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Today's Topics:
1. Re: netdisco help with a flooding problem (Michael Butash)
--- Begin Message ---
Bit off-topic, but sounds like pretty classic unicast flooding issues where
arp/mac tables fall out of sync and flood bum traffic.
Particularly with vxlan/evpn and usually as a whole for a while now, I set
arp to timeout of 240 seconds, mac table timeouts to 360, and that tends to
keep things sane with regular updates. Default timeouts have been an issue
for 20 years with big core/dist/access networks.
Might be better off using rancid to pull the mac/arp tables to compare with
a script... Don't think it'd be easy to add to ND.
-mb
On Wed, Mar 18, 2020 at 9:03 AM Eric W. Bates <[email protected]> wrote:
> Our netdisco tracks 132 devices and one of them is flooding our
> management network.
>
> I'm thinking that whichever switch is unhappy has an empty forwarding
> table for that VLAN? And since netdisco knows the contents of the
> switches' forwarding tables, is there a way to search out the one with
> an empty table?
>
> Thanks for your time.
> Netdisco is one of our essentials.
>
> --
> Clark 159a, MS 46
> 508/289-3112
>
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--- End Message ---
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