··················································································································· 55
display interface hdlc-bundle ······························································································································· 57
interface hdlc-bundle············································································································································· 60
mtu ·········································································································································································· 61
reset counters interface ········································································································································· 61
shutdown ································································································································································ 62
Frame relay configuration commands ······················································································································63
Basic frame relay configuration commands················································································································ 63
display fr inarp-info ··············································································································································· 63
display fr interface ················································································································································ 64
display fr lmi-info ··················································································································································· 65
display fr map-info ················································································································································ 66
display fr pvc-info ·················································································································································· 67
display fr statistics ················································································································································· 69
fr dlci······································································································································································· 70
fr inarp···································································································································································· 71
fr interface-type······················································································································································ 72
fr lmi n391dte························································································································································ 73
fr lmi n392dce ······················································································································································· 73
fr lmi n392dte························································································································································ 74
fr lmi n393dce ······················································································································································· 75
fr lmi n393dte························································································································································ 76
fr lmi t392dce ························································································································································ 77
fr lmi type ······························································································································································· 77
fr map ip································································································································································· 78
interface serial ······················································································································································· 79
link-protocol fr ························································································································································ 79
reset fr inarp··························································································································································· 80
reset fr pvc······························································································································································ 81
timer hold ······························································································································································· 81
MFR configuration commands ······································································································································ 82
display interface mfr ············································································································································· 82
display mfr ····························································································································································· 85
interface mfr ··························································································································································· 88

iii
link-protocol fr mfr ················································································································································· 89
mfr bundle-name···················································································································································· 90
mfr fragment··························································································································································· 90
mfr fragment-size ··················································································································································· 91
mfr link-name·························································································································································· 91
mfr retry ·································································································································································· 92
mfr timer ack ·························································································································································· 93
mfr timer hello························································································································································ 93
reset counters interface ········································································································································· 94
Modem management configuration commands ······································································································95
modem···································································································································································· 95
modem auto-answer·············································································································································· 95
modem timer answer············································································································································· 96
service modem-callback········································································································································ 97
Index ···········································································································································································98

1
ATM configuration commands
atm-link check
Syntax
atm-link check
undo atm-link check
View
ATM P2P subinterface view
Default level
2: System level
Parameters
None
Description
Use the atm-link check command to make the protocol state of the current ATM P2P subinterface
adaptive to the protocol state of the PVC configured on the subinterface in addition to the state of the
physical interface. Thus, the protocol state of the subinterface is up only when both the physical interface
and the PVC configured on the subinterface are up. Otherwise, the protocol state of the subinterface is
down.
Use the undo atm-link check command to restore the default.
By default, the protocol of the ATM P2P subinterface goes up or comes down depending on the state of
the physical interface.
This command applies only to ATM P2P subinterfaces.
Examples
# Enable the protocol state of ATM P2P subinterface ATM 3/1/1.1 to change depending on the protocol
state of the physical interface and the protocol state of the PVCs configured on the subinterface.
<Sysname> system-view
[Sysname] interface Atm 3/1/1.1 p2p
[Sysname-Atm3/1/1.1] atm-link check
clock
Syntax
clock { master | slave }
undo clock
View
ATM interface view
Default level
2: System level

2
Parameters
master: Specifies the internal transmission clock (the master clock mode).
slave: Specifies the line clock (the slave clock mode).
Description
Use the clock command to specify the clock signal to be adopted by the current ATM interface.
Use the undo clock command to restore the default.
By default, an ATM interface uses line clock signal (slave).
When two routers are connected back-to-back through ATM interfaces, you must configure the clock
mode to master on one side and to slave on the other side.
NOTE:
•To have an ATM interface work in master clock mode, make sure that the clock modes of all the ATM
interfaces sharing the same slot are set to master.
•The effect of this command applies to both ATM main interface and subinterface. However, the
command is available only in ATM main interface view.
Related commands: display atm interface.
Examples
# Specify interface ATM 3/1/1 to operate in master clock mode.
<Sysname> system-view
[Sysname] interface Atm 3/1/1
[Sysname-Atm3/1/1] clock master
display atm interface
Syntax
display atm interface [ atm { interface-number | interface-number.subnumber } ] [ |{ begin | exclude |
include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface-number: Number of an ATM main interface.
interface-number.subnumber: Number of an ATM subinterface, in the range of 0 to 1023.
interface-number is the number of the ATM main interface.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.

3
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use the display atm interface command to display the detailed information of the specified ATM main
interface or subinterface or all ATM interfaces if no ATM interface is specified.
Examples
# Display the information of interface ATM 3/1/1.
<Sysname> display atm interface Atm 3/1/1
ATM interface Atm3/1/1, State UP
Port Information:
Maximum VCs: 1024
PVCs: 5, MAPs: 1
input pkts: 0, input bytes: 0, input pkt errors: 0
output pkts: 0, output bytes: 0, output pkt errors: 0
Main interface Information:
PVCs: 4, MAPs: 1
input pkts: 0, input bytes: 0, input pkt errors: 0
output pkts: 0, output bytes: 0, output pkt errors: 0
ATM interface Atm3/1/1.1, point-to-point, State UP
Subinterface Information:
PVCs: 1, MAPs: 0
input pkts: 0, input bytes: 0, input pkt errors: 0
output pkts: 0, output bytes: 0, output pkt errors: 0
Table 1 Output description
Field Description
ATM interface Atm3/1/1, State UP Name and state of the ATM interface
Port Information Information of the ATM interface
Maximum VCs Maximum number of VCs that can be created on the
ATM interface
PVCs Total number of PVCs configured on the ATM
interface, its main interface, or each subinterface
MAPs Number of mappings on the interface, its main
interface, or each subinterface
input pkts: 0, input bytes: 0, input pkt errors: 0 Received packets, bytes, and errors
output pkts: 0, output bytes: 0, output pkt errors: 0 Transmitted packets, bytes, and errors
Main interface Information Information of the main interface of the ATM interface
ATM interface Atm3/1/1.1, point-to-point, State UP Name, type and state of a subinterface on the main
interface
Sub-interface Information Information of the subinterface

4
display atm map-info
Syntax
display atm map-info [ interface atm { interface-number | interface-number.subnumber } [ pvc
{ pvc-name [ vpi/vci ] | vpi/vci } ] ] [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface-number: Number of an ATM main interface.
interface-number.subnumber: Number of an ATM subinterface, in the range of 0 to 1023.
interface-number is the number of the ATM main interface.
pvc-name: PVC name, a unique case-insensitive string of 1 to 16 characters on the specified ATM
interface. The name cannot be the same as any valid VPI/VCI pair. For example, the name 1/20 is not
allowed.
vpi/vci: VPI/VCI pair. VPI is short for virtual path identifier; its value ranges from 0 to 255. VCI is short
for virtual channel identifier; its value ranges from 0 to 1023. Because VCIs from 0 to 31 are reserved for
special purposes, do not use them in normal cases.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use the display atm map-info command to display the PVC mappings on the specified ATM main
interface, subinterface, PVC, or all ATM interfaces if no interface is specified.
Examples
# Display the PVC mappings on all ATM interfaces.
<Sysname> display atm map-info
Atm3/1/1, PVC 10/47, ETH, Virtual-Ethernet3/0/1, UP
Atm3/1/1, PVC 10/48, ETH, Virtual-Ethernet3/0/1, UP
Atm3/1/2, PVC 10/100, IP, State UP
100.11.1.1, vlink 327752
Table 2 Output description
Field Description
ATM3/1/1 Interface number
PVC 10/47 PVC identifier
IP/ETH Protocol type

5
Field Description
State PVC state
100.11.1.1 Protocol address
vlink 327752 Virtual link number
display atm pvc-info
Syntax
display atm pvc-info [ interface atm { interface-number | interface-number.subnumber } [ pvc { pvc-name
[ vpi/vci ] | vpi/vci } ] ] [ |{ begin | exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface-number: Specifies the number of an ATM main interface.
interface-number.subnumber: Number of an ATM subinterface, in the range of 0 to 1023.
interface-number is the number of the ATM main interface.
pvc-name: PVC name, a unique case-insensitive string of 1 to 16 characters on the specified ATM
interface. The name cannot be the same as any valid VPI/VCI pair. For example, the name 1/32 is not
allowed.
vpi/vci: VPI/VCI pair. VPI is short for virtual path identifier; its value ranges from 0 to 255. VCI is short
for virtual channel identifier; its value ranges from 0 to 1023. As VCIs from 0 to 31 are reserved for
special purposes, do not use them in normal cases.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use the display atm pvc-info command to display information about PVCs for the specified ATM main
interface, subinterface, PVC, or all ATM interfaces if no ATM interface is specified.
Examples
# Display the PVC information on all ATM interfaces.
<Sysname> display atm pvc-info
VPI/VCI | STATE | PVC-NAME | INDEX | ENCAP | PROT | INTERFACE
--------|---------|-----------|--------|--------|------|----------
1/32 |UP |toBeijing |0 |SNAP |IP |Atm3/1/1 (UP)
1/33 |UP |toShanghai |1 |SNAP |None |Atm3/1/1 (UP)

6
1/55 |UP |toDatacomm |2 |SNAP |ETH |Atm3/1/1.1 (UP)
2/66 |UP | |3 |SNAP |IP |Atm3/1/1.4 (UP)
2/101 |UP | |4 |SNAP |ETH |Atm3/1/1.2 (UP)
Table 3 Output description
Field Description
VPI/VCI VPI/VCI pair
STATE PVC state
PVC-NAME PVC name
INDEX Internal index of the PVC
ENCAP AAL5 encapsulation type of the PVC
PROT Upper protocol running on the PVC
INTERFACE Interface the PVC belongs to
# Display information about a specified ATM PVC.
<Sysname> display atm pvc-info interface Atm 3/1/1 pvc 1/100
Atm3/1/1, VPI: 1, VCI: 100, INDEX: 0
AAL5 Encaps: SNAP, Protocol: IP
Service-type: CBR, output-pcr: 200 kbps, CDVT: 500 us
OAM interval: 0 sec(disabled), OAM retry interval: 1 sec
OAM retry count (up/down): 3/5
OAM ais-rdi count (up/down): 3/1
input pkts: 0, input bytes: 0, input pkt errors: 0
output pkts: 0, output bytes: 0, output pkt errors: 0
Interface State: UP, OAM State: UP, PVC State: UP
OAM cells received: 42
F5 InEndloop: 0, F5 InAIS: 42, F5 InRDI: 0
OAM cells sent: 0
F5 OutEndloop: 0
OAM cell drops: 0
OAM CC State: No CC Alarm
Table 4 Output description
Field Descri
p
tion
VPI The virtual path identifier of the specified ATM PVC.
VCI The virtual channel identifier of the specified ATM PVC.
INDEX Internal index of the PVC.
AAL5 Encaps AAL5 encapsulation type of the PVC.
Protocol Upper layer protocol running on the PVC.
Service-type Service type.
OAM interval Interval at which OAM F5 loopback cells are sent.
OAM retry interval Interval at which the system retransmits OAM F5 loopback cells.
OAM retry count Number of OAM cells transmitted before a PVC is declared up or down.

7
Field Descri
p
tion
OAM ais-rdi count
Number of OAM AIS/RDI cells for the router to receive before reporting that the
PVC is down; number of seconds for the router to wait before reporting that the
PVC is up after the PVC has stopped receiving OAM AIS/RDI cells.
input pkts: Count of received packets.
input bytes: Count of received bytes.
input pkt errors: Count of received error packets.
output pkts Count of transmitted packets.
output bytes Count of transmitted bytes.
output pkt errors Count of transmitted error packets.
Interface State Link layer protocol status of the interface.
OAM State OAM status.
PVC State PVC status.
OAM cells received Count of received OAM cells.
F5 InEndloop Count of received F5 loopback cells.
F5 InAIS
Count of received AIS cells.
If the AIS alarm state is not supported, this command displays only the count of
AIS cells, not the AIS alarm state, that is, the OAM AIS State field.
F5 InRDI
Count of received RDI cells.
If the RDI alarm state is not supported, this command displays only the count of
RDI cells, not the RDI alarm state, that is, the OAM RDI State field.
OAM cells sent Count of transmitted OAM cells.
F5 OutEndloop Count of transmitted F5 loopback cells.
OAM AIS State
AID alarm state.
If the AIS alarm state is supported, this command displays only the AIS alarm
state, not the count of received AIS cells, that is, the F5 InAIS field.
OAM RDI State If the RDI alarm state is supported, this command displays only the RDI alarm
state, not the count of received RDI cells, that is, the F5 InRDI field.
OAM cell drops Count of dropped OAM cells.
OAM CC State
OAM CC alarm state:
•A dash (–)—The system does not support obtaining OAM CC state.
•No CC Alarm—No OAM CC alarm is present.
•E2E CC Alarm—An end-to-end OAM CC alarm is present.
•SEG CC Alarm—A segment OAM CC alarm is present (currently not
supported).
display interface atm
Syntax
display interface atm [ interface-number | interface-number.subnumber ] [ |{ begin | exclude | include }
regular-expression ]

8
View
Any view
Default level
1: Monitor level
Parameters
interface-number: Specifies the number of an ATM main interface.
subnumber: Specifies the number of an ATM subinterface, in the range of 0 to 1023. It is separated from
the main interface by a dot (.).
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Description
Use the display interface atm command to display the configuration and state information of the
specified ATM interface or all ATM interfaces if no interface is specified.
Examples
# Display the configuration and state information of interface ATM 4/1/2.
<Sysname> display interface Atm 4/1/2
Atm4/1/2 current state: UP
Line protocol current state: UP
Description: Atm4/1/2 Interface
The Maximum Transmit Unit is 1200
Internet protocol processing : disabled
AAL enabled: AAL5, Maximum VCs: 1024
Current VCs: 100 (0 on main interface)
Current VPs: 0 (0 on main interface)
Port connector type is OC3/STM_1_SR_SFP
Physical layer is packet over SDH
Port speed type: STM-1
Loopback is not set
Clock source: Slave
Clock grade: Quality unknown(existing synchronization network)
SPE scrambling: Enable
BER thresholds:
SD: 10e-6 SF: 10e-3
Regenerator section layer:
J0(TX): "h3c"
68 33 63 00 00 00 00 00 00 00 00 00 00 00 00 00
J0(RX): "h3c"
68 33 63 00 00 00 00 00 00 00 00 00 00 00 00 00
Alarm: NONE

9
Error: 0 BIP(B1)
Multiplex section layer:
Alarm: NONE
Error: 0 BIP(B2), 0 REI(M1)
Higher order path layer:
C2(TX): 0x13 C2(RX): 0x13
J1(TX): "h3c"
68 33 63 00 00 00 00 00 00 00 00 00 00 00 00 00
J1(RX): "h3c"
68 33 63 00 00 00 00 00 00 00 00 00 00 00 00 00
Alarm: NONE
Error: 0 BIP(B3), 0 REI(G1)
0 PJE, 0 NJE
Last 300 seconds input: 57615 packets/s, 6387965 bytes/s
Last 300 seconds output: 46113 packets/s, 8852949 bytes/s
Input : 184384723 packets, 18819825504 bytes, 0 buffers
0 errors, 0 crcs, 0 lens, 0 giants,
0 pads, 0 aborts, 0 timeouts,
0 overflows, 0 overruns, 0 no buffer
Output: 60804502 packets, 11674011408 bytes, 0 buffers
0 errors, 0 overflows, 0 underruns
Peak value of input: 0 bytes/sec, at 2010-12-27 06:15:45
Peak value of output: 0 bytes/sec, at 2010-12-27 06:15:45
Table 5 Output description
Field Descri
p
tion
Atm4/1/2 current state Physical state of the interface
Line protocol current state Link layer state of the interface
AAL enabled: AAL5, Maximum VCs:
1024 AAL type and the maximum number of VCs allowed on the interface
Current VCs VCs configured on the interface
Current VPs VPs configured on the interface
Port connector type Optical module type of the interface
Physical layer Framing format of the interface
Port speed type Transmission rate of the interface
Loopback Loopback mode of the interface
Clock Source Clock mode of the interface
Clock grade Clock grade of the interface
SPE scrambling Scrambling mode of the interface
BER thresholds Signal degrade (SD) alarm threshold and signal fail (SF) alarm
threshold of the interface
J0(Rx) J0 overhead byte expected to receive on the interface
J0(Tx) J0 overhead byte transmitted by the interface

10
Field Descri
p
tion
J1(Rx) J1 overhead byte expected to receive on the interface
J1(Tx) J1 overhead byte transmitted by the interface
C2(RX) C2 overhead byte expected to receive on the interface
C2(TX) C2 overhead byte transmitted by the interface
Regenerator section layer: Alarm and error statistics of the regenerator section
Multiplex section layer: Alarm and error statistics of the multiplex section
Higher order path layer: Alarm and error statistics of the high order path
Alarm Alarm statistics
Error Error statistics
Peak value of input Peak value of packets received on the interface
Peak value of output Peak value of packets transmitted on the interface
eoapad enable
Syntax
eoapad enable
undo eoapad enable
View
ATM main interface view
Default level
2: System level
Parameters
None
Description
Use the eoapad enable command to enable Ethernet packet padding on an ATM interface.
Use the undo eoapad enable command to disable the function.
By default, Ethernet packet padding is disabled.
When you enable this function on an ATM interface, the interface fills in a sent EoA packet to 60 bytes
if the packet (including the frame header) is smaller than 60 bytes.
Examples
# Enable Ethernet packet padding on interface ATM 3/1/1.
<Sysname> system-view
[Sysname] interface Atm 3/1/1
[Sysname-Atm3/1/1] eoapad enable
NOTE:
This command is also enabled on the ATM subinterfaces when it is enabled on the ATM main interface.

11
flag
Syntax
flag c2 flag-value
undo flag c2
flag { j0 | j1 } { sdh | sonet } flag-value
undo flag { j0 | j1 } { sdh | sonet }
View
ATM main interface view
Default level
2: System level
Parameters
c2 flag-value: Path signal flag byte, a higher-order path overhead byte that indicates the multiplex
structure of virtual container (VC) frames and property of payload. It is a hexadecimal number in the
range of 0 to FF.
j0 flag-value: Regeneration section trace message, a section overhead byte that tests continuity of the
connection between two interfaces at the section level. If the sdh keyword is configured, the flag-value
argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a
hexadecimal number in the range of 0 to FF.
j1 flag-value: Path trace message, a higher-order path overhead byte that tests continuity of the
connection between two interfaces at the path level. If the sdh keyword is configured, the flag-value
argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a
string of 1 to 62 characters.
sdh: Sets framing format to Synchronous Digital Hierarchy (SDH).
sonet: Sets framing format to Synchronous Optical Network (SONET).
Description
Use the flag command to set the SONET/SDH overhead bytes.
Use the undo flag command to restore the default.
By default, the default SDH overhead bytes are used.
The default overhead bytes are as follows.
•c2: 0x13
•j0 (SDH): Null
•j1 (SDH): Null
Inconsistency between the c2 and j1 settings of the sending end and those of the receiving end causes
alarms.
The j0 byte can be any character in the network of the same carrier. If networks of two carriers are
involved, the sending and receiving routers at network borders must use the same j0 byte. With the j0
byte, operators can detect and troubleshoot faults in advance or use less time to recover the networks.
The inconsistent j0 byte settings at the sending and receiving ends cause alarms in SDH frames but do
not in SONET frames.

12
Examples
# Set the SDH overhead byte J0 of ATM interface ATM 3/1/1.
<Sysname> system-view
[Sysname] interface Atm 3/1/1
[Sysname-Atm3/1/1] flag j0 sdh ff
frame-format
Syntax
frame-format { sdh | sonet }
undo frame-format
View
ATM main interface view
Default level
2: System level
Parameters
sdh: Sets the framing format to SDH STM-1/STM-4.
sonet: Sets the framing format to SONET OC-3/OC-12.
Description
Use the frame-format command to set the framing format for an ATM interface.
Use the undo frame-format command to restore the default.
By default, the framing format of an ATM interface is SDH STM-1/STM-4.
Examples
# Set the framing format of ATM 3/1/1 to SONET OC-3/OC-12.
<Sysname> system-view
[Sysname] interface Atm 3/1/1
[Sysname-Atm3/1/1] frame-format sonet
interface atm
Syntax
interface atm { interface-number | interface-number.subnumber [ p2mp | p2p ] }
undo interface atm interface-number.subnumber
View
System view
Default level
2: System level
Parameters
interface-number: ATM main interface number.
subnumber: ATM subinterface number, in the range of 0 to 1023.