[c-nsp] ip multicast rate-limit

Hank Nussbacher hank at efes.iucc.ac.il
Tue Mar 28 15:35:15 EST 2006


On Tue, 28 Mar 2006, Tim Stevenson wrote:

> >Couldn't Cisco put all multicast limiters in one spot in the CLI?
>
> This is my job security... :\  But seriously, I am not sure I agree
> that all RLs of any kind should drop under one CLI chain. Here we are
> talking about IGMP software state, hardware rate limiters, and
> control plane RLing. Shouldn't these fall into their appropriate chains?

Didn't want to mix my reply since this is a totally different thread.

My answer is no.  The end user is not someone who may know or care to know
what processor, hardware, software, firmware, vaporware, SUP,
RSP, SP/RP, is running.  That level changes every 2-4 years - both for
Cisco and for the end user.  What Cisco should be doing is "shielding" the
user from having to know the intricate details of those hardware changes,
and allowing the network manager to manage their network via standardized
rate limiters for multicast, igmp, etc.  As I change my hardware or even
my IOS version, the CLI commands should remain the same and Cisco should
be translating those CLI commands internally to something that the
hardware understands.  That is not to say to not add new commands but the
CLI tree should be properly *thought* out from the start and not changed
every 2-3 years as some new hardware platform becomes available.

-Hank


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