[c-nsp] bgp vpnv4 routes not arriving in one direction
Aaron
aaron1 at gvtc.com
Tue Feb 17 08:37:10 EST 2015
I have 2 routers here that seem to have good mp-bgp neighboring, one IOS,
and the other IOS XRv. I config'd both to be a route reflector cluster.
They are both advertising routes to each other but for some reason, R5 isn't
rcv'ing the routes from R2-xr
Shown below you will see the R2-xr is sending the routes, but I don't see
them come into R5. I show some debugs from R5 to help determine why.
RP/0/0/CPU0:R2-xr#sh run router bgp
router bgp 65535
bgp router-id 10.0.0.2
bgp cluster-id 1
.
R5#sh run | sec router bgp
router bgp 65535
bgp router-id 10.0.0.5
no bgp default ipv4-unicast
bgp cluster-id 1
..
RP/0/0/CPU0:R2-xr#sh bgp vpnv4 unicast neighbors 10.0.0.5 | in ntern
Tue Feb 17 07:28:54.746 UTC
Remote AS 65535, local AS 65535, internal link
Precedence: internet
R5#sh bgp vpnv4 unicast all neighbors 10.0.0.2 | in ntern
BGP neighbor is 10.0.0.2, remote AS 65535, internal link
RP/0/0/CPU0:R2-xr#sh bgp vpnv4 unicast advertised neighbor 10.0.0.5 summary
Tue Feb 17 07:20:59.318 UTC
Network Next Hop From AS Path
Route Distinguisher: 10.0.0.1:1
192.168.1.0/24 10.0.0.1 10.0.0.1 ?
192.168.4.0/30 10.0.0.1 10.0.0.1 ?
Route Distinguisher: 10.0.0.3:1
192.168.7.0/30 10.0.0.3 10.0.0.3 ?
Route Distinguisher: 10.0.0.4:1
192.168.2.0/24 10.0.0.4 10.0.0.4 ?
Route Distinguisher: 10.0.0.6:1
192.168.6.0/30 10.0.0.6 10.0.0.6 i
Route Distinguisher: 10.0.0.7:1
192.168.3.0/24 10.0.0.7 10.0.0.7 ?
Route Distinguisher: 10.0.0.8:1
0.0.0.0/0 10.0.0.8 10.0.0.8 174i
38.128.1.0/24 10.0.0.8 10.0.0.8 ?
192.168.0.0/16 10.0.0.8 10.0.0.8 i
192.168.5.0/30 10.0.0.8 10.0.0.8 ?
Processed 10 prefixes, 10 paths
RP/0/0/CPU0:R2-xr#sh bgp vpnv4 unicast summary | in "Neighbor|10.0.0.5"
Tue Feb 17 07:20:27.380 UTC
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
St/PfxRcd
10.0.0.5 0 65535 53 46 16 0 0 00:35:47
3
R5#sh bgp vpnv4 unicast al summary | in Neigh|10.0.0.2
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
10.0.0.2 4 65535 46 54 35 0 0 00:36:13 0
R5#sh bgp vpnv4 unicast rd 10.0.0.2:1
(nothing here)
R5#show debugging
IP routing:
BGP updates debugging is on for address family: VPNv4 Unicast
Tag VPN:
Tag VPN debugging is on
*Feb 17 07:33:15.991: %BGP-3-NOTIFICATION: received from neighbor 10.0.0.2
6/2 (cease) 0 bytes
*Feb 17 07:33:15.995: %BGP-5-ADJCHANGE: neighbor 10.0.0.2 Down BGP
Notification received
R5#
R5#
R5#sh bgp vpnv4 unicast rd 10.0.0.2:1
R5#sh bgp vpnv4 unicast all neighbors 10.0.0.2 | in ntern
R5#sh bgp vpnv4 unicast al summary | in Neigh|10.0.0.2
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
10.0.0.2 4 65535 60 66 0 0 0 00:00:19 Active
R5#
*Feb 17 07:33:45.783: %BGP-5-ADJCHANGE: neighbor 10.0.0.2 Up
*Feb 17 07:33:45.787: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.8:1:192.168.0.0/16, next 10.0.0.8, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.791: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.6:1:192.168.6.0/30, next 10.0.0.6, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.795: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.5:1:192.168.0.0/16, next 10.0.0.5, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.799: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.7:1:192.168.3.0/24, next 10.0.0.7, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.803: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.4:1:192.168.2.0/24, next 10.0.0.4, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.807: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.8:1:38.128.1.0/24, next 10.0.0.8, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.811: BGP(2):
R5# 10.0.0.2 send UPDATE (prepend, chgflags: 0x0) 10.0.0.8:1:192.168.5.0/30,
next 10.0.0.8, metric 0, path Local, extended community RT:1:1
*Feb 17 07:33:45.815: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.1:1:192.168.1.0/24, next 10.0.0.1, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.819: BGP(2): 10.0.0.2 send UPDATE (prepend, chgflags: 0x0)
10.0.0.1:1:192.168.4.0/30, next 10.0.0.1, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.823: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.5:1:12.128.1.0/24, next 10.0.0.5, metric 0, path Local, extended
community RT:1:1
*Feb 17 07:33:45.827: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.8:1:0.0.0.0/0, next 10.0.0.8, metric 0, path 174, extended community
RT:1:1
*Feb 17 07:33:45.831: BGP(2): 10.0.0.2 send UPDATE (format)
10.0.0.5:1:0.0.0.0/0, next 10.0.0.5, metric 0, path 7018, extended community
RT:1:1
R5#
*Feb 17 07:33:50.803: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.803: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.6,
origin i, localpref 100, originator 10.0.0.6, clusterlist 0.0.0.1, path ,
community , extended community RT:1:1
*Feb 17 07:33:50.807: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.6:1:192.168.6.0/30 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.811: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.811: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.3,
origin ?, localpref 100, metric 0, originator 10.0.0.3, clusterlist 0.0.0.1,
path , community , extended community RT:1:1
*Feb 17 07:33:50.815: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.3:1:192.168.7.0/30 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.819: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.819: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.7,
origin ?, localp
R5#ref 100, metric 0, originator 10.0.0.7, clusterlist 0.0.0.1, path ,
community , extended community RT:1:1
*Feb 17 07:33:50.823: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.7:1:192.168.3.0/24 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.823: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.827: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.4,
origin ?, localpref 100, metric 0, originator 10.0.0.4, clusterlist 0.0.0.1,
path , community , extended community RT:1:1
*Feb 17 07:33:50.831: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.4:1:192.168.2.0/24 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.831: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.835: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.8,
origin ?, localpref 100, metric 0, originator 10.0.0.8, clusterlist 0.0.0.1,
path , community , extended community RT:1:1
*Feb 17 07:33:50.839: BGP(2): 10.0.0.2 rcv UPDATE about 10.0
R5#.0.8:1:192.168.5.0/30 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.839: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.8:1:38.128.1.0/24 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.847: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.851: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.1,
origin ?, localpref 100, metric 0, originator 10.0.0.1, clusterlist 0.0.0.1,
path , community , extended community RT:1:1
*Feb 17 07:33:50.855: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.1:1:192.168.4.0/30 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.855: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.1:1:192.168.1.0/24 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.855: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.859: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.8,
origin i, localpref 100, atomic-aggregate, aggregated by 65535 10.0.0.8,
originator
R5# 10.0.0.8, clusterlist 0.0.0.1, path , community , extended community
RT:1:1
*Feb 17 07:33:50.863: BGP(2): 10.0.0.2 rcv UPDATE about
10.0.0.8:1:192.168.0.0/16 -- DENIED due to: reflected from the same cluster;
*Feb 17 07:33:50.863: BGP: 10.0.0.2 RR in same cluster. Reflected update
dropped
*Feb 17 07:33:50.863: BGP(2): 10.0.0.2 rcv UPDATE w/ attr: nexthop 10.0.0.8,
origin i, localpref 100, metric 0, originator 10.0.0.8, clusterlist 0.0.0.1,
path 174, community , extended community RT:1:1
*Feb 17 07:33:50.863: BGP(2): 10.0.0.2 rcv UPDATE about 10.0.0.8:1:0.0.0.0/0
-- DENIED due to: reflected from the same cluster;
R5#sh bgp vpnv4 unicast all neighbors 10.0.0.2 | in ntern
BGP neighbor is 10.0.0.2, remote AS 65535, internal link
R5#
R5#sh bgp vpnv4 unicast al summary | in Neigh|10.0.0.2
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
10.0.0.2 4 65535 71 80 35 0 0 00:00:27 0
R5#u all
All possible debugging has been turned off
R5#
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