01-31-2014 09:29 AM - edited 03-04-2019 10:13 PM
Hi,
I am running a direct link between two locations and eigrp is running over it, but its flapping a lot. Below is the configuration
S1#sh run int vl87
Building configuration...
Current configuration : 179 bytes
!
interface Vlan87
mtu 1536
ip address 143.97.16.109 255.255.255.252
ip authentication mode eigrp 224 md5
ip authentication key-chain eigrp 224 statoil-internal
mpls ip
end
S1#sh run int te3/6
Building configuration...
Current configuration : 132 bytes
!
interface TenGigabitEthernet3/6
switchport
switchport access vlan 87
switchport mode access
mtu 9216
mls qos trust dscp
end
At switch 2 the configuration is
S2#sh run int vl87
Building configuration...
Current configuration : 179 bytes
!
interface Vlan87
mtu 1536
ip address 143.97.16.110 255.255.255.252
ip authentication mode eigrp 224 md5
ip authentication key-chain eigrp 224 statoil-internal
mpls ip
end
S2#sh run int te2/3/7
Building configuration...
Current configuration : 134 bytes
!
interface TenGigabitEthernet2/3/7
switchport
switchport access vlan 87
switchport mode access
mtu 9216
mls qos trust dscp
end
The eigrp is flapping a lot and I am getting RTO s 5000
EIGRP-IPv4 Neighbors for AS(224)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 143.97.16.110 Vl87 12 00:00:11 1 5000 1 0
Please help me.
02-04-2014 07:44 AM
Hello, Anuj.
Try to troubleshoot your link for packet loss.
Wheneven you see Q count not equal to 0 ("1" in your case) - it's not a flap - it's one-way traffic flow.
So, if up-time is about 10+ seconds and Q!=0, then - S1 receives EIGRP traffic, but S2 does not.
PS: check your log for details; please provide "sh int te..."
02-17-2014 06:31 AM
I ran debug eigrp and toggle the neighbourship which resolved the issue. Thanks
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