HPE 5920 series Installation manual

HPE 5920 & 5900 Switch Series
EVB Command Reference
Part number: 5998-6626s
Software version: Release 2422P01
Document version: 6W101-20171030

© Copyright 2016, 2017 Hewlett Packard Enterprise Development LP
The information contained herein is subject to change without notice. The only warranties for Hewlett Packard
Enterprise products and services are set forth in the express warranty statements accompanying such
products and services. Nothing herein should be construed as constituting an additional warranty. Hewlett
Packard Enterprise shall not be liable for technical or editorial errors or omissions contained herein.
Confidential computer software. Valid license from Hewlett Packard Enterprise required for possession, use, or
copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software
Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor’s
standard commercial license.
Links to third-party websites take you outside the Hewlett Packard Enterprise website. Hewlett Packard
Enterprise has no control over and is not responsible for information outside the Hewlett Packard Enterprise
website.
Acknowledgments
Intel®, Itanium®, Pentium®, Intel Inside®, and the Intel Inside logo are trademarks of Intel Corporation in the
United States and other countries.
Microsoft® and Windows® are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
Adobe® andAcrobat® are trademarks of Adobe Systems Incorporated.
Java and Oracle are registered trademarks of Oracle and/or its affiliates.
UNIX® is a registered trademark of The Open Group.

i
Contents
EVB commands···············································································1
bandwidth··························································································································1
default·······························································································································1
description·························································································································2
display evb cdcp ·················································································································3
display evb evb-tlv···············································································································4
display evb s-channel···········································································································6
display evb summary ···········································································································7
display evb vsi····················································································································7
display interface··················································································································9
evb default-manager··········································································································12
evb enable·······················································································································13
evb mac-learning forbidden ·································································································14
evb reflective-relay ············································································································14
evb s-channel···················································································································15
evb vdp timer keepalive exponent·························································································16
evb vdp timer resource-wait-delay exponent············································································18
evb vsi ····························································································································19
evb vsi active····················································································································20
evb vsi filter······················································································································21
interface··························································································································23
reset counters interface ······································································································24
shutdown·························································································································25
Document conventions and icons ······················································26
Conventions ···························································································································26
Network topology icons ·············································································································27
Support and other resources ····························································28
Accessing Hewlett Packard Enterprise Support ··············································································28
Accessing updates···················································································································28
Websites ·························································································································29
Customer self repair···········································································································29
Remote support ················································································································29
Documentation feedback ····································································································29
Index···························································································31

1
EVB commands
bandwidth
Use bandwidth to configure the expected bandwidth of an S-channel interface or a VSI interface.
Use undo bandwidth to restore the default.
Syntax
bandwidth bandwidth-value
undo bandwidth
Default
The expected bandwidth of an S-channel interface or a VSI interface is the default maximum
bandwidth of the physical port to which the S-channel interface or the VSI interface belongs.
Views
S-channel interface view, VSI interface view, S-channel aggregate interface view, VSI aggregate
interface view
Predefined user roles
network-admin
Parameters
bandwidth-value: Specifies the expected bandwidth in the range of 1 to 400000000 kbps.
Examples
# Set the expected bandwidth of S-Channel 1/0/1:10 to 2000000 kbps.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10
[Sysname–S-Channel1/0/1:10] bandwidth 2000000
# Set the expected bandwidth of S-Channel 1/0/1:10.1 to 2000000 kbps.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10.1
[Sysname–S-Channel1/0/1:10.1] bandwidth 2000000
default
Use default to restore the default settings for an S-channel interface or a VSI interface.
Syntax
default
Views
S-channel interface view, VSI interface view, S-channel aggregate interface view, VSI aggregate
interface view
Predefined user roles
network-admin

2
Usage guidelines
CAUTION:
The default command might interrupt ongoing network services. Make sure you are fully aware of
the impacts of this command when you execute it on a live network.
This command might fail to restore the default settings for some commands for reasons such as
command dependencies and system restrictions. Use the display this command in interface view to
identify these commands. Then use their undo forms or follow the command reference to
individually restore their default settings. If your restoration attempt still fails, follow the error
message instructions to resolve the problem.
Examples
# Restore the default settings for S-Channel 1/0/1:10.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10
[Sysname–S-Channel1/0/1:10] default
# Restore the default settings for S-Channel 1/0/1:10.1.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10.1
[Sysname–S-Channel1/0/1:10.1] default
description
Use description to configure a description for an interface.
Use undo description to restore the default.
Syntax
description text
undo description
Default
The default description for an interface is "interface name Interface." The following table shows
examples of interfaces and their default descriptions:
Interface Description
S-channel interface S-channel 1/0/1:10 S-channel 1/0/1:10 Interface
S-channel aggregate interface
Schannel-Aggregation 1:10 Schannel-Aggregation 1:10 Interface
VSI S-channel 1/0/1:10.1 S-channel 1/0/1:10.1 Interface
VSIaggregate interface
Schannel-Aggregation 1:10.1 Schannel-Aggregation 1:10.1 Interface
Views
S-channel interface view, S-channel aggregate interface view, VSI interface view, VSI aggregate
interface view
Predefined user roles
network-admin

3
Parameters
text: Specifies a description for the interface, a case-sensitive string of 1 to 255 characters.
Examples
# Configure the description for S-Channel 1/0/1:10 as S-Channel to lab.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10
[Sysname–S-Channel1/0/1:10] description S-Channel to lab
# Configure the description for Schannel-Aggregation 1:10 as Schannel-Aggregation to lab.
<Sysname> system-view
[Sysname] interface schannel-aggregation 1:10
[Sysname–Schannel-Aggregation1:10] description Schannel-Aggregation to lab
# Configure the description for S-Channel 1/0/1:10.1 as VSI to lab.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10.1
[Sysname–S-Channel1/0/1:10.1] description VSI to lab
# Configure the description for Schannel-Aggregation 1:10.1 as VSI-Aggregation to lab.
<Sysname> system-view
[Sysname] interface schannel-aggregation 1:10.1
[Sysname–Schannel-Aggregation1:10.1] description VSI-Aggregation to lab
display evb cdcp
Use display evb cdcp to display CDCP negotiation information.
Syntax
display evb cdcp [ interface interface-type interface-number ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface interface-type interface-number: Specifies an interface (Layer 2 Ethernet interface or
Layer 2 aggregate interface) by its type and number. If you do not specify an interface, the command
displays CDCP negotiation information for all interfaces with EVB enabled.
Examples
# Display CDCP negotiation information for all interfaces with EVB enabled.
<Sysname> display evb cdcp
---------------------------Bridge-Aggregation1---------------------
S-component capability : Local-supported/Remote-not supported
Supported S-Channel numbers per-port : Local-167/Remote-0
SVID range : 2-4094
SCID requested from remote :
SCID/SVID pair list allocated :

4
<1, 1>
---------------------------Ten-GigabitEthernet1/0/1---------------------
S-component capability : Local-supported/Remote-supported
Supported S-Channel numbers per-port : Local-167/Remote-167
SVID range : 2-4094
SCID requested from remote :
1, 2, 3, 4, 6, 10, 11, 12, 34, 35, 67
SCID/SVID pair list allocated :
<1, 1>, <2, 3>, <3, 2>, <4, 5>, <6, 4>,
<10, 9>, <11, 6>, <12, 7>, <34, 23>, <35, 35>,
<67, 67>
Table 1 Command output
Field Description
S-component capability Port-mapping S-VLAN component capability on the EVB bridge
and the EVB station.
Supported S-channel numbers per-port Number of S-channels supported by the EVB bridge and the EVB
station.
SVID range SVID range on the EVB bridge.
SCID requested from remote SCIDs requested by the EVB station in ascending order.
SCID/SVID pair list allocated List of (SCID, SVID) pairs allocated by the EVB bridge.
display evb evb-tlv
Use display evb evb-tlv to display S-channel EVB TLV negotiation information.
Syntax
display evb evb-tlv [ interface interface-type { interface-number | interface-number:channel-id } ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface: Specifies an interface. If you do not specify an interface, the command displays EVB TLV
negotiation information for all interfaces with EVB enabled.
interface-type { interface-number | interface-number:channel-id }: Specifies a Layer 2 Ethernet
interface, Layer 2 aggregate interface, S-channel interface, or an S-channel aggregate interface by
its type and number. The interface-number argument specifies a Layer 2 Ethernet interface or Layer
2 aggregate interface. The interface-number:channel-id argument specifies an S-channel interface
or S-channel aggregate interface.
Examples
# Display EVB TLV negotiation information for Ten-GigabitEthernet 1/0/1.
<Sysname> display evb evb-tlv interface ten-gigabitethernet 1/0/1

5
S-Channel1/0/1:1
EVB mode : Local-bridge/Remote-station
BGID status : Supported
Local RR capability : Supported
Local RR status : Disabled
Remote SGID status : Not supported
Remote RR request status : Not requested
Remote RR status : Unknown
Max ECP retry time : Local-3/Remote-NA/Operative-3
ULPPDU retransmission exponent : Local-16/Remote-NA/Operative-16
Resource wait-delay exponent : Local-20/Remote-NA/Operative-20
Reinit Keep-alive exponent : Local-25/Remote-NA/Operative-25
S-Channel1/0/1:100
EVB mode : Local-bridge/Remote-station
BGID status : Supported
Local RR capability : Supported
Local RR status : Disabled
Remote SGID status : Not supported
Remote RR request status : Not requested
Remote RR status : Unknown
Max ECP retry time : Local-3/Remote-NA/Operative-3
ULPPDU retransmission exponent : Local-16/Remote-NA/Operative-16
Resource wait-delay exponent : Local-20/Remote-NA/Operative-20
Reinit keep-alive exponent : Local-25/Remote-NA/Operative-25
Table 2 Command output
Field Description
EVB mode EVB mode:
•bridge—EVB bridge.
•station—EVB station.
BGID status Support for Group ID on the EVB bridge: •Supported.
•Not supported.
Local RR capability Support for the RR mode on the EVB bridge:
•Supported.
•Not supported.
Local RR status RR status on the EVB bridge after EVB TLV negotiation.
Remote SGID status Support for Group ID on the EVB station: •Supported.
•Not supported.
Remote RR request status Whether or not the EVB station has requested the RR mode:
•Requested.
•Not requested.

6
Field Description
Remote RR status
Whether or not the EVB station has enabled the RR mode after EVB
TLV negotiation:
•Enabled.
•Disabled.
•Unknown.
Max ECP retry time Maximum ECP retransmission times in this format: Local negotiation
value/Remote negotiation value/Operative value.
NA means no value is set on the remote EVB station.
ULPPDU retransmission exponent ECP retransmission exponent in this format: Local negotiation
value/Remote negotiation value/Operative value.
NA means no value is set on the remote EVB station.
Resource wait-delay exponent VDP resource-wait-delay exponent in this format: Local negotiation
value/Remote negotiation value/Operative value.
NA means no value is set on the remote EVB station.
Reinit keep-alive exponent VDP keepalive exponent in this format: Local negotiation
value/Remote negotiation value/Operative value.
NA means no value is set on the remote EVB station.
display evb s-channel
Use display evb s-channel to display S-channel information.
Syntax
display evb s-channel [ interface interface-type interface-number ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
interface interface-type interface-number: Specifies an interface (Layer 2 Ethernet interface or
Layer 2 aggregate interface) by its type and number. If you do not specify an interface, the command
displays S-channel information for all interfaces with EVB enabled.
Examples
# Display S-channel information for Ten-GigabitEthernet 1/0/1.
<Sysname> display evb s-channel interface ten-gigabitethernet 1/0/1
RR status: D -- Disabled, E -- Enabled
MAC learning: A -- Allowed, F -- Forbidden
S-Channel SVID Uptime RR MAC VSI
interface yyyy/mm/dd hh:mm:ss status learning number
SCH1/0/1:1 1 2012/12/17 03:43:13 D A 0
SCH1/0/1:100 100 2012/12/17 03:43:14 D A 2

7
Table 3 Command output
Field Description
S-Channel interface S-channel interface name.
Uptime Time when the S-channel was created.
VSI number Number of VSI interfaces created on the S-channel.
display evb summary
Use display evb summary to display the EVB summary.
Syntax
display evb summary
Views
Any view
Predefined user roles
network-admin
network-operator
Examples
# Display the EVB summary.
<Sysname> display evb summary
Default manager ID: 192.168.1.1
Port number: 80
Interface S-Channel number VSI number
XGE1/0/1 2 2
Table 4 Command output
Field Description
Default manager ID Address or name of the default VSI manager.
Port number Port number of the default VSI manager.
Interface Name of the interface with EVB enabled.
S-channel number Number of S-channels.
VSI number Number of VSI interfaces.
display evb vsi
Use display evb vsi to display VSI interface information.
Syntax
display evb vsi [ verbose ] [ interface interface-type { interface-number |
interface-number:channel-id | interface-number:channel-id.vsi-local-id } ]
Views
Any view

8
Predefined user roles
network-admin
network-operator
Parameters
verbose: Displays detailed VSI interface information. If you do not specify this keyword, the
command displays brief VSI interface information.
interface: Specifies an interface. If you do not specify an interface, the command displays VSI
interface information for all interfaces with EVB enabled.
interface-type { interface-number | interface-number:channel-id | interface-number:channel-id.
vsi-local-id }: Specifies a Layer 2 Ethernet interface , Layer 2 aggregate interface, S-channel
interface, S-channel aggregate interface, VSI interface, or a VSI aggregate interface by its type and
number.
•The interface-number argument specifies a Layer 2 Ethernet interface or Layer 2 aggregate
interface.
•The interface-number:channel-id argument specifies an S-channel interface or S-channel
aggregate interface.
•The interface-number:channel-id.vsi-local-id argument specifies a VSI interface or VSI
aggregate interface.
Examples
# Display brief VSI interface information for Ten-GigabitEthernet 1/0/1.
<Sysname> display evb vsi interface ten-gigabitethernet 1/0/1
Status: A -- Association, P -- Pre-association
VSI VTID Type Instance Status
interface version ID
SCH1/0/1:100.0 NA NA NA P
SCH1/0/1:100.1 NA NA NA A
# Display detailed VSI interface information for Ten-GigabitEthernet 1/0/1.
<Sysname> display evb vsi verbose interface ten-gigabitethernet 1/0/1
S-Channel1/0/1:100
S-Channel1/0/1:100.0,
VSI local-ID: 0, VSI type ID: NA, VSI type version: NA,
VSI instance ID: NA,
VSI manager ID: NA,
Current VDP status: Pre-association,
Filter type: VID,
Filter info:
<100>
S-Channel1/0/1:100.1,
VSI local-ID: 1, VSI type ID: 100, VSI type version: 0,
VSI instance ID: 11:2233:4455:6677:8899:1234:5678:9010,
VSI manager ID: NA,
Current VDP status: Association,
Filter type: MAC/VID,
Filter info:
<0011-2233-4455, 1000>

9
Table 5 Command output
Field Description
VSI interface Name of a VSI interface.
VTID/VSI type ID VSI type ID.
NA indicates no ID is specified.
Type version/VSI type
version VSI type version number.
NA indicates no version is specified.
Instance ID/VSI
instance ID VSI instance ID.
NA indicates no instance ID is specified.
Status Current status of a VSI interface.
VSI manager ID Address of the VSI manager.
NA indicates no VSI manager is specified.
Filter type
VSI filter type:
•GroupID/VID—Group ID values and VID values.
•GroupID/MAC/VID—Group ID values, MAC addresses, and VID values.
•VID—VLAN ID.
•MAC/VID—MAC addresses and VID values.
Filter info
VSI filters:
•In the format <VLAN ID>, meaning the VLAN to which the traffic belongs.
•In the format <MAC address, VLAN ID>, meaning the destination MAC for the
traffic and the VLAN to which the traffic belongs.
•In the format <GroupID, VLAN ID>, meaning the VLAN to which the traffic
belongs and the group to which the VLAN belongs.
•In the format <GroupID, MAC address, VLAN ID>, meaning the destination
MAC for the traffic, the VLAN to which the traffic belongs, and the group to
which the VLAN belongs.
display interface
Use display interface to display information about an S-channel interface, an S-channel aggregate
interface, a VSI interface, or a VSI aggregate interface.
Syntax
display interface [ s-channel | schannel-aggregation ] [ brief [ down ] ]
display interface [ { s-channel | schannel-aggregation } [ interface-number:channel-id |
interface-number:channel-id.vsi-local-id ] ] [ brief [ description ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
s-channel: Specifies an S-channel interface or a VSI interface.
schannel-aggregation: Specifies an S-channel aggregate interface or a VSI aggregate interface.

10
interface-number:channel-id: Specifies an S-channel interface or S-channel aggregate interface.
The interface-number argument specifies the interface where the S-channel resides. The channel-id
argument specifies the ID of the S-channel.
interface-number:channel-id.vsi-local-id: Specifies a VSI interface or VSI aggregate interface. The
interface-number argument specifies the interface where the S-channel resides. The channel-id
argument specifies the ID of the S-channel. The vsi-local-id argument specifies the local ID of the
VSI.
brief: Displays brief information. If you do not specify this keyword, the command displays detailed
information.
down: Displays information about interfaces in DOWN state and the causes. If you do not specify
this keyword, the command displays information about interfaces in all states.
description: Displays a complete interface description in brief information when you configure an
interface description string longer than 27 characters. If you do not specify this keyword, the
command displays only the first 27 characters in brief information.
Usage guidelines
If you do not specify the s-channel keyword, the command displays information about all interfaces.
If you specify the s-channel keyword but do not specify an S-channel interface or VSI interface, the
command displays information about all created S-channel interfaces and VSI interfaces.
Examples
# Display detailed information about S-Channel 1/0/1:10.
<Sysname> display interface s-channel 1/0/1:10
S-Channel1/0/1:10
Current state: UP
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 000c-29f9-366e
Description: S-Channel1/0/1:10 Interface
Bandwidth: 1000000kbps
Unknown-speed mode, unknown-duplex mode
Link speed type is autonegotiation, link duplex type is autonegotiation
PVID: 1
Port link-type: trunk
VLAN Passing: 1(default vlan), 2
VLAN permitted: 1(default vlan), 2
Trunk port encapsulation: IEEE 802.1q
Last clearing of counters: Never
Input (total): 6 packets, 384 bytes
Output (total): 18 packets, 1152 bytes
# Display brief information about S-Channel 1/0/1:10.
<Sysname> display interface s-channel 1/0/1:10 brief
Brief information on interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
SCH1/0/1:10 UP 10G(a) F(a) T 1
# Display detailed information about S-Channel 1/0/1:10.1.
<Sysname> display interface s-channel 1/0/1:10.1
S-Channel1/0/1:10.1

11
Current state: UP
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 000c-29f9-366e
Description: S-Channel1/0/1:10.1 Interface
Bandwidth: 1000000kbps
Last clearing of counters: Never
# Display brief information about S-Channel 1/0/1:10.1.
<Sysname> display interface s-channel 1/0/1:10.1 brief
Brief information on interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
SCH1/0/1:10.1 UP -- -- -- --
# Display brief information about all S-channel interfaces and VSI interfaces in DOWN state.
<Sysname> display interface s-channel brief down
Brief information on interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Interface Link Cause
SCH1/0/1:11 DOWN Not connected
SCH1/0/1:11.1 DOWN Not connected
Table 6 Command output
Field Description
Current state
Interface status:
•Administratively DOWN—The interface is administratively
down.
•DOWN—The interface is administratively up but physically
down.
•UP—The interface is both administratively and physically up.
Hardware Address Hardware address of the interface.
Description Description information for the interface.
Bandwidth Expected bandwidth for an S-channel interface or a VSI interface.
PVID Default VLAN ID of the interface.
Port link-type Link type of the interface.
Trunk port encapsulation Encapsulation type of the trunk port.
Last clearing of counters
Last time the reset counters interface command was executed to
clear interface statistics.
Never indicates interface statistics have never been cleared since
startup.
Input (total): 6 packets, 384 bytes Total number of packets and bytes that the S-channel interface
received.
Output (total): 18 packets, 1152 bytes Total number of packets and bytes that the S-channel interface
sent.

12
Field Description
Link
Physical connection status of an interface:
•UP—The interface is physically up.
•DOWN—The interface is physically down.
•ADM—The interface was shut down by using the shutdown
command. Bring it up by using the undo shutdown
command.
•Stby—A standby interface.
Duplex
Duplex mode of an interface:
•(a)/A—Autonegotiation.
•H—Half-duplex.
•F—Full-duplex.
Cause
Causes of a DOWN link:
•Administratively—The interface was shut down by executing
the shutdown command. To restore the physical state of the
interface, use the undo shutdown command.
•Not connected—No physical connection because of absence
or failure of network cables.
Related commands
reset counters interface
evb default-manager
Use evb default-manager to specify the default VSI manager.
Use undo evb default-manager to restore the default.
Syntax
evb default-manager { { ip ip-address | ipv6 ipv6-address | name name } [ port port-number ] |
local-server }
undo evb default-manager
Default
The default VSI manager is not specified.
Views
System view
Predefined user roles
network-admin
Parameters
ip ip-address: Specifies the IPv4 address of the default VSI manager.
ipv6 ipv6-address: Specifies the IPv6 address of the default VSI manager.
name name: Specifies the name of the default VSI manager, a case-insensitive string of 1 to 127
characters.
port port-number: Specifies the port number of the default VSI manager, in the range of 0 to 65535.
The default port number is 8080.
local-server: Specifies the device as the default VSI manager.

13
Usage guidelines
When the bridge receives a VDP packet (except for a De-Associate packet) from a station, it
contacts the VSI manager specified in the VDP packet to get VSI interface resources and policies.
The VSI manager ID TLV in a VDP packet carries the VSI manager's IP address. If the value for the
TLV is 0, the bridge communicates with the default VSI manager specified by this command.
Examples
# Set the IPv4 address of the default VSI manager to 192.168.100.20.
<Sysname> system-view
[Sysname] evb default-manager ip 192.168.100.20
evb enable
Use evb enable to enable EVB on an interface.
Use undo evb enable to disable EVB on an interface.
Syntax
evb enable
undo evb enable
Default
EVB is disabled on an interface.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Usage guidelines
Follow these guidelines when you enable or disable EVB on an interface:
•Do not enable EVB on a member port of an aggregation group, or add a member port with EVB
enabled into an aggregation group. Otherwise, an error message appears.
•Restore all default settings for an interface before enabling EVB on the interface.
•A default S-channel is created on an interface after EVB is enabled on the interface, with both
SCID and SVID as 1. After an S-channel is created, an S-channel interface or S-channel
aggregate interface is created and operates in access mode.
•Do not configure VLAN settings or enable any other Layer 2 protocol on an interface with EVB
enabled.
•Delete all non-default S-channels on an interface before disabling EVB on the interface. The
default S-channel is deleted after EVB is disabled.
•Do not enable both EVB and QinQ on the same interface.
•Do not create a service instance for an interface enabled with EVB, and vice versa.
Examples
# Enable EVB on Ten-GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] evb enable
# Enable EVB on Bridge-Aggregation 1.
<Sysname> system-view

14
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] evb enable
Related commands
evb s-channel
qinq enable (see Layer 2—LAN Switching)
service-instance (see MPLS)
evb mac-learning forbidden
Use evb mac-learning forbidden to disable the MAC address learning function for an S-channel.
Use undo evb mac-learning forbidden to enable the MAC address learning function for an
S-channel.
Syntax
evb mac-learning forbidden
undo evb mac-learning forbidden
Default
The MAC address learning function for an S-channel is enabled.
Views
S-channel interface view, S-channel aggregate interface view
Predefined user roles
network-admin
Usage guidelines
For an S-channel with the RR mode disabled, do not disable its MAC address learning function.
Otherwise, the EVB bridge might fail to forward traffic from VMs on the EVB station.
After you disable the MAC address learning function for an S-channel, packets with an unknown
source MAC address are discarded.
Examples
# Disable the MAC address learning function on S-Channel 1/0/1:10.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10
[Sysname-S-Channel1/0/1:10] evb mac-learning forbidden
# Disable the MAC address learning function on Schannel-Aggregation 1:10.
<Sysname> system-view
[Sysname] interface schannel-aggregation 1:10
[Sysname–Schannel-Aggregation1:10] evb mac-learning forbidden
Related commands
evb reflective-relay
evb reflective-relay
Use evb reflective-relay to enable the RR mode for an S-channel.
Use undo evb reflective-relay to disable the RR mode for an S-channel.

15
Syntax
evb reflective-relay
undo evb reflective-relay
Default
The RR mode for an S-channel is disabled.
Views
S-channel interface view, S-channel aggregate interface view
Predefined user roles
network-admin
Usage guidelines
EVB TLVs exchanged through LLDP allow an EVB station and EVB bridge to negotiate the use of
reflective relay (RR). If the EVB station requests to use the RR mode and the EVB bridge supports
the RR mode, the bridge performs the following operations:
•Automatically enables the RR mode for the S-channel
•Adds the corresponding command line to the configuration file.
You can also use this command to manually enable or disable the RR mode for an S-channel.
Examples
# Enable the RR mode on S-Channel 1/0/1:10.
<Sysname> system-view
[Sysname] interface s-channel 1/0/1:10
[Sysname-S-Channel1/0/1:10] evb reflective-relay
# Enable the RR mode on Schannel-Aggregation 1:10.
<Sysname> system-view
[Sysname] interface schannel-aggregation 1:10
[Sysname–Schannel-Aggregation1:10] evb reflective-relay
evb s-channel
Use evb s-channel to create an S-channel on an interface.
Use undo evb s-channel to remove an S-channel on an interface.
Syntax
evb s-channel channel-id [ service-vlan svlan-id ]
undo evb s-channel channel-id
Default
Only an automatically created default S-channel (with both SCID and SVID as 1) exists on an
interface with EVB enabled.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin

16
Parameters
channel-id: Specifies an S-channel ID (SCID) in the range of 2 to 167. 0is the reserved SCID, and 1
is the default SCID.
svlan-id: Specifies an S-VLAN ID (SVID) in the range of 2 to 4094. 1is the SVID for the default
S-channel. If you do not specify this argument, the system automatically assigns the minimum SVID
that is not used by other S-channels.
Usage guidelines
An S-channel interface is associated with the S-channel that is created on a Layer 2 Ethernet
interface. An S-channel aggregate interface is associated with the S-channel that is created on a
Layer 2 aggregate interface.
•An S-channel is automatically created through CDCP, and the command line corresponding to
the action is added to the configuration file on the bridge. You can also manually create an
S-channel by using this command. If an (SCID, SVID) pair for an S-channel is created both
automatically and manually, the automatically created S-channel takes precedence.
•After an S-channel is created, an S-channel interface or S-channel aggregate interface is
generated. Removing an S-channel also removes the S-channel interface or S-channel
aggregate interface. A manually created S-channel interface or S-channel aggregate interface
operates in access mode, and an S-channel interface or S-channel aggregate interface that is
automatically created through CDCP operates in trunk mode.
•Create an S-channel on an interface with EVB enabled. Otherwise, an error message appears.
•When you manually create an S-channel,do not use the SCID or SVID being used by any other
S-channel. Otherwise, an error message appears.
•To manually create or remove S-channel, disable CDCP that automatically performs these
operations.
Examples
# Create an S-channel on Ten-GigabitEthernet 1/0/1, with the SCID 10 and SVID 5.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] evb s-channel 10 service-vlan 5
# Create an S-channel on Bridge-Aggregation 1, with the SCID 10 and SVID 5.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] evb s-channel 10 service-vlan 5
Related commands
evb enable
interface
evb vdp timer keepalive exponent
Use evb vdp timer keepalive exponent to configure a VDP keepalive exponent.
Use undo evb vdp timer keepalive exponent to restore the default.
Syntax
evb vdp timer keepalive exponent value
undo evb vdp timer keepalive exponent
Default
The VDP keepalive exponent is 20.

17
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Parameters
value: Specifies a VDP keepalive exponent in the range of 14 to 31.
Usage guidelines
The value for VDP keepalive time is expressed by the following equation:
VDP keepalive time (seconds) = 1.5 × [ 2VDP keepalive + (2 × ECP maximum retransmission time + 1) ×
2ECP retransmission ] × 10—5
For detailed values, see Table 7.
Table 7 uses 3and 16 (the defaults) as the ECP maximum retransmission time and the ECP
retransmission exponent to calculate the VDP keepalive time. These two variables use the larger
values proposed by the station and bridge through EVB TLV.
The network environment and configurations on the EVB bridge and station determine whether to
use the defaults or the actual proposed values for the following ECP values:
•ECP maximum retransmission time.
•ECP retransmission exponent.
Table 7 Values for VDP keepalive time
VDP keepalive exponent Calculated value (seconds) Result value (seconds)
14 7.12704 8
15 7.37280 8
16 7.86432 8
17 8.84736 9
18 10.81344 11
19 14.7456 15
20 22.60992 23
21 38.33856 39
22 69.795084 70
23 132.7104 133
24 258.53952 259
25 510.19776 511
26 1013.51424 1014
27 2020.1472 2021
28 4033.41312 4034
29 8059.94496 8060
30 16113.00864 16114
31 32219.136 32220