02-02-2011 08:40 AM - edited 03-06-2019 03:19 PM
I just configured SSM mapping on a test network and noticed something interesting: A 7200 series router using IOS 12.4(25d) includes support for using a Named ACL with the "ip igmp ssm-map static" command, as such:
R1#show version | i 12.4
Cisco IOS Software, 7200 Software (C7200-A3JK9S-M), Version 12.4(25d), RELEASE SOFTWARE (fc1)
BOOTLDR: 7200 Software (C7200-A3JK9S-M), Version 12.4(25d), RELEASE SOFTWARE (fc1)
R1(config)#ip igmp ssm-map static ?
<1-99> SSM group access list number
WORD SSM group named access list
However, a 2691 router using the same version of IOS does not include this support.
R2#show version | i 12.4
Cisco IOS Software, 2600 Software (C2691-ADVENTERPRISEK9-M), Version 12.4(25d), RELEASE SOFTWARE (fc1)
ROM: 2600 Software (C2691-ADVENTERPRISEK9-M), Version 12.4(25d), RELEASE SOFTWARE (fc1)
R2(config)#ip igmp ssm-map static ?
<1-99> SSM group access list number
Does anyone know on which platform this support is introduced?
02-02-2011 01:07 PM
To enable static Source Specific Multicast (SSM) mappings, use the ip igmp ssm-map static command in global configuration mode. To disable a static SSM mapping, use the no form of this command.
ip igmp ssm-map [vrf vrf-name] static access-list source-address
no ip igmp ssm-map [vrf vrf-name] static access-list source-address
No static SSM mappings are configured.
Global configuration (config)
Regards,
Karthic.R.S
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02-02-2011 01:11 PM
Thank you for taking time to reply, but unfortunately that does not answer my question.
I did more testing and found that using a named ACL with the "ip igmp ssm-map static" command is supported on a 3660 router and a 7204 router, but not on a 2651XM, a 2691, a 3825 or a 3845.
I would greatly prefer to use a named ACL for the SSM mapping configuration, but I can't figure out any rhyme or reason as to why a router may or may not support it.
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