[nsp] Cat3500XL & management VLAN: Encapsulation of IP packets fails

[Matti Saarinen]

"Vincent De Keyzer" <vincent at dekeyzer.net> writes:

>> sw#ping x.y.z.65
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to x.y.z.65, timeout is 2 seconds:
>> 
>> 32w1d: IP: s=x.y.z.80 (local), d=x.y.z.65 (VLANn), len 100, sending
>> 32w1d: IP ARP: creating incomplete entry for IP address: 
>> x.y.z.65 interface VLANn
>> 32w1d: IP ARP: sent req src x.y.z.80 0002.fd1a.a240,
>>                  dst x.y.z.65 0000.0000.0000 VLANn
>> 32w1d: IP: s=x.y.z.80 (local), d=x.y.z.65 (VLANn), len 100, 
>> encapsulation failed.
>
> It seems that ARP is failing? No replies are received.

     Yes, is seems to be so. Although, I assume that the arp requests
     never reach their target.

> Does the address .65 appear in your arp cache? (I guess not) Is .65
> still up?
     
     Yes, it's up. It's the default router fot the subnet. There are
     other switches in the same VLAN and subnet and they are
     reachable. On one of them is even reachable through the switch
     having the problems.

> I am polling a switch with MRTG and it never produced any problems.
> I don't think that Cricket is much nastier than MRTG?

     Well, Cricket may be a bit nastier. It tries to resolve the OIDs
     for the interfaces by walking through the interface MIB tree.

     Thanks,

-- 
- Matti -