Here is the routing table on R2 and R4. I have a hub and spoke config with
frame relay between R1 - R2,R3, and the frame connection between R1 and R4
is not coming up so hence the need for a direct serial back to back from R2
to R4.
R2#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
C 223.2.2.0/24 is directly connected, Loopback0
172.16.0.0/24 is subnetted, 3 subnets
O IA 172.16.5.0 [110/128] via 172.16.1.3, 16:37:46, Serial0
O 172.16.6.0 [110/74] via 172.16.1.1, 18:17:57, Serial0
C 172.16.1.0 is directly connected, Serial0
is directly connected, Serial1
10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
O IA 10.1.11.1/32 [110/65] via 172.16.1.1, 18:17:57, Serial0
O IA 10.1.12.1/32 [110/65] via 172.16.1.1, 18:17:57, Serial0
O IA 10.1.31.1/32 [110/65] via 172.16.1.3, 18:17:58, Serial0
C 10.1.22.0/24 is directly connected, Loopback2
C 10.1.21.0/24 is directly connected, Loopback1
O IA 10.1.32.1/32 [110/65] via 172.16.1.3, 18:17:58, Serial0
R4#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
C 223.4.4.0/24 is directly connected, Loopback0
172.16.0.0/24 is subnetted, 2 subnets
C 172.16.6.0 is directly connected, Ethernet0
C 172.16.1.0 is directly connected, Serial1
10.0.0.0/24 is subnetted, 2 subnets
C 10.1.42.0 is directly connected, Loopback2
C 10.1.41.0 is directly connected, Loopback1
As you can see there is no direct connection shown between serial 1 on R4
which is 172.16.1.4 which is directly connected to serial 1 on R2 172.16.1.5
. It may have something to do with the load balance or another path to the
same source. Any suggestions welcome and appreciated.
Thank you,
Randy
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