Hi. (thanks for reading :)
I am trying to establish a simple OSPF neighborship between a juniper and Cisco 7606 (WS-X6708-10GE) with some issues. (it works in the GNS3 lab no problem)
The Cisco 7606 would appear to be sending (tx) hello messages, but the MX is not receiving and therefore the stuck in OSPF INIT state. I have tried various MTU and IP MTU setting as originally thought it could be this. But no.
I can confirm both routers using 10 second hello, different router id, subnet mask, area id etc
From a cisco debug and packet trace, the cisco sends (Tx) the hello packet out the interface. But juniper does not receive (Rx) it from juniper capture.
who's telling porky pies ? Any ideas ?
thank again, Matt
p.s
I can ping fine .
its a direct back-to-back ethernet link
…………………………………………………………………………………………..
CISCO config:
interface TenGigabitEthernet2/4
mtu 9216
ip mtu 9178
ip address 10.254.254.13 255.255.255.252
router ospf 10
router-id 10.10.0.10
network 10.254.254.12 0.0.0.3 area 0
cisco router#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
10.254.254.102 128 INIT/DROTHER 00:00:32 10.254.254.14 TenGigabitEthernet2/4
Debug
5d20h: OSPF: rcv. v:2 t:1 l:44 rid:10.254.254.102 aid:0.0.0.0 chk:D8B1 aut:0 auk: from TenGigabitEthernet2/4
5d20h: OSPF: Rcv hello from 10.254.254.102 area 0 from TenGigabitEthernet2/4 10.254.254.14
5d20h: OSPF: Send immediate hello to nbr 10.254.254.102, src address 10.254.254.14, on TenGigabitEthernet2/4
5d20h: OSPF: Send hello to 10.254.254.14 area 0 on TenGigabitEthernet2/4 from 10.254.254.13
……………………………
Packet trace
6d01h: IP: s=10.254.254.13 (local), d=224.0.0.5 (TenGigabitEthernet2/4), len 80, output feature, Post-Ingress-NetFlow(51), rtype 0, forus FALSE, sendself FALSE, mtu 0
…………………………………………….
cisocrouter#ping 10.254.254.14
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.254.254.14, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
…………………………………………………………………………………………..
xe-0/2/8 {
mtu 9192
unit 0 {
family inet {
address 10.254.254.14/30;
R02-re0# show protocols ospf
area 0.0.0.0 {
interface xe-0/2/8.0;
R02-re0# run show ospf interface detail
Interface State Area DR ID BDR ID Nbrs
xe-0/2/8.0 DR 0.0.0.0 10.254.254.102 0.0.0.0 0
Type: LAN, Address: 10.254.254.14, Mask: 255.255.255.252, MTU: 9178, Cost: 1
DR addr: 10.254.254.14, Priority: 128
Adj count: 0
Hello: 10, Dead: 40, ReXmit: 5, Not Stub
Auth type: None
Protection type: None
Topology default (ID 0) -> Cost: 1
R02-re0# run show interfaces xe-0/2/8 detail | match MTU
Link-level type: Ethernet, MTU: 9192, MRU: 9200, LAN-PHY mode, Speed: 10Gbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: None, Source filtering: Disabled,
Protocol inet, MTU: 9178, Generation: 517, Route table: 0
Protocol mpls, MTU: 9166, Maximum labels: 3, Generation: 518, Route table: 0
Protocol multiservice, MTU: Unlimited, Generation: 519, Route table: 0
britannic@GS1-MX_R02-re0# run show ospf statistics | match Hell
Hello sent 27084 Received 0 0 0
R02-re0# run show ospf neighbor
{master}[edit]
