RE: [Isis-wg] IS-IS MIB and multiple protocol instances.

All,

Being a user of SNMP contexts and also being a protocols tester,
while having the index in the tables is nice, as Chris points out,
it is not required.  Not only does OSPF use contexts for multiple
instances, but so do BGP, RIP, etc.  In fact some vendors support
many of the standard IP MIB tables in this manner as well.

I haven't yet spoken with Jeff on this issue but if it helps to
move the MIB forward by removing these extra indices, then I would
tend to favor making this change.

Take care,
Don

==============================================
The current IS-IS MIB supports multiple protocol instances on a router
by adding an index to every table in the MIB. This seems messy to me.
The OSPF MIB deals with multiple instances by using a feature of SNMPv3
(contexts). This seems like a very nice solution to me.

I think its very important to also consider how many people actually
use multiple IS-IS protocol instances on a single router when we make
our decision. I'd prefer to not complicate the MIB as it currently is
if we don't have to. Given that many more people use multiple OSPF
instances I suspect this will put pressure on the context solution
being deployed and thus quite usable for us.

In any case I don't want to spend a large amount of time on this issue.
It is my hope that we can get the MIB to last call by or before the
next IETF meeting.

Chris.

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