[c-nsp] BGP and CEF

[Pavel Kuzin]

Strange bug with cef on 6500/SUP720

Interesting info about prefix 77.88.0.0/18

bbn-ms-gw#sh ip bgp 77.88.0.0           
BGP routing table entry for 77.88.0.0/18, version 966106
Paths: (3 available, best #1, table Default-IP-Routing-Table)
  Advertised to update-groups:
     1          2          6         
  13238, (aggregated by 13238 87.250.233.154), (Received from a RR-client)
    91.151.194.7 (metric 20) from 91.151.194.7 (91.151.194.7)
      Origin IGP, metric 7, localpref 100, valid, internal, atomic-aggregate, best
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      Community: 29329:800 29329:29329,
      mpls labels in/out 239495/3948
  20764 13238, (aggregated by 13238 87.250.233.154)
    80.64.98.97 from 80.64.98.97 (80.64.96.131)
      Origin IGP, metric 10, localpref 100, valid, external, atomic-aggregate
      Community: 29329:20764 29329:29329,
      mpls labels in/out 239495/nolabel
  1299 1299 13238, (aggregated by 13238 87.250.233.227)
    213.248.67.33 from 213.248.67.33 (213.248.99.195)
      Origin IGP, metric 10, localpref 100, valid, external, atomic-aggregate
      Community: 29329:1299 29329:29329,
      mpls labels in/out 239495/nolabel

bbn-ms-gw#sh ip route 77.88.0.0     
Routing entry for 77.88.0.0/18
  Known via "bgp 29329", distance 200, metric 7
  Tag 13238, type internal
  Last update from 91.151.194.7 2d17h ago
  Routing Descriptor Blocks:
  * 91.151.194.7, from 91.151.194.7, 2d17h ago
      Route metric is 7, traffic share count is 1
      AS Hops 1
      Route tag 13238
      MPLS label: 3948
 
bbn-ms-gw#sh ip cef 77.88.21.11 detail    
77.88.0.0/18, epoch 6, flags rib defined all labels
  NetFlow: Origin AS 0, Peer AS 25462, Mask Bits 18
                                      ^^^^^^^^^^^^
  local label info: global/239495
  recursive via 91.151.194.7 label 3948
    nexthop 83.243.76.22 Vlan410

Haw it can be?

--
Pavel D.Kuzin
Nodex LTD.
Saint-Petersburg, Russia
pk at nodex.ru
http://nodex.ru
tel. +7 812 3800033 ext. 311
fax. +7 812 2304573