This is in regard to Workbook 1, Lab 9, Task 9.9. I am not sure if anyone has
run into this issue before.
The same command is applied to the frame-relay interfaces on R2, R5 and R6 to
set the EIGRP hello interval:
ip hello-interval eigrp 1001 20
Afterward, all three routers are using a hold timer of 180 seconds for the
EIGRP neighbor on the frame cloud and the neighbors are fully up.
R2#sh ip ei nei
IP-EIGRP neighbors for process 1001
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 150.100.100.5 Se0/1/0.256 167 00:01:47 1251 5000 0 557
R5#sh ip ei nei
IP-EIGRP neighbors for process 1001
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 150.100.100.2 Se0/1/0 166 00:02:08 103 2646 0 124
If I save the configuration on either R5 or R6 and reload the router, the
running configuration that appears on the serial interface changes. This
behavior is exactly the same on R5 and R6.
R5 before reload:
interface Serial0/1/0
bandwidth 64
ip address 150.100.100.5 255.255.255.0
ip bandwidth-percent eigrp 1001 43
ip hello-interval eigrp 1001 20
encapsulation frame-relay
clock rate 2000000
frame-relay map ip 150.100.100.2 502 broadcast
frame-relay map ip 150.100.100.6 502
no frame-relay inverse-arp
frame-relay lmi-type cisco
R5 after reload:
interface Serial0/1/0
bandwidth 64
ip address 150.100.100.5 255.255.255.0
ip bandwidth-percent eigrp 1001 43
ip hello-interval eigrp 1001 20
ip hold-time eigrp 1001 15
encapsulation frame-relay
clock rate 2000000
frame-relay map ip 150.100.100.6 502
frame-relay map ip 150.100.100.2 502 broadcast
no frame-relay inverse-arp
frame-relay lmi-type cisco
end
A new line appears in the running config for the interface: “ip hold-time
eigrp 1001 15”
When R5 comes back up, R5 continues to use a hold timer of 180 seconds for R2,
but R2 begins using a hold timer of 15 seconds for R5. This mismatch results
in a continuously flapping neighbor adjacency.
Attempting to add the command “ip hold-time eigrp 1001 180” to the
serial0/1/0.256 interface on R2 does not have any effect and never shows in
the running configuration of the interface even after a reload.
I am able to clear the issue by removing the “hello-interval” and
“hold-time” commands from the R5 (or R6) serial interface and then
reapplying the “ip hello-interval eigrp 1001 20” command. However, this
condition only lasts until the next reload.
IOS versions for R2, R5 and R6 in this pod:
R2: c2800nm-adventerprisek9-mz.124-24.T2
R5: c2800nm-adventerprisek9-mz.124-15.T9
R6: c2801-adventerprisek9-mz.124-24.T2
I am just not sure is this is an isolated issue, or if there is something I am
missing
Many thanks
Kind regards
jpn
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