Доброго времени суток. Есть самый обычный eBGP сосед. Который, казалось бы, шлет один самый обычный nlri. При этом сталкиваюсь вот с такой, не понятной для меня, ситуацией, и как ее можно "загуглить" ума не приложу.
cisco#sh ip bgp x.x.x.0/24
BGP routing table entry for x.x.x.0/24, version 119452493
Paths: (2 available, best #1, table default)
Advertised to update-groups:
39 46 50
Refresh Epoch 1
200xxx
y.y.y.70 from y.y.y.70 (y.y.y.70)
Origin IGP, metric 0, localpref 100, weight 400, valid, external, best
Community: cccc:500
Refresh Epoch 1
200xxx, (received-only)
y.y.y.70 from y.y.y.70 (y.y.y.70)
Origin IGP, metric 0, localpref 100, valid, external
cisco#sh ip bgp x.x.x.0
% Network not in table
cisco#sh ip bgp x.x.x.127
% Network not in table
cisco#sh ip bgp x.x.x.128
BGP routing table entry for x.x.x.0/24, version 119452493
Paths: (2 available, best #1, table default)
Advertised to update-groups:
39 46 50
Refresh Epoch 1
200xxx
y.y.y.70 from y.y.y.70 (y.y.y.70)
Origin IGP, metric 0, localpref 100, weight 400, valid, external, best
Community: cccc:500
Refresh Epoch 1
200xxx, (received-only)
y.y.y.70 from y.y.y.70 (y.y.y.70)
Origin IGP, metric 0, localpref 100, valid, external
cisco#sh ip bgp x.x.x.255
BGP routing table entry for x.x.x.0/24, version 119452493
Paths: (2 available, best #1, table default)
Advertised to update-groups:
39 46 50
Refresh Epoch 1
200xxx
y.y.y.70 from y.y.y.70 (y.y.y.70)
Origin IGP, metric 0, localpref 100, weight 400, valid, external, best
Community: cccc:500
Refresh Epoch 1
200xxx, (received-only)
y.y.y.70 from y.y.y.70 (y.y.y.70)
Origin IGP, metric 0, localpref 100, valid, external
cisco#sh ip route x.x.x.1
Routing entry for x.x.x.0/24
Known via "bgp cccc", distance 20, metric 0
Tag 200xxx, type external
Redistributing via ospf 1
Advertised by ospf 1 metric 1000 subnets route-map bgp2ospf
Last update from y.y.y.70 17:13:51 ago
Routing Descriptor Blocks:
* y.y.y.70, from y.y.y.70, 17:13:51 ago
Route metric is 0, traffic share count is 1
AS Hops 1
Route tag 200xxx
MPLS label: none
cisco#sh ip route x.x.x.255
Routing entry for x.x.x.0/24
Known via "bgp cccc", distance 20, metric 0
Tag 200xxx, type external
Redistributing via ospf 1
Advertised by ospf 1 metric 1000 subnets route-map bgp2ospf
Last update from y.y.y.70 17:13:54 ago
Routing Descriptor Blocks:
* y.y.y.70, from y.y.y.70, 17:13:54 ago
Route metric is 0, traffic share count is 1
AS Hops 1
Route tag 200xxx
MPLS label: none
Происходит это на ASR1000 Version 15.1(3)S1, RELEASE SOFTWARE (fc1)
Есть этому научное объяснение?