I have an issue that has been racking my brain and I just can not figure it
out.
I have 3 routers Using Multilink PPP. R6 ----- R2 ------ R5
When all links are up R2 believes any routes behind R5 are actually reachable
through R6. The example below is a loopback on R5 (5.5.5.5). In all cases it
knows that 143.43.65.5 is the next hop, however the router believes to get to
143.43.65.5 is through Multilink 2 when it has to route. (aka pinging
143.43.65.5 works from R2, but every route in the routing table shows
143.43.65.5 via Multilink 2 when it should actually follow Multilink 1)
Area 0 is on a loopback on R2.
Any help would be great. I am pulling out the few hairs I have left on the
top of my head. I have tried every show command I and think of and even
started trying show commands I never heard off. Tried several different
debugs but nothing!
If I don't figure it out soon, my head may get so bare and shiney that light
bouncing off of it may blind a proctor during my lab. How many points do you
lose for that?
R2
interface Multilink1
ip address 143.43.65.2 255.255.255.0
ip ospf network point-to-multipoint
ip ospf hello-interval 10
ppp multilink
ppp multilink group 1
!
interface Multilink2
ip address 143.43.65.2 255.255.255.0
ip ospf network point-to-multipoint
ip ospf hello-interval 10
ppp multilink
ppp multilink group 2
interface Serial0/1/0
no ip address
encapsulation frame-relay
frame-relay traffic-shaping
frame-relay interface-dlci 205 ppp Virtual-Template1
frame-relay interface-dlci 206 ppp Virtual-Template2
frame-relay interface-dlci 215 ppp Virtual-Template1
frame-relay interface-dlci 216 ppp Virtual-Template2
frame-relay interface-dlci 225 ppp Virtual-Template1
frame-relay interface-dlci 226 ppp Virtual-Template2
no frame-relay inverse-arp
!
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 1
!
interface Virtual-Template2
no ip address
ppp multilink
ppp multilink group 2
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 0.0.37.128 virtual-link 5.5.5.5
redistribute eigrp 24 subnets
network 143.43.65.2 0.0.0.0 area 0.0.37.128
Routing entry for 5.5.5.5/32
Known via "ospf 1", distance 110, metric 1191, type inter area
Redistributing via eigrp 24
Advertised by eigrp 24 metric 1 1 1 1 1
Last update from 143.43.65.5 on Multilink2, 00:35:54 ago
Routing Descriptor Blocks:
* 143.43.65.5, from 5.5.5.5, 00:35:54 ago, via Multilink2
Route metric is 1191, traffic share count is 1
Neighbor ID Pri State Dead Time Address Interface
5.5.5.5 0 FULL/ - - 143.43.65.5 OSPF_VL0
6.6.6.6 0 FULL/ - 00:01:32 143.43.65.6 Multilink2
5.5.5.5 0 FULL/ - 00:01:48 143.43.65.5 Multilink1
R5
interface Multilink1
ip address 143.43.65.5 255.255.255.0
ip ospf network point-to-point
ppp multilink
ppp multilink group 1
interface Serial0/1/0
no ip address
encapsulation frame-relay
frame-relay traffic-shaping
frame-relay interface-dlci 502 ppp Virtual-Template1
frame-relay interface-dlci 512 ppp Virtual-Template1
frame-relay interface-dlci 522 ppp Virtual-Template1
no frame-relay inverse-arp
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 1
!
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
area 0.0.37.128 virtual-link 2.2.2.2
network 143.43.65.5 0.0.0.0 area 0.0.37.128
!
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - - 143.43.65.2 OSPF_VL0
192.168.2.8 1 FULL/DR 00:00:38 143.43.200.2
FastEthernet0/0
2.2.2.2 0 FULL/ - 00:01:30 143.43.65.2 Multilink1
R6
interface Multilink2
ip address 143.43.65.6 255.255.255.0
ip ospf network point-to-point
ppp multilink
ppp multilink group 2.
interface Serial0/1/0
no ip address
encapsulation frame-relay
frame-relay traffic-shaping
frame-relay interface-dlci 602 ppp Virtual-Template1
frame-relay interface-dlci 612 ppp Virtual-Template1
frame-relay interface-dlci 622 ppp Virtual-Template1
no frame-relay inverse-arp
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 2
!
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
network 143.43.65.6 0.0.0.0 area 0.0.37.128
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:01:56 143.43.65.2 Multilink2
143.43.96.9 0 FULL/ - 00:00:39 143.43.96.9 MFR1.1
Known via "ospf 1", distance 110, metric 2381, type inter area
Last update from 143.43.65.2 on Multilink2, 00:44:10 ago
Routing Descriptor Blocks:
* 143.43.65.2, from 5.5.5.5, 00:44:10 ago, via Multilink2
Route metric is 2381, traffic share count is 1
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Received on Tue Sep 22 2009 - 19:49:21 ART
This archive was generated by hypermail 2.2.0 : Sun Oct 04 2009 - 07:42:04 ART