From: Shamin (ccie.xpert@gmail.com)
Date: Sun Mar 04 2007 - 11:39:21 ART
Hi all,
Hope your preparations are going good.
I have a peculiar situation running EIGRP over PPPover Frame.
R5 ---------- R3 -------------R4
R3 is the hub and R4,R5 are the spokes. R3 & R4 are using main interfaces.
R5 is using a point -to - point interface.
The PPPoverFrame seems to be working. I can ping spoke to spoke . Now when i
enable EIGRP , over this there is a problem that
R4 is not receiving any Eigrp routes from R3 or R5. I configured Loopback
100 on R3 with Ip 3.3.3.3 and advertised it into eigrp.
R5 seems to be receiving this route where as R4 is not.
R5 is able to receive the Loopback of R4 where as R4 is not receiving the R5
Loopback route.
Can any one help reason why this is happening. The debug commands of eigrp
is not very helpful in this. I dont think this is a split horizon issue as
well.
I will post the configuration on each router as below.
----------------------------------------------------------------------------------------------------
R3#
username Rack1R4 password 0 CISCO
username Rack1R5 password 0 CISCO
!
!
!
!
interface Loopback100
ip address 3.3.3.3 255.255.255.0
!
interface Serial2/0
no ip address
encapsulation frame-relay
frame-relay interface-dlci 304 ppp Virtual-Template1
frame-relay interface-dlci 305 ppp Virtual-Template1
!
interface Virtual-Template1
ip address 158.1.0.3 255.255.255.0
ppp authentication pap chap
!
router eigrp 10
network 3.3.3.3 0.0.0.0
network 158.1.0.3 0.0.0.0
metric weights 0 1 1 1 0 0
no auto-summary
eigrp router-id 150.1.3.3
!
R3#sh ip route eigrp
4.0.0.0/24 is subnetted, 1 subnets
D 4.4.4.0 [90/2713700] via 158.1.0.4, 00:22:26, Virtual-Access1
158.1.0.0/16 is variably subnetted, 11 subnets, 2 masks
D 158.1.5.0/24 [90/2842603] via 158.1.0.5, 00:22:26, Virtual-Access2
D 158.1.55.0/24 [90/2842603] via 158.1.0.5, 00:22:26, Virtual-Access2
150.1.0.0/16 is variably subnetted, 6 subnets, 2 masks
D 150.1.5.0/24 [90/2713700] via 158.1.0.5, 00:22:26, Virtual-Access2
D 150.1.4.0/24 [90/2713700] via 158.1.0.4, 00:22:26, Virtual-Access1
------------------------------------------------------------------------------------------------------------------------------------
R4#
username Rack1R3 password 0 CISCO
!
!
interface Loopback0
ip address 150.1.4.4 255.255.255.0
!
interface Loopback100
ip address 4.4.4.4 255.255.255.0
!
interface Serial0/0
no ip address
encapsulation frame-relay
frame-relay interface-dlci 403 ppp Virtual-Template1
!
!
interface Virtual-Template1
ip address 158.1.0.4 255.255.255.0
no peer neighbor-route
!
router eigrp 10
network 4.4.4.4 0.0.0.0
network 150.1.4.4 0.0.0.0
network 158.1.0.4 0.0.0.0
network 158.1.45.4 0.0.0.0
metric weights 0 1 1 1 0 0
no auto-summary
eigrp router-id 150.1.4.4
!
R4#sh ip route
Gateway of last resort is not set
C 204.12.1.0/24 is directly connected, Ethernet0/1
4.0.0.0/24 is subnetted, 1 subnets
C 4.4.4.0 is directly connected, Loopback100
158.1.0.0/24 is subnetted, 1 subnets
C 158.1.0.0 is directly connected, Virtual-Access1
C 192.10.1.0/24 is directly connected, Ethernet0/0
150.1.0.0/24 is subnetted, 1 subnets
C 150.1.4.0 is directly connected, Loopback0
--------------------------------------------------------------------------------------------------------------------
R5#
!
!
!
interface Loopback0
ip address 150.1.5.5 255.255.255.0
!
interface Ethernet0/0
ip address 158.1.5.5 255.255.255.0
half-duplex
!
interface Serial0/0
no ip address
encapsulation frame-relay
!
interface Serial0/0.1 point-to-point
frame-relay interface-dlci 503 ppp Virtual-Template1
!
interface Ethernet0/1
ip address 158.1.55.5 255.255.255.0
half-duplex
!
interface Virtual-Template1
ip address 158.1.0.5 255.255.255.0
ppp chap password 0 CISCO
!
router eigrp 10
network 150.1.5.5 0.0.0.0
network 158.1.0.5 0.0.0.0
network 158.1.5.5 0.0.0.0
network 158.1.45.5 0.0.0.0
network 158.1.55.5 0.0.0.0
metric weights 0 1 1 1 0 0
no auto-summary
eigrp router-id 150.1.5.5
!
R5#sh ip route eigrp
3.0.0.0/24 is subnetted, 1 subnets
D 3.3.3.0 [90/2713700] via 158.1.0.3, 00:36:01, Virtual-Access1
4.0.0.0/24 is subnetted, 1 subnets
D 4.4.4.0 [90/5273700] via 158.1.0.3, 00:35:31, Virtual-Access1
158.1.0.0/16 is variably subnetted, 5 subnets, 2 masks
D 158.1.0.4/32 [90/5145700] via 158.1.0.3, 00:54:44, Virtual-Access1
150.1.0.0/24 is subnetted, 2 subnets
D 150.1.4.0 [90/5273700] via 158.1.0.3, 00:30:47, Virtual-Access1
--------------------------------------------------------------------------------------------------------------------------
Your help will be much appreciated. I dont see a reason why after forming an
adjacency between R3 & R4 , the routes are only updated one way i.e from R4
to R3 and R5 but not back.
Regards
Shameen
This archive was generated by hypermail 2.1.4 : Sun Apr 01 2007 - 06:35:50 ART