ARP problem between Cisco and "old" HP 445

Stefano Lassi — Tue, 14 Oct 2003 09:49:47 GMT

Hi

I'm experiencing following strange problem:

I would like configure an old HP 27286A 445 Router between a Token Ring and an Ethernet networks.
On TR network there are 2 Cisco 2500 router being uplinks with main backbone network.
I can't see Cisco router configuration, not being managed by me, but I know they are configured in HSRP with also a secondary
address.

HP 445 is configured with last released firmware revision.

In laboratory routing trough HP 445 worked fine, but when I put HP 445 on token network and we start flowing traffic trough

Cisco default gateway we got reachability of Cisco router down (HSRP starts failovering) and on HP router log:

I 09/12/03 18:18:29 ip: 'Invalid ARP Source: 10.140.229.1 on 172.16.99.92'
I 09/12/03 18:18:31 ip: 'Invalid ARP Source: 10.140.229.1 on 172.16.99.92'
I 09/12/03 18:18:31 ip: 'Invalid ARP Source: 10.140.229.1 on 172.16.99.92'
I 09/12/03 18:18:31 ip: 'Invalid ARP Source: 10.140.229.1 on 172.16.99.92'
P 09/12/03 18:18:44 dls.token1: 'Token cable connection fault'

Please note that last event correspond I'm dettaching HP token cable to stop disturb normal network functionality.

Note also 10.140.229.1 is secondary address on Cisco not primary (that was configured like def gateway on HP).

I substiteud HP router with a Linux PC with 2 NIC (TR and Eth) and problem did not arise, and all worked well.

Somebody has got any ideas (excluding of course to leave Linux in production and trow away HP 445 ... too easy ...)

Thank you very much

Stefano

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ARP problem between Cisco and "old" HP 445