Cisco Catalyst 4224 How to use

Corporate Headquarters:
Copyright © 2001. Cisco Systems, Inc. All rights reserved.
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Release Notes for Cisco Catalyst 4224
Access Gateway Switch for
Cisco IOS Release 12.1(5)YE3
October 8, 2001
Note You can find the most current Cisco IOS documentation on Cisco.com. This set of electronic
documents may contain updates and modifications made after the hard-copy documents were printed.
These release notes for the Cisco Catalyst 4224 Access Gateway Switch describe the enhancements
provided in Cisco IOS Release 12.1(5)YE3. These release notes are updated as needed.
Contents
These release notes describe the following topics:
•Introduction, page 2
•System Requirements, page 2
•New and Changed Information, page 3
•Important Notes, page 5
•Caveats, page 12
•Related Documentation, page 13
•Obtaining Documentation, page 24
•Obtaining Technical Assistance, page 25

2
Introduction OL-1798-01
Introduction
Introduction
The Cisco Catalyst 4224 Access Gateway Switch is an Ethernet switching router that provides Voice
over IP (VoIP) gateway and IP telephony services. It is designed to be part of a centralized
Cisco CallManager application.
System Requirements
This section describes the system requirements for Cisco IOS Release 12.1(5)YE3 and includes the
following sections:
•Memory Recommendations, page 2
•Supported Hardware, page 2
•Determining the Software Version, page 2
Memory Recommendations
Supported Hardware
Cisco IOS Release 12.1(5)YE3 supports:
•Cisco Catalyst 4224 Access Gateway Switch
Determining the Software Version
To determine the version of Cisco IOS software running on your Cisco Catalyst 4224 Access Gateway
Switch, log in to the Cisco Catalyst 4224 Access Gateway Switch and enter the show version EXEC
command:
Router> show version
Cisco Internetwork Operating System Software
IOS (tm) 12.1(5) Software (c4224-isx3-mz), Version 12.1(5)YE3, RELEASE SOFTWARE
Table 1 Minimum Memory Recommendations for the Cisco Catalyst 4224 Access Gateway Switch
Platforms Image Name Software Image
Flash
Memory
Recommended
DRAM
Memory
Recommended Runs From
Cisco c4224 IP Plus (standard) c4224-isx3-mz 32 MB Flash 64 MB DRAM RAM
IP Plus / FW c4224-io3sx3-mz 32 MB Flash 64 MB DRAM RAM
IP Plus / IPsec 56 c4224-isx356i-mz 32 MB Flash 64 MB DRAM RAM
IP Plus / IPsec 56 / FW c4224-io3sx356i-mz 32 MB Flash 64 MB DRAM RAM
IP Plus / 3DES c4224-ik2sx3-mz 32 MB Flash 64 MB DRAM RAM
IP Plus / 3DES / FW c4224-ik2o3sx3-mz 32 MB Flash 64 MB DRAM RAM

3
New and Changed Information
OL-1798-01
New and Changed Information
New and Changed Information
The following sections list the new hardware and software features as well as bug fixes in Cisco IOS
Release 12.1(5)YE and subsequent releases.
New Hardware Features in Cisco IOS Release 12.1(5)YE
Cisco IOS Release 12.1(5)YE supports the Catalyst 4224 Access Gateway Switch.
New Software Features in Cisco IOS Release 12.1(5)YE1
Cisco IOS Release 12.1(5)YE1 supports Survivable Remote Site Telephony (SRST).
New Software Features in Cisco IOS Release 12.1(5)YE2
Cisco IOS Release 12.1(5)YE2 supports:
•CLI to disable 8 Port FXS Module voice ports
•Inline power for 24 phones of 7910/7940/7960 family
•Firewall feature set: NAT, Proxy, CBAC, and IDS
Bug Fixes
This section lists bugs that have been fixed or resolved in the various software releases for the
Catalyst 4224.
Bug Fixes in Cisco IOS Release 12.1(5)YE2
The following reported bugs have been fixed or resolved in Cisco IOS Release 12.1(5)YE2:
•CSCdu66264
New DSP (3.3.81) with echo canceller fix and FAX relay fix.
•CSCdu68219
Ports do not work after reloading the gateway.
•CSCdu89151
Loss of IP connectivity within the same VLAN of the Catalyst 4224.
The Catalyst 4224 connects multiple devices within the same VLAN. At some point, a device can
lose IP connectivity to other devices connected to the same switch; however, this same device retains
IP connectivity to the switch itself. Other devices connected directly to this switch lose IP
connectivity to the failed device, yet these other devices maintain IP connectivity with each other.
Remote devices maintain IP connectivity to all devices connected to the switch.

4
Bug Fixes OL-1798-01
New and Changed Information
•CSCdv01742
IP phones in fallback mode connected to the Catalyst 4224 are unable to transfer calls.
When IP phones are connected to the Catalyst 4224 and they are operating in fallback mode, these
phones lose the ability to transfer calls. If a user tries to transfer to an invalid directory number, the
transferring phone receives a reorder tone but is able to resume the original call. However, if the user
enters a valid directory number, both the calling phone and the transferring phone are disconnected.
•CSCdv02746
ISDN BRI on the Catalyst 4224 cannot receive calls on the second B-channel.
This problem occurs in a Catalyst 4224 with an ISDN BRI interface module. The first B-channel of
the BRI interface module can receive calls, but the second B-channel cannot. When a call is sent to
the second B-channel number, the router sees two ISDN SETUP messages approximately 3 seconds
apart. For the first SETUP message, the router does not answer. For the second SETUP message, the
router responds with a DISCONNECT with Cause i = 0x80A2 (No circuit/channel available). All
the ISDN SETUP messages for both calls contain the channel id = 0x89.
At this point, if someone tries to call the first B-channel number again, the call will not work. You
have to perform a shut/no shut to the BRI interface before the first B-channel can receive calls
again. In addition, you will have to wait for some time before you can call the router. If you call the
first B-channel right after Layer 2 is up, the router will respond with a DISCONNECT message with
Cause i = 0x80AF (Quality of service unavailable). This error occurs because the VTSP still shows
that the router is in the S_CONNECT state. Only after a while does the router go back to a normal
state, and call can be place to the first B-channel again. This behavior is cyclical.
From the show and debug commands, it appears that the router did not release the CCB for the first
call to the first B-channel. The sh isdn status command shows that there are no Layer 3 calls active,
but there is still a CCB present for the VOICE. This occurs only after a call is placed to the second
B-channel of the BRI interface.
•CSCdv08920
FXO supervisor disconnect fails on incoming calls.
Incoming calls to the FXO port may ring a device such as an IP phone connected to the
Catalyst 4224. If the caller goes back on-hook within a few seconds, the called phone continues to
ring. The remote on-hook is apparently not being detected.
•CSCdv12080
IP phones are not getting powered up.
Bug Fixes in Cisco IOS Release 12.1(5)YE3
The following reported bugs have been fixed or resolved in Cisco IOS Release 12.1(5)YE3:
•CSCds63736
ATM interface crash due to CSCdr56182.
Fixed the interface null reference that caused the router to crash at boot time.
•CSCdu64055
ipx help not available.
Fixed CLI help function so that help text now displays for the ipx command.

5
Limitations and Restrictions
OL-1798-01
Limitations and Restrictions
•CSCdv28941
The ibd feature set is bundled with snasw; they need to be separated.
The ibd feature set is now available as a separate image or bundled with snasw.
•CSCdv45074
Serial TXCLK on SCC2 not programmed correctly.
The serial transmit clock was reprogrammed to produce the proper output signal.
Limitations and Restrictions
The following MIBs are supported:
•SNMP MIB-II
•ENTITY-MIB
•IF-MIB
•BRIDGE-MIB
The following Cisco proprietary MIBs are supported:
•CISCO-PROCESS-MIB
•CISCO-MEMORY-POOL-MIB
•CISCO-CDP-MIB
The following MIB will be supported later:
•CISCO-STACK-MIB
Important Notes
The following sections contain important notes about Cisco IOS Release 12.1(5)YE3 that can apply to
the Cisco Catalyst 4224 Access Gateway Switch.
Hardware Change in Catalyst 4224
Cisco IOS Release 12.1(5)YE3 is being shipped in conjunction with a hardware Engineering Change
Order (ECO) for the Catalyst 4224 platform. Cisco IOS Release 12.1(5)YE3 is backward compatible
with previous non-ECO hardware versions of the Catalyst 4224.
Note Cisco recommends that you do not run software releases prior Cisco IOS Release 12.1(5)YE3 on the
ECO hardware because serial WICs running in slot 1 might not operate correctly.
You can recognize ECO hardware by running the cookie command from ROMMON and looking at the
hardware revision level. All boards with a revision level of 1.3 (Major 01/Minor 03) or greater are ECO
hardware.

6
Tighten Screws on VICs and WICs OL-1798-01
Important Notes
Tighten Screws on VICs and WICs
You must tighten the screws when installing the interface cards in the Catalyst 4224 Access Gateway
Switch. If you do not tighten the screws properly, the VIC or WIC can malfunction.
TDM Clocking
The TDM clock reference on the Catalyst 4224 Access Gateway Switch can be derived from one of seven
sources. Each VIC slot that contains an E1/T1 card has five free running on-board clock sources and two
recovered clock sources.
The default reference is the on-board clock. You can use the frame-clock-select command to select one
of the E1/T1 ports as the primary reference. You can also use this command to select up to three
prioritized backups if the primary clock fails. Switching over to a backup source is non-revertive. The
system does not switch back to a higher priority clock if it recovers after a failure.
The frame-clock-select command has the following syntax:
[no] frame-clock-select priority E1/T1 slot/port
The clock source with priority one is the primary reference and the clock with priority four is the lowest
priority backup.
The clock reference selection that uses the frame-clock-select command is independent from the clock
selection between lines or internal on an E1/T1 controller. Framing and CRC errors due to clock slips
can be observed on E1/T1 interfaces if the on-board clock is used as the reference.
Need to Support 56 Kbps Operation for Slot 3 WIC
The 8260 Rev1A device in the Catalyst 4224 Access Gateway Switch has a defect that can cause data
corruption when configuring the MCC SI Ram for 2 entries (7 bits forming the 56-kbps channel and 1
bit being discarded).
As a workaround, 3 SI RAM entries would have to be used, but the Catalyst 4224 Access Gateway
Switch does not have enough available space. Therefore, only 64-kbps channels are supported.
If absolutely required, you could implement this feature in slots 1 and 2 using the SCCs and limit it to
two channels or super-channels per slot. This feature requires more design work and will not be
addressed unless really needed.
Customers that need 56 kbps should use the WIC-56K4 WIC.
Survivable Remote Site Telephony Marks Control Packets Differently
The Survivable Remote Site Telephony software feature marks the control traffic as a 10100000 or dscp
of cs5. Non-Survivable Remote Site Telephony IOS software marks it as 01101000.

7
MTP Not Used on Cisco CallManager Unless Transcoding is Required
OL-1798-01
Important Notes
MTP Not Used on Cisco CallManager Unless Transcoding is Required
All H.323 gateways that use IOS 12.0(7) or later support H.323 Version 2. Prior to H.323 Version 2, MTP
was required for H.323 gateways. Ordinarily, the MTP box on Cisco CallManager should not be checked
when defining the Catalyst 4224 as an H.323 gateway. You should check the MTP box on
Cisco CallManager only if transcoding is required at the central site. For example, transcoding would be
required when the Catalyst 4224 uses G.729 for IP WAN calls and the voice mail system at central site
only supports G.711.
With the MTP box checked on Cisco CallManager for the H.323 gateway definition for Catalyst 4224,
a locally connected analog FXS phone call to a local IP phone must traverse the IP WAN because the
call between the analog FXS phone and the IP phone is anchored by the transcoding device at the central
site. This behavior is normal for an IOS H.323 gateway when the MTP box on Cisco CallManager is
checked, but this behavior is obviously not optimal. Therefore, unless transcoding is required, the MTP
box should not be checked on the H.323 gateway definition for Catalyst 4224.
Connecting the Catalyst 4224 as a Gateway Over a Low Speed Serial Link
Use the h323-gateway voip bind srcaddr command to connect the Catalyst 4224 as a gateway over a
low speed serial link.
To configure the Catalyst 4224 as an H.323 gateway, use the following configuration:
interface Loopback1
description h323 gateway address
ip address 10.253.1.1 255.255.255.0
h323-gateway voip bind srcaddr 10.253.1.1
This configuration provides the IP address for the H.323 end point. Use the same address in
Cisco CallManager to configure the H.323 gateway. This address can be attached to a physical interface.
Portfast Command Not Supported for Trunks
If the Catalyst 422410/100 Ethernet ports are configured in trunk mode, the portfast command is not
supported. The workaround is to use the global configuration commands for each VLAN to reduce the
forwarding timers to a minimum value of 4 seconds.
spanning-tree portfast bpduguard
spanning-tree vlan 60 forward-time 4
spanning-tree vlan 160 forward-time 4
Warning If you connect the Catalyst 4224 to another switch, ensure that the timers are the same
on both links. Otherwise, you might experience spanning tree issues.

8
Use the Portfast Command with a Separate VLAN for Voice and Data OL-1798-01
Important Notes
Use the Portfast Command with a Separate VLAN for Voice and Data
To use the portfast command, configure the Catalyst 4224 ports with an access VLAN for data and a
separate VLAN for voice. The following configuration provides an example:
interface FastEthernet5/22
no ip address
duplex auto
speed auto
switchport access vlan 60
switchport voice vlan 160
snmp trap link-status
spanning-tree portfast
Note Trunking should be used only to connect to another switch.
Configuring a Single PVC on Frame Relay with CBWFQ
To configure a single PVC on Frame Relay with CBWFQ until LLQ becomes available, see the following
notes.
Note LLQ is currently disabled.
The Catalyst 4224 currently supports LLQ/CBWFQ only on a PPP or HDLC encapsulated serial link.
The Catalyst 4224 supports LFI on MLPPP links but not LLQ/CBWFQ or ip rtp priority.
LLQ/CBWFQ are not currently supported for Frame Relay. The Service Policy output command is
currently disabled. Therefore, currently only ip rtp priority is supported as a voice priority queuing
scheme. FRF.12 is also supported on Frame Relay links.
The following configuration example is recommended for FRF.12 and ip priority.
Define the map class:
map-class frame-relay VOIP_256
no frame-relay adaptive-shaping
frame-relay cir 250000
frame-relay bc 1000
frame-relay be 0
frame-relay mincir 250000
frame-relay fair-queue
frame-relay fragment 320
frame-relay ip rtp priority 16384 16383 170
Apply the map class to a frame-relay sub interface:
interface Serial0/0.300 point-to-point
ip address 1.1.1.1
frame-relay interface-dlci 300
frame-relay class VOIP_256
Apply frame-relay shaping to the main interface:
interface ser0/0
encapsulation frame-relay
frame-relay traffic-shaping

9
IGMP Snooping Support
OL-1798-01
Important Notes
IGMP Snooping Support
One or more users might need to connect to local/remote server(s) via IP WAN or other LAN connection
to access a MULTICAST application, such as IPTV or WEBCast. The Catalyst 4224 should send the
multicast stream only to the requesting user PC and should not flood the rest of user PCs with such
streams.
IGMP is a multicast protocol that directly affects PCs (hosts). IGMP allows hosts to inform Layer 3
devices (routers) that they want to receive multicast traffic for a specific multicast group address.
Multicast Address Range
The multicast address range includes any IP address in the range 224.0.0.0 to 239.255.255.255. The
range of addresses between 224.0.0.0 and 224.0.0.255 (inclusive) is RESERVED for the use of routing
protocols and other low-level topology discovery or maintenance protocols.
Any multicast server defined in the network will be part of one or more multicast groups.
Whenever a user’s PC (referred to as host) requests the services of a multicast server, for example, it asks
for an application (such as a movie channel), and it will send a message to join the particular group
(join-group) the server uses to multicast (transmit) such movie.
The Catalyst 4224 will send the movie stream only to the hosts that have sent a join request. The
Catalyst 4224 keeps track of the multicast entries via two tables known as Multicast address count and
IGMP snooping count. As in any system, these tables are finite, and specifically in the Catalyst 4224
their max valueis 255. Once this value is reached, further joins (join-group) or VLAN definitions cannot
be executed.
Other IGMP Requirements
In order to enable IGMP within the Catalyst 4224, a multicast protocol such as PIM must be configured
for the corresponding interface(s), which are mainly VLAN interfaces. The user cannot enable IGMP
directly as it is done in other Cisco switches.
TIPS on how to keep track of the multicast tables to prevent them from getting full (based on test
observations),
•For every VLAN added to the system, the multicast address count will increase by 4. (IGMP
snooping address Count does not get impacted by VLAN addition.)
•Whenever a multicast protocol is added (for example, ip pim dense-mode) both counters increase
by 3. (The first instance will increase counters by 4 because Multicast group 224.0.1.40 is added
too.)
•You can add up to 62 VLANs without IGMP support. Any additional VLAN will get added, but cdp
and EIGRP for these VLANs will not work (among other things).
•When a multicast group is added via the join-group command, both counters are increased by 1.
•When you delete a VLAN interface that was multicasting (for example, pim) no counters get
decreased. (A bug report exists for this issue.)
•When you delete a multicast protocol (for example, no ip pim value) from an interface, the counters
get increased by 1.
•When a multicast group leaves (via the no ip igmp join-group ip-address), both counters get properly
decremented by 1. This is the case when a host finishes using the multicast application, like viewing
a movie.

10
IP Phones Running SRST Fail to Get DHCP Reply OL-1798-01
Important Notes
Design
The Catalyst 4224 hardware is designed to support many IGMP groups and VLAN interfaces, as long as
the multicast address count is <= 255 and/or IGMP snooping address count is <= 255.
Note When the table limit is exceeded, no friendly message is displayed.
IP Phones Running SRST Fail to Get DHCP Reply
This section explains what happens when the lease time expires for IP phones running Survivable
Remote Site Telephony (SRST) that are assigned by the DHCP server in a central site.
IP Phones will try to renew the lease, but they will fail to get any DHCP replies due to the WAN failure.
Eventually IP phones will not only lose IP addresses but also lose phone services. Resetting or power
cycling the phones will not clear this situation. IP address and phone services cannot be restored until a
valid DHCP response is received by the IP Phone or the phone's IP address is manually configured
(DHCP is disabled).
When the IP address leased from the DHCP server is not infinite, the DHCP client will start sending
DHCP renew messages to extend the lease before the lease expires. When the lease time expires, IP
phones will start sending DHCP request messages and go to DHCP init state after a certain amount of
time without receiving DHCP replies from the server (this time is configurable). In the case when IP
phones already register with the SRST router in Cisco CallManager fall back mode, renewing the IP
address request will not be replied unless the SRST router itself is a DHCP server or there is a DHCP
server that can be reached. IP phones will lose their IP addresses assigned by the DHCP server in the
central site due to WAN failure, and hence lose the phone services, which cannot be recovered until a
valid DHCP response is received by the IP phone or the phone's IP address is manually configured, thus
disabling the DHCP service.
Note that loosing the lease is not the same as resetting. If the phone resets, it comes up in the
INIT-REBOOT state; this is the state where it has an IP address stored in flash. If it cannot contact the
DHCP server, it will use its stored address and continue to do DHCP Discovers in the background until
the server responds. In the case were the lease expires, the phone clears the IP address stored in flash
and goes to the INIT state. It cannot reinitialize until it gets a response from the DHCP server. This
behavior is as specified in the DHCP protocol RFC 2131.

11
Configuring Fractional T1 PRI ISDN
OL-1798-01
Important Notes
Configuring Fractional T1 PRI ISDN
This release supports fractional T1 PRI ISDN on the following switch types:
•DMS-100
•5ESS
•NI-1
To configure a fractional T1 for PRI ISDN, perform this procedure:
1. Make sure the PRI VIC is configured last (after you configure all the VIC cards that require the DSP
resources).
2. Allocate all 24 timeslots for the PRI group. For example:
controller T1 1/0
framing esf
linecode b8zs
pri-group timeslots 1-24
Note The DSP resources are not sufficient for the 24 timeslots, and you will receive a message
indicating insufficient DSP resources. You need to configure the switch/PBX to make the
timeslots out-of-service. If you do not allocate 24 timeslots, a SERVICE message will not
be sent for the unallocated timeslots.
3. Use the show voice dsp command to check how many channels could be allocated with the available
DSP resources. For example, in one case 16 timeslots could be allocated DSP resources.
4. Busy out the remaining timeslots for which the DSP resources could not be allocated. For example:
isdn service dsl 0 b_channel 17-24 state 2
5. Use the show isdn service to make sure the channel is out-of-service.
c4224#sh isdn ser
PRI Channel Statistics:
ISDN Se1/0:23, Channel [1-24]
Configured Isdn Interface (dsl) 0
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart
5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
Service State (0=Inservice 1=Maint 2=Outofservice)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2
Now for any incoming call, only timeslots 1-16 will be used by the switch or the PBX.

12
Caveats OL-1798-01
Caveats
Caveats
This section lists unresolved caveats for this release of the Cisco Catalyst 4224 Access Gateway Switch.
Caveats describe unexpected behavior or defects in the switch and its related software. For a list of bugs
that have been resolved in this release, see the “Bug Fixes” section on page 3.
Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity
for any release. To reach Bug Navigator II, log in to Cisco.com and click Software Center:
Cisco IOS Software: Bug Toolkit: Bug Navigator II. Another option is to go to
http://www.cisco.com/support/bugtools/.
Open Caveats—Cisco IOS Release 12.1(5)YE2
This section documents possible unexpected behavior by Cisco IOS Release 12.1(5)YE2 and describes
only severity 1 and 2 caveats and select severity 3 caveats.
•CSCdr76149
The Catalyst 4224 Access Gateway Switch supports only two codecs, G711u and G711a. The
default codec appears as G729r8 and needs to be set to G.711 using the CLI.
•CSCds02576
Caller ID is not supported on analog and digital ports (T1CAS and Analog FCS) in this release.
•CSCds18197
The Access Gateway Module does not support fxs-ground-start signalling in the ds0-group
command. See the following example:
Gateway(config-controller)#ds0-group 0 time 1 type ?
e&m-delay-dial E & M Delay Dial
e&m-immediate-start E & M Immediate Start
e&m-wink-start E & M Wink Start
ext-sig External Signaling
fxo-ground-start FXO Ground Start
fxo-loop-start FXO Loop Start
fxs-loop-start FXS Loop Start
•CSCdt16105
The Access Gateway Module supports the following types of layer 2 software compression:
– HDLC
– PPP
– Frame Relay
The Access Gateway Module supports two types of Frame Relay software compression:
– Cisco proprietary encapsulation
– FRF.9 (not working)
FRF.9 is not working at this time.
•CSCdu40116
The IP address table for mib2 is missing. This table is required to do network management on the
Access Gateway Module.

13
Related Documentation
OL-1798-01
Related Documentation
•CSCdv20595
Cannot communicate with Catalyst 4224 via console after configuring stopbits 1.
Workaround: Use the default configuration settings for the console port. Configure your console to
match these settings.
Related Documentation
The following sections describe the documentation available for the Cisco Catalyst 4224 Access
Gateway Switch. These documents consist of hardware and software installation guides, Cisco IOS
configuration guides and command references, system error messages, feature modules, and other
documents.
Documentation is available as printed manuals or electronic documents, except for feature modules,
which are available online on Cisco.com and the Documentation CD-ROM.
Use these release notes with these documents:
•Platform-Specific Documents, page 13
•Cisco IOS Software Documentation Set, page 14.
Platform-Specific Documents
These documents are available for the Cisco Catalyst 4224 Access Gateway Switch on Cisco.com and
the Documentation CD-ROM:
•Catalyst 4003 and 4006 Switch Installation Guide
•Switch Software Documentation, Release 5.5
•Catalyst 4000 Family Release Notes
•Catalyst 4000 Family Installation & Configuration Notes
•Site Preparation and Safety Guide
•Troubleshooting Tips
On Cisco.com at:
Technical Documents: Documentation Home Page: Multilayer LAN Switches: Catalyst 4000
Family Switches: Installation and Configuration Notes
On the Documentation CD-ROM at:
Cisco Product Documentation:Multilayer LAN Switches: Catalyst 4000 Family Switches:
Installation and Configuration Notes

14
Feature Modules OL-1798-01
Related Documentation
Feature Modules
Feature modules describe new features supported by Cisco IOS Release 12.1(5)YE3 and are updates to
the Cisco IOS documentation set. A feature module consists of a brief overview of the features, benefits,
and configuration tasks as well as a command reference. As updates, the feature modules are available
online only. Feature module information is incorporated in the next printing of the Cisco IOS
documentation set.
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.2: New Feature Documentation
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration:Cisco IOS Release 12.2:
New Feature Documentation
Feature Navigator
Feature Navigator is a web-based tool that enables you to quickly determine which Cisco IOS software
images support a particular set of features and which features are supported in a particular Cisco IOS
image.
Feature Navigator is available 24 hours a day, 7 days a week. To access Feature Navigator, you must have
an account on Cisco.com. If you have forgotten or lost your account information, e-mail the Contact
Database Administration group at [email protected]. If you do not have an account on Cisco.com,
go to http://www.cisco.com/register and follow the directions to establish an account.
To use Feature Navigator, you must have a JavaScript-enabled web browser such as Netscape 3.0 or later,
or Internet Explorer 4.0 or later. Internet Explorer 4.0 always has JavaScript enabled. To enable
JavaScript for Netscape 3.x or Netscape 4.x, follow the instructions provided with the web browser. For
JavaScript support and enabling instructions for other browsers, check with the browser vendor.
Feature Navigator is updated when major Cisco IOS software releases and technology releases occur.
You can access Feature Navigator at the following URL:
http://www.cisco.com/go/fn
Cisco IOS Software Documentation Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS
command references, and several other supporting documents. The Cisco IOS software documentation
set is shipped with your order in electronic form on the Documentation CD-ROM, unless you
specifically ordered the printed versions.

15
Cisco IOS Software Documentation Set
OL-1798-01
Related Documentation
Documentation Modules
Each module in the Cisco IOS documentation set consists of one or more configuration guides and one
or more corresponding command references. Chapters in a configuration guide describe protocols,
configuration tasks, and Cisco IOS software functionality, and contain comprehensive configuration
examples. Chapters in a command reference provide complete command syntax information. Use each
configuration guide with its corresponding command reference.
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.2: Configuration Guides and Command References
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2:
Configuration Guides and Command References
Cisco IOS Release 12.2 Documentation Set Contents
Table 2 lists the contents of the Cisco IOS Release 12.0 software documentation set, Table 3 lists the
contents of the Cisco IOS Release 12.1 software documentation set, and Table 4 lists the contents of the
Cisco IOS Release 12.2 software documentation set. These documents are available in electronic form
and in printed form if ordered.
Note You can find the most current Cisco IOS documentation on Cisco.com and the Documentation
CD-ROM. These electronic documents may contain updates and modifications made after the
hard-copy documents were printed.
On Cisco.com at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.2
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2
Table 2 Cisco IOS Release 12.0 Documentation Set
Books Major Topics
•Configuration Fundamentals Configuration Guide
•Configuration Fundamentals Command Reference
Configuration Fundamentals Overview
Cisco IOS User Interfaces
File Management
System Management
•Bridging and IBM Networking Configuration Guide
•Bridging and IBM Networking Command Reference
Bridging and IBM Networking Overview
Bridging
IBM Networking

16
Cisco IOS Software Documentation Set OL-1798-01
Related Documentation
•Dial Solutions Configuration Guide Overview of Interfaces, Controllers, and Lines Used for
Dial Access
Configuring Modem Support and Other Asynchronous
Devices
Managing Modems
Configuring Terminal Operating Characteristics for
Dial-In Sessions
Setting Up ISDN Basic Rate Service
Configuring Synchronous Serial Ports
Configuring Channelized E1 and T1
Configuring ISDN Special Signaling
Configuring X.25 on ISDN Using A0/D1
Configuring AppleTalk Remote Access
Preparing for Asynchronous DDR
Configuring Asynchronous PP and SLIP
Configuring the Bandwidth Allocation Control Protocol
Configuring PPP Callback for DDR
Configuring ISDN Caller ID Callback
Configuring Dial Backup for Dialer Profiles
Configuring Dial Backup Using Dialer Watch
Configuring Dial Backup for Serial LInes
Configuring Peer-to-Peer DDR with Dialer Profiles
Configuring DialOut
Enterprise Dial Scenarios and Configurations
Configuring Easy IP
Deciding and Preparing to Configure DDR
Configuring Legacy DDR Hubs
Configuring Multichassis Multilink PPP
Configuring Support For NASI Clients to Access
Network
Resources
Dial Networking Business Applications
Configuring the Cisco PAD
Per-User Configuration
Configuring Media-Independent PPP and Multilink PPP
Configuring Protocol Translation and Virtual
Asynchronous Devices
Establishing a Reverse Telenet Session to a Modem
Configuring Snapshot Routing
Telco and ISP Dial Scenarios and Configurations
Configuring Legacy DDR Spokes
Configuring Dial-In Terminal Services
Configuring V.120 Access
Configuring Virtual Private Dialup Networks
Configuring Virtual Profiles
Configuring Virtual Template Interfaces
Configuring X.25 on ISDN
Table 2 Cisco IOS Release 12.0 Documentation Set (continued)
Books Major Topics

17
Cisco IOS Software Documentation Set
OL-1798-01
Related Documentation
•Dial Solutions Command Reference Dial-In Port Setup
Dial-In Terminal Service and Remote Node
Configuration
Dial-on-Demand Routing
Dial Backup
Dial-Out Modem Pooling
Large-Scale Dial Solutions
Cost-Control Solutions
Virtual Private Dialup Networks
Other Network Traffic on ISDN Channels
Dial-Related Addressing Services
•Cisco IOS Interface Configuration Guide
•Cisco IOS Interface Command Reference
Interface Configuration Overview
LAN Interfaces
Serial Interfaces
Logical Interfaces
•Network Protocols Configuration Guide, Part 1
•Network Protocols Command Reference, Part 1
IP Overview
IP Addressing and Services
IP Routing Protocols
•Network Protocols Configuration Guide, Part 2
•Network Protocols Command Reference, Part 2
AppleTalk and Novell IPX Overview
AppleTalk
Novell IPX
•Network Protocols Configuration Guide, Part 3
•Network Protocols Command Reference, Part 3
Network Protocols Overview
Apollo Domain
Banyan VINES
DECnet
ISO CLNS
XNS
•Security Configuration Guide
•Security Command Reference
Security Overview
Authentication, Authorization, and Accounting (AAA)
Security Server Protocols
Traffic Filtering and Firewalls
IP Security and Encryption
Other Security Features
•Cisco IOS Switching Services Configuration Guide
•Cisco IOS Switching Services Command Reference
Cisco IOS Switching Services Overview
Cisco IOS Switching Paths
Cisco Express Forwarding
NewFlow Switching
Tag Switching
Multilayer Switching
Multicast Distributed Switching
Virtual LANs
MPOA Commands
•Wide-Area Networking Configuration Guide
•Wide-Area Networking Command Reference
Wide-Area Network Overview
ATM
Frame Relay
SMDS
X.25 and LAPB
Table 2 Cisco IOS Release 12.0 Documentation Set (continued)
Books Major Topics

18
Cisco IOS Software Documentation Set OL-1798-01
Related Documentation
•Voice, Video, and Home Applications Configuration Guide
•Voice, Video, and Home Applications Command Reference
Using Voice, Video, and Home Applications
Voice
Video
Broadband
•Quality of Service Solutions Configuration Guide
•Quality of Service Solutions Command Reference
Quality of Service Overview
Classification
Congestion Management
Congestion Avoidance
Policy and Shaping Overview
Signaling
Link Efficiency Mechanisms
•Caveats (Caveat documentation for Cisco IOS Releases 12.0
and 12.0 T—includes open and resolved severity 1 and 2
caveats for all platforms)
•Cisco IOS Release 12.0 Configuration Guide Master Index
•Cisco IOS Release 12.0 Command Reference Master Index
•Cisco IOS Release 12.0 Master Indexes
•Cisco IOS Software Command Summary
•Cisco IOS Software System Error Messages
•Debug Command Reference
•Dial Solutions Quick Configuration Guide
•New Features in 12.0-Based Limited Lifetime Releases
•New Features in Early Deployment Release 12.0T
•Release Notes (Release notes for 12.0-based releases and
various platforms)
Table 2 Cisco IOS Release 12.0 Documentation Set (continued)
Books Major Topics

19
Cisco IOS Software Documentation Set
OL-1798-01
Related Documentation
Table 3 Cisco IOS Release 12.1 Documentation Set
Books Major Topics
•Cisco IOS Configuration Fundamentals Configuration Guide
•Cisco IOS Configuration Fundamentals Command Reference
Configuration Fundamentals Overview
Cisco IOS User Interfaces
Cisco IOS File Management
Cisco IOS System Management
Cisco IOS User Interfaces Commands
Cisco IOS File Management Commands
Cisco IOS System Management Commands
•Cisco IOS Bridging and IBM Networking Configuration
Guide
•Cisco IOS Bridging and IBM Networking Command
Reference, Volume I
•Cisco IOS Bridging and IBM Networking Command
Reference, Volume II
Using Cisco IOS Software
Overview of SNA Internetworking
Bridging
IBM Networking
•Cisco IOS Dial Services Configuration Guide: Terminal
Services
•Cisco IOS Dial Services Configuration Guide: Network
Services
•Cisco IOS Dial Services Command Reference
Preparing for Dial Access
Modem Configuration and Management
ISDN and Signaling Configuration
PPP Configuration
Dial-on-Demand Routing Configuration
Dial-Backup Configuration
Terminal Service Configuration
Large-Scale Dial Solutions
Cost-Control Solutions
Virtual Private Networks
X.25 on ISDN Solutions
Telco Solutions
Dial-Related Addressing Services
Interworking Dial Access Scenarios
•Cisco IOS Interface Configuration Guide
•Cisco IOS Interface Command Reference
Interface Configuration Overview
Configuring LAN Interfaces
Configuring Serial Interfaces
Configuring Logical Interfaces
•Cisco IOS IP and IP Routing Configuration Guide
•Cisco IOS IP and IP Routing Command Reference
IP Addressing and Services
IP Routing Protocols
IP Multicast
•Cisco IOS AppleTalk and Novell IPX Configuration Guide
•Cisco IOS AppleTalk and Novell IPX Command Reference
AppleTalk and Novell IPX Overview
Configuring AppleTalk
Configuring Novell IPX
•Cisco IOS Apollo Domain, Banyan VINES, DECnet,
ISO CLNS, and XNS Configuration Guide
•Cisco IOS Apollo Domain, Banyan VINES, DECnet,
ISO CLNS, and XNS Command Reference
Apollo Domain, Banyan VINES, DECnet, ISO CLNS,
and XNS Overview
Configuring Apollo Domain
Configuring Banyan VINES
Configuring DECnet
Configuring ISO CLNS
Configuring XNS

20
Cisco IOS Software Documentation Set OL-1798-01
Related Documentation
•Cisco IOS Multiservice Applications Configuration Guide
•Cisco IOS Multiservice Applications Command Reference
Multiservice Applications Overview
Voice
Video
Broadband
•Cisco IOS Quality of Service Solutions Configuration Guide
•Cisco IOS Quality of Service Solutions Command Reference
Quality of Service Overview
Classification
Congestion Management
Congestion Avoidance
Policing and Shaping
Signaling
Link Efficiency Mechanisms
Quality of Service Solutions
•Cisco IOS Security Configuration Guide
•Cisco IOS Security Command Reference
Security Overview
Authentication, Authorization, and Accounting (AAA)
Security Server Protocols
Traffic Filtering and Firewalls
IP Security and Encryption
Other Security Features
•Cisco IOS Switching Services Configuration Guide
•Cisco IOS Switching Services Command Reference
Cisco IOS Switching Services Overview
Cisco IOS Switching Paths
Cisco Express Forwarding
NetFlow Switching
Multiprotocol Label Switching
Multilayer Switching
Multicast Distributed Switching
Virtual LANs
LAN Emulation
•Cisco IOS Wide-Area Networking Configuration Guide
•Cisco IOS Wide-Area Networking Command Reference
Wide-Area Networking Overview
Configuring ATM
Configuring Frame Relay
Configuring Frame Relay-ATM Interworking
Configuring SMDS
Configuring X.25 and LAPB
•Cisco IOS Configuration Guide Master Index
•Cisco IOS Command Reference Master Index
•Cisco IOS Debug Command Reference
•Cisco IOS Dial Services Quick Configuration Guide
•Cisco IOS Software System Error Messages
•New Features in 12.1-Based Limited Lifetime Releases
•New Features in Release 12.1 T
•Release Notes (Release note and caveat documentation for
12.1-based releases and various platforms)
Table 3 Cisco IOS Release 12.1 Documentation Set (continued)
Books Major Topics