RE: Statistics and SMDS

From: Martin, Christian (cmartin@gnilink.net)
Date: Wed Dec 27 2000 - 21:11:09 EST


> Greetings,
>
> I have a site that would like to conduct some traffic
> analysis over their
> SMDS WAN to the Internet. Their current egress point is a
> single DS3 on a
> 75xx. Last time I checked, NetFlow doesn't work on SMDS interfaces.

Netflow is supported on SMDS. CEF is not, however. *sigh*

> I don't like the two-layer hierarchy, but this is what we're
> dealing with...
>
> The WAN is structed such that each remote site is a member of
> 1 of 18 SMDS
> multicast groups. Both the main data center router and the
> Internet router
> have a single DS3 with 18 sub-interfaces so these "core"
> routers are members
> of each multicast group. As a final note, each SMDS group
> consists of 10-30
> remote sites.

I am assuming you are using multipoint subinterfaces. If so, you cannot get
SNMP stats from them - in fact, they aren't returned on SMDS interfaces, and
never will be. You can us a combination of Netflow and MRTG to get general
stats on the HSSI interface, and the T1s at the remote sites (are you suing
T1s remotely?). Other than that, there isn't much you can do.

Regards,
chris



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