Hi everyone,
I have a strange issue.
I have 2 external BGP routers. They both have 2 uplinks to my transit
providers and this works fine.
Until a while ago, when I wanted to take one router out for maintenance,
I would shut it's transit links, remove "default-information originate
always" from OSPF, set higher costs on the uplink and / or set
"max-metric router-lsa administrative" wait for most of the traffic to
shift to the second router and do my maintenance.
Because the router would always have an iBGP link to the second router
it would receive all routes from this router and be fine in the case of
some traffic coming in anyway. But today I wanted to upgrade Quagga to
version 1.10 and I saw something really strange:
bgp02.as48972.net# sh ip bgp sum
BGP router identifier 95.130.232.3, local AS number 48972
RIB entries 1120940, using 120 MiB of memory
Peers 29, using 129 KiB of memory
Peer groups 3, using 96 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/P
fxRcd
77.222.66.177 4 16243 1434500 11053 0 0 0 01w0d16h 609362
78.152.49.109 4 5580 3162545 66219 0 0 0 01w0d16h 609733
95.130.232.2 4 48972 0 0 0 0 0 never Idle
(Admin)
95.130.232.4 4 48972 10983 58016 0 0 0 02:28:03 0
95.130.232.6 4 48972 2536718 65789 0 0 0 02:21:53 137022
193.108.98.2 4 20828 208151 11056 0 0 0 2d09h49m 137235
193.108.98.3 4 20828 204274 11056 0 0 0 2d09h39m 137227
bgp03.as48972.net(config-router)# do sh ip bgp sum
BGP router identifier 95.130.232.6, local AS number 48972
RIB entries 311015, using 33 MiB of memory
Peers 21, using 94 KiB of memory
Peer groups 3, using 96 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/P
fxRcd
77.222.66.181 4 16243 298044 882 0 0 0 00:01:21 Idle
(Admin)
78.152.40.92 4 5580 559289 5234 0 0 0 00:01:14 Idle
(Admin)
95.130.232.2 4 48972 0 0 0 0 0 never Idle
(Admin)
95.130.232.3 4 48972 7643 867546 0 0 0 02:21:10 39002
95.130.232.4 4 48972 837 558695 0 0 0 02:27:21 0
193.108.98.2 4 20828 68276 883 0 0 0 03:30:44 137235
193.108.98.3 4 20828 64031 883 0 0 0 03:30:35 137227
I would expect that the BGP03 would get at least 580.000 routes from the
BGP02, but this doesn't happen for some strange reason.
Also resetting the iBGP link between the BGP02 and BGP03 does not fix
the problem.
Anyone any idea?
jan Hugo Prins
_______________________________________________
Quagga-users mailing list
Quagga-users@lists.quagga.net
https://lists.quagga.net/mailman/listinfo/quagga-users
I have a strange issue.
I have 2 external BGP routers. They both have 2 uplinks to my transit
providers and this works fine.
Until a while ago, when I wanted to take one router out for maintenance,
I would shut it's transit links, remove "default-information originate
always" from OSPF, set higher costs on the uplink and / or set
"max-metric router-lsa administrative" wait for most of the traffic to
shift to the second router and do my maintenance.
Because the router would always have an iBGP link to the second router
it would receive all routes from this router and be fine in the case of
some traffic coming in anyway. But today I wanted to upgrade Quagga to
version 1.10 and I saw something really strange:
bgp02.as48972.net# sh ip bgp sum
BGP router identifier 95.130.232.3, local AS number 48972
RIB entries 1120940, using 120 MiB of memory
Peers 29, using 129 KiB of memory
Peer groups 3, using 96 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/P
fxRcd
77.222.66.177 4 16243 1434500 11053 0 0 0 01w0d16h 609362
78.152.49.109 4 5580 3162545 66219 0 0 0 01w0d16h 609733
95.130.232.2 4 48972 0 0 0 0 0 never Idle
(Admin)
95.130.232.4 4 48972 10983 58016 0 0 0 02:28:03 0
95.130.232.6 4 48972 2536718 65789 0 0 0 02:21:53 137022
193.108.98.2 4 20828 208151 11056 0 0 0 2d09h49m 137235
193.108.98.3 4 20828 204274 11056 0 0 0 2d09h39m 137227
bgp03.as48972.net(config-router)# do sh ip bgp sum
BGP router identifier 95.130.232.6, local AS number 48972
RIB entries 311015, using 33 MiB of memory
Peers 21, using 94 KiB of memory
Peer groups 3, using 96 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/P
fxRcd
77.222.66.181 4 16243 298044 882 0 0 0 00:01:21 Idle
(Admin)
78.152.40.92 4 5580 559289 5234 0 0 0 00:01:14 Idle
(Admin)
95.130.232.2 4 48972 0 0 0 0 0 never Idle
(Admin)
95.130.232.3 4 48972 7643 867546 0 0 0 02:21:10 39002
95.130.232.4 4 48972 837 558695 0 0 0 02:27:21 0
193.108.98.2 4 20828 68276 883 0 0 0 03:30:44 137235
193.108.98.3 4 20828 64031 883 0 0 0 03:30:35 137227
I would expect that the BGP03 would get at least 580.000 routes from the
BGP02, but this doesn't happen for some strange reason.
Also resetting the iBGP link between the BGP02 and BGP03 does not fix
the problem.
Anyone any idea?
jan Hugo Prins
_______________________________________________
Quagga-users mailing list
Quagga-users@lists.quagga.net
https://lists.quagga.net/mailman/listinfo/quagga-users