Dear Colleagues,
Please look at the network diagram at http://noc.sibptus.ru/~sudakov/MPBGP2.PNG
When I issue "display bgp vpnv4 vpn-instance XXX routing-table" on PE1, I
see that the routes 10.67.75.216/29 and 10.67.80.4/31 are treated
differently, and namely the route 10.67.80.4/31 is lacking any OSPF-related
attributes (see below). Therefore (?) CE1 sees it as OSPF external route
instead of internal.
Why is that so?
<PE1>display bgp vpnv4 vpn-instance XXX routing-table 10.67.75.216
BGP local router ID : 172.21.16.41
Local AS number : 64580
VPN-Instance XXX, Router ID 172.21.16.41:
Paths: 1 available, 1 best, 1 select
BGP routing table entry information of 10.67.75.216/29:
Label information (Received/Applied): 1247/NULL
From: 172.21.16.1 (172.21.16.1)
Route Duration: 00h14m22s
Relay Tunnel Out-Interface: GigabitEthernet0/0/2
Relay token: 0x48007eed
Original nexthop: 172.21.16.42
Qos information : 0x0
Ext-Community:RT <64580 : 64>, OSPF DOMAIN ID <0.0.0.0 : 0>,
OSPF ROUTER ID <10.67.80.5 : 0>, OSPF RT <0.0.0.0 : 1 : 0>
AS-path Nil, origin incomplete, MED 3, localpref 100, pref-val 0, valid,
internal, best, select, active, pre 255, IGP cost 20
Originator: 172.21.16.42
Cluster list: 172.21.16.1
Not advertised to any peer yet
<R1>display bgp vpnv4 vpn-instance XXX routing-table 10.67.80.4
BGP local router ID : 172.21.16.41
Local AS number : 64580
VPN-Instance XXX, Router ID 172.21.16.41:
Paths: 1 available, 1 best, 1 select
BGP routing table entry information of 10.67.80.4/31:
Label information (Received/Applied): 1247/NULL
From: 172.21.16.1 (172.21.16.1)
Route Duration: 4d23h08m06s
Relay Tunnel Out-Interface: GigabitEthernet0/0/2
Relay token: 0x48007eed
Original nexthop: 172.21.16.42
Qos information : 0x0
Ext-Community:RT <64580 : 64>
AS-path Nil, origin incomplete, MED 0, localpref 100, pref-val 0, valid,
internal, best, select, active, pre 255, IGP cost 20
Originator: 172.21.16.42
Cluster list: 172.21.16.1
Not advertised to any peer yet
The routes are imported on PE2 by the BGP subcommand:
#
ipv4-family vpn-instance XXX
import-route ospf 65
#
So my assumption was that both should be imported as OSPF routes.
Thanks in advance for any ideas.
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
AS43859
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