02-20-2007 12:30 AM - edited 03-03-2019 03:49 PM
Hi all, Hope every is well :)
In the output below, the ip address (y.y.y.y) in brackets? What is this? It is not the BGP next hop for my external peer that I peer with so I am assuming it is an IP address from where the external peer received the prefix from? Either that or the external peers BGP RID?
router>sh ip bgp 1.1.1.0
BGP routing table entry for 1.1.1.0/24, version 477158
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to peer-groups:
x.x.x.x
100 200
x.x.x.x from x.x.x.x (y.y.y.y)
Origin incomplete, localpref 100, valid, external, best
Community: xxxxx:xxxxx
Can anyone please clarify and tell me two things :-
1. Where can I find documentation on this output (I mean in the detailed format "show ip bgp <network>"
2. There must be a field in the BGP update packet to carry this address to my BGP table. What is it?
Many thx indeed for your help,
Ken
Solved! Go to Solution.
02-20-2007 01:32 AM
Good morning!
Grab a coffee and read slowly ;-)
Yes, exactly, the BGP RID of the peer.
Regards, Martin
02-20-2007 12:48 AM
Hi,
there are 3 IP addresses, which have the following meaning:
The latter is usually a loopback IP on the neighboring BGP peer. All 3 IPs can be the same or different depending on the setup.
With eBGP usually IPs 1 and 2 are identical and IP no. 3 is different, as peering in eBGP is normally not using Loopbacks.
Hope this helps!
Regards, Martin
02-20-2007 12:59 AM
Hi Martin, Many thx for the speed of the response.
Sorry to ask, but I was just a little confused, so the address in the brackets (y.y.y.y), are you saying this is a BGP RID of the external peer?
Sorry, I have not woken up here in London yet :)
Many thx indeed,
Ken
02-20-2007 01:32 AM
Good morning!
Grab a coffee and read slowly ;-)
Yes, exactly, the BGP RID of the peer.
Regards, Martin
02-20-2007 01:36 AM
thx fella.
Got the coffee. would prefer beer!
Kind regards,
Ken
02-20-2007 02:49 AM
Don?t drink and BGP! ;-)
02-20-2007 03:03 AM
:)
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