[c-nsp] BGP sessions won't establish.

[Ian MacKinnon]

ebgp multihop?
Can you see the ttl in the traces?


Roy wrote:
> Hi,
>
> We are working with a new ISP for service. This one is via metro
> ethernet. They require two BGP sessions. One goes between the ends of
> the ethernet. The other BGP session is between a loopback interface on
> our router and a loopback interface on one of the ISP's other routers.
>
> The first session comes up just fine but the second one using loopback
> interfaces will not establish. I did some packet traces using a Linux
> box and tcpdump and it would seem that the packets from our loopback
> session go into the metro ethernet and disappear. When their router
> tries to connect, the packets arrive and responses are sent but they too
> seem to be ignored.
>
> The ISP blames us of course. I told them the packets seem to be going
> out the switch port to the metro ethernet.
> Has anyone seem such a problem? Is there some strange magic limit to the
> number of peers or something?
>
> Roy
>
>
>
>
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