10-22-2025 08:01 AM
Hi All,
Am trying to advertise default router getting from Site01Edg101 over ISIS on RTR-PE-35 , and now try to adverstie this default route to VRF Cust-A using OSPF , but not able to succeed. Configs is mentioned below for some tips .
Secondly I believe SLA is best options to provide redundancy from RTR-PE39. right?
RTR-CPE35#show run | sec router bgp
router bgp 65000
bgp log-neighbor-changes
neighbor 192.168.100.36 remote-as 65000
neighbor 192.168.100.36 update-source Loopback0
neighbor 192.168.100.39 remote-as 65000
neighbor 192.168.100.39 update-source Loopback0
neighbor 192.168.100.40 remote-as 65000
neighbor 192.168.100.40 update-source Loopback0
!
address-family vpnv4
neighbor 192.168.100.36 activate
neighbor 192.168.100.36 send-community extended
neighbor 192.168.100.39 activate
neighbor 192.168.100.39 send-community extended
neighbor 192.168.100.40 activate
neighbor 192.168.100.40 send-community extended
exit-address-family
!
address-family ipv4 vrf CUST-A
redistribute ospf 1
default-information originate
exit-address-family
RTR-CPE35#show run | sec router OSPF
RTR-CPE35#show run | sec router ospf
router ospf 1 vrf CUST-A
redistribute bgp 65000 subnets
network 10.10.150.0 0.0.0.255 area 0
RTR-CPE35#
RTR-CPE35#
RTR-CPE35#
RTR-CPE35#show run | sec router isis
ip router isis
ip router isis
ip router isis
ip router isis
ip router isis
router isis
mpls ldp autoconfig
net 49.0000.0000.0000.0035.00
is-type level-2-only
domain-password dingdong.com
log-adjacency-changes all
RTR-CPE35#show ip bgp vpnv4 vrf CUST-A
BGP table version is 16, local router ID is 192.168.100.35
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
t secondary path,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 100:100 (default for vrf CUST-A)
*> 10.10.150.0/24 0.0.0.0 0 32768 ?
*>i 10.10.151.0/24 192.168.100.36 0 100 0 ?
*>i 10.10.163.0/24 192.168.100.40 0 100 0 ?
*>i 10.10.164.0/24 192.168.100.39 0 100 0 ?
*> 192.168.33.33/32 10.10.150.33 2 32768 ?
*>i 192.168.41.41/32 192.168.100.39 2 100 0 ?
*>i 192.168.42.42/32 192.168.100.40 2 100 0 ?
RTR-CPE-33# show run | sec router
router ospf 1
network 10.10.150.0 0.0.0.255 area 0
network 192.168.33.33 0.0.0.0 area 0
RTR-CPE-33#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.10.150.0/24 is directly connected, GigabitEthernet0/0
L 10.10.150.33/32 is directly connected, GigabitEthernet0/0
O IA 10.10.151.0/24 [110/2] via 10.10.150.35, 00:51:36, GigabitEthernet0/0
O IA 10.10.163.0/24 [110/2] via 10.10.150.35, 01:02:29, GigabitEthernet0/0
O IA 10.10.164.0/24 [110/2] via 10.10.150.35, 00:46:35, GigabitEthernet0/0
192.168.33.0/32 is subnetted, 1 subnets
C 192.168.33.33 is directly connected, Loopback100
192.168.41.0/32 is subnetted, 1 subnets
O IA 192.168.41.41 [110/3] via 10.10.150.35, 00:44:32, GigabitEthernet0/0
192.168.42.0/32 is subnetted, 1 subnets
O IA 192.168.42.42 [110/3] via 10.10.150.35, 01:02:29, GigabitEthernet0/0
192.168.100.0/32 is subnetted, 1 subnets
C 192.168.100.33 is directly connected, Loopback0
10-28-2025 08:32 AM
Hello @uni1389 ,
default routes are not passed with redistribution between different routing protocols.
if you want the PE node RTR-CPE35 to send out a default route in OSPF to CE node you need to configure the default-originate under the OSPF process.
Hope to help
Giuseppe
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