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New Member

Please help with IOS 15 changed commands

Hi, we've got a pair of old 3745's that are getting upgraded to new  2911's, and I'm trying to run IOS 15.2 on the new routers to get them most current before going into test and production use.

The routers are doing BGP, IPv4, and HSRP, and I'm trying to put one in  at a time as to not have to big bang everything at once.  I'm putting  the one that matters least in first, and basically using the same config  as the old one, which was running IOS 11. Almost everything translated  pretty easily to version 15, except for the following:

I was using "no ip mroute-cache" on ethernet interfaces, and it says  that command is deprecated and I should use the MFIB commands instead.  Darn if I know what that means, I believe it was set up so the ethernet  interfaces had IP multicast fast switching disabled, which was set up by  our vendor 10 years ago so I'm not sure if it matters. It would seem  logical to me this would have an impact on HSRP and speed of failover.   Does this matter, and if so how in the world do I do this with IOS 15.2?

The second one is the use of "no fair-queue" on our serial connection  for a T1.  This command isn't there either, and I'm not sure if I even  need to bother on this. It was set up on the old router on a T1 Frame  Relay circuit.

Any insight would be appreciated--other than these two command  everything seems to go fine on the new router. I want to make sure I  have everything researched before putting it into production.  Thanks!

- Steve

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Hall of Fame Super Bronze

Please help with IOS 15 changed commands

The referring MFIB command is documented here:

http://www.cisco.com/en/US/docs/ios/ipmulti/command/reference/imc_03.html#wp1066523

Personal recommendation is not to use the MFIB if you are running multicast and if you don't have PIM on the interface, the mroute-cache command should be left alone (enabled).

The fair-queue command has been moved to the policy-map, please refer to the documentation:

http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/legacy_qos_cli_deprecation.html

You can leave your serial connection as is or configure a policy-map to apply the desired queueing method.

Regards,

Edison

2 REPLIES
Hall of Fame Super Bronze

Please help with IOS 15 changed commands

The referring MFIB command is documented here:

http://www.cisco.com/en/US/docs/ios/ipmulti/command/reference/imc_03.html#wp1066523

Personal recommendation is not to use the MFIB if you are running multicast and if you don't have PIM on the interface, the mroute-cache command should be left alone (enabled).

The fair-queue command has been moved to the policy-map, please refer to the documentation:

http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/legacy_qos_cli_deprecation.html

You can leave your serial connection as is or configure a policy-map to apply the desired queueing method.

Regards,

Edison

New Member

Please help with IOS 15 changed commands

Thanks Edison.  I will review what you have here.  I appreciate the response.

- Steve

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