[c-nsp] BGP causing dropped packets

[Bruce Pinsky]

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Pete Templin wrote:
> Tim Devries wrote:
> 
> 
>>The customer setup also involves another 2621 connected to another 5505, but
>>there is no issue there so I will leave the diagram as above for brevity.
>>My problem is that when I shut the eBGP session down on either end, I am
>>able to ping the directly attached router without any packet loss.  As soon
>>as the BGP session is established massive packet loss occurs on that link.
>>I try and ping the directly connected upstream neighbor and I see packets
>>being dropped all over the place.  Not so when I turn off BGP on either side
>>though.
> 
> 
> Duplex mismatch perhaps?  Mismatch isn't triggered until BGP wants to 
> route more than 200-500kbps over the link?
> 
> What do you see in "sh int" on both sides?
> 

Tend to agree here.  The hard set values on the FE of the 2621 are the clue
that it could be a problem if the port on the 5500 is set to autonegotiate.


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bep

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