Hello,
I am having absolutely no luck making unicast EIGRP over frame relay work.
(This is for training purposes, and is NOT indicative of any kind of production network. I asked the same question over on learning network and have thus far gotten no answers that fix anything).
This is being done on a set of 2901's running IOS 15.3(2)T2. The frame switch is a 3745 running c3745-jk9s-mz.123-9a
The scenario is that I have three routers in a hub-and-spoke network
I am trying to implement unicast frame relay by setting the neighbors manually, allowing R4 and R2 to form an adjacency, even though they don't have a PVC.
I put static mappings in for everyting just to eliminate any question about mapping.
Here are the configurations:
FRS:
interface Serial3/2
description <[ S3/2 to R25 s0/0/0 ]>
no ip address
encapsulation frame-relay IETF
clockrate 128000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 41 interface Serial3/3 42
frame-relay route 43 interface Serial3/4 44
!
interface Serial3/3
description <[ S3/3 to R26 s0/0/0 ]>
no ip address
encapsulation frame-relay IETF
clockrate 128000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 42 interface Serial3/2 41
!
interface Serial3/4
description <[ s3/4 to R27 s0/2/0 ]>
no ip address
encapsulation frame-relay IETF
clockrate 128000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 44 interface Serial3/2 43
!
R1:
R1#sh run | se Serial0/0/0
interface Serial0/0/0
ip address 172.16.124.1 255.255.255.248
no ip split-horizon eigrp 1
encapsulation frame-relay IETF
frame-relay map ip 172.16.124.4 43 broadcast
frame-relay map ip 172.16.124.2 41 broadcast
neighbor 172.16.124.2 Serial0/0/0
neighbor 172.16.124.4 Serial0/0/0
R1#sh run | se eigrp
router eigrp 1
network 1.0.0.0
network 10.0.0.0
network 172.16.0.0
neighbor 172.16.124.2 Serial0/0/0
neighbor 172.16.124.4 Serial0/0/0
R1#
R2:
R2#sho run | se Serial0/0/0
interface Serial0/0/0
ip address 172.16.124.2 255.255.255.248
encapsulation frame-relay IETF
frame-relay map ip 172.16.124.4 42 broadcast
frame-relay map ip 172.16.124.1 42
neighbor 172.16.124.1 Serial0/0/0
neighbor 172.16.124.4 Serial0/0/0
R2#sho run | sec eigrp
router eigrp 1
network 2.0.0.0
network 10.0.0.0
network 172.16.0.0
neighbor 172.16.124.1 Serial0/0/0
neighbor 172.16.124.4 Serial0/0/0
R2#
R4::
R4#sh run | se Serial0/0/0
interface Serial0/0/0
ip address 172.16.124.4 255.255.255.248
encapsulation frame-relay IETF
frame-relay map ip 172.16.124.2 44 broadcast
frame-relay map ip 172.16.124.1 44
neighbor 172.16.124.1 Serial0/0/0
neighbor 172.16.124.2 Serial0/0/0
R4#sho run | se eigrp
router eigrp 1
network 4.0.0.0
network 10.0.0.0
network 172.16.0.0
neighbor 172.16.124.1 Serial0/0/0
neighbor 172.16.124.2 Serial0/0/0
R4#
The adjacency between R1 and R4 and R2 and R4 comes up with no problems, but R2 to R4 never comes up.
I used debug ip packet with an ACL specifying R2 and R4's s0/0/0 ip address as the source and destination, and I can see that that hellos are sent from R4, I can see that R1 gets them and re-routes them to R2, but R2 NEVER sees them. EIGRP between R1-R4 and R1-R2 is working, and I can ping back and forth between the R2 and R4 interfaces.
Here is R4 sending a Hello to R2 (debugging eigrp packets and frame-relay packets)
Apr 2 18:35:42.847: Serial0/0/0(o): dlci 44(0x8C1), NLPID 0x3CC(IP), datagramsize 64
Apr 2 18:35:42.847: EIGRP: Sending HELLO on Se0/0/0 - paklen 20 nbr 172.16.124.2
Apr 2 18:35:42.847: AS 1, Flags 0x0:(NULL), Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0
Here is the routing at R1 (debugging ip packets with an ACL and frame-relay packets)
Apr 2 18:35:42.856: FIBipv4-packet-proc: route packet from Serial0/0/0 src 172.16.124.4 dst 172.16.124.2
Apr 2 18:35:42.856: FIBfwd-proc: packet routed by adj to Serial0/0/0 172.16.124.2
Apr 2 18:35:42.856: FIBipv4-packet-proc: packet routing succeeded
Apr 2 18:35:42.856: Serial0/0/0(o): dlci 43(0x8B1), NLPID 0x3CC(IP), datagramsize 60
Apr 2 18:35:42.856: IP: s=172.16.124.4 (Serial0/0/0), d=172.16.124.2, len 60, input feature, proto=88, packet consumed, MCI Check(94), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
And then there is NO OUTPUT at R2 from the IP packet or frame-relay packet debugs (it's seeing the hellos from R1, but not the hellos from R4).
Any suggestions would be greatly appreciated.
