06-20-2024
08:49 AM
- last edited on
06-20-2024
04:58 PM
by
shule
I have configured MPLS BGP in GNS3. In core ISP network I run EIGRP as igp.MP-BGP is working fine. It seems everything working fine. When I advertise routes from one end of my site, I receive those routes on the other end of the site as expected. But the problem is that I am unable to ping that IP.
Routes advertised from one end of the site:
The Gateway of last resort is not set
17.0.0.0/30 is subnetted, 1 subnets
C 17.1.1.0 is directly connected, Serial2/2
42.0.0.0/32 is subnetted, 1 subnets
C 42.42.42.42 is directly connected, Loopback1
R7#
R7#
R7#sh run | sec bgp
router bgp 1000
no synchronization
bgp log-neighbor-changes
network 42.42.42.42 mask 255.255.255.255
neighbor 17.1.1.2 remote-as 500
no auto-summary
Route Received on other end at site:
R8#sh ip route
Codes: 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
Gateway of last resort is not set
18.0.0.0/30 is subnetted, 1 subnets
C 18.1.1.0 is directly connected, Serial2/2
42.0.0.0/32 is subnetted, 1 subnets
B 42.42.42.42 [20/0] via 18.1.1.2, 00:13:03
This 42.42.42.42 is received as expected but Unable to ping.
Solved! Go to Solution.
06-20-2024 08:51 AM
Hello @Ammartehsein
Ping with a source. Specify source IP for you ping/icmp request. A routable source known on the other end.
06-20-2024 08:53 AM
you need in CE to advertise LO in both site
and then use the LO as source of Ping
OR
in PE under bgp vrf you need to
redistribute connect
the issue is one of CE use prefix as source dont know by other CE
MHM
06-20-2024 08:51 AM
Hello @Ammartehsein
Ping with a source. Specify source IP for you ping/icmp request. A routable source known on the other end.
06-20-2024 08:53 AM
you need in CE to advertise LO in both site
and then use the LO as source of Ping
OR
in PE under bgp vrf you need to
redistribute connect
the issue is one of CE use prefix as source dont know by other CE
MHM
06-20-2024 09:22 AM
Oh, I see. It is working fine now when I advertise loopback and ping using loopback. Thanks, guys for your quick support
06-20-2024 12:53 PM
You're welcome @Ammartehsein
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