09-27-2017 08:15 PM - edited 03-08-2019 12:11 PM
Hi
I connected ASR1001-X to C3850 which runs OSPF already. C3850 successfuly works OSPF wise with 2 other C3850 over VPLS (broadcast type OSPF) and with directly connected SonicWall.
ASR1001-X Gi0/0/1 is connected directly to C3850 Gi1/0/1. Both are running "router ospf 1" Both of them are configured in area 0.
C3850 see other C3850 neighbors but doesnt see ASR1001 as an OSPF neighbor. I have not much experience with OSPF so possibly I am missing something in config or simply config is wrong.
Here are OSPF configs on both devices:
router ASR
interface GigabitEthernet0/0/1
description uplink to C3850 port Gi1/0/1
ip address 10.80.80.234 255.255.255.252
negotiation auto
interface Loopback0
ip address 10.80.84.245 255.255.255.255
router ospf 1
passive-interface default
no passive-interface GigabitEthernet0/0/1
network 10.80.80.232 0.0.0.3 area 0
network 10.80.84.248 0.0.0.0 area 0
ASR#sh ip ospf neighbor
(don't see any neighbors)
-----------------------------------------------
switch C3850
interface GigabitEthernet1/0/1
description Link to ASR 1001-X port Gi0/0/1
no switchport
ip address 10.80.80.233 255.255.255.252
interface Loopback0
ip address 10.80.84.240 255.255.255.255
router ospf 1
passive-interface default
no passive-interface GigabitEthernet1/0/1 --> to ASR
no passive-interface GigabitEthernet1/1/1 --> to another 3850 running ospf
no passive-interface GigabitEthernet2/0/1 --> to SonicWall running ospf
network 10.10.0.0 0.0.0.255 area 0
network 10.80.56.0 0.0.1.255 area 0
|
|
|
network 10.80.84.240 0.0.0.0 area 0
network 172.29.0.0 0.0.15.255 area 0
network 172.31.254.0 0.0.0.255 area 0
C3850#sh ip ospf neighbor
10.80.84.241 6 FULL/BDR 00:00:37 172.31.254.2 GigabitEthernet1/1/1 | another C3850 (area 0)
10.80.84.242 1 FULL/DROTHER 00:00:39 172.31.254.3 GigabitEthernet1/1/1 | another C3850 (area 0)
10.80.63.194 1 FULL/BDR 00:00:30 10.80.63.194 GigabitEthernet2/0/1 | SonicWall (area 0)
as you shown I can't see ASr1001 as a neighbor.
Any idea what I am doing wrong or what is missing in the config?
Any help appreciated
Thank you
Solved! Go to Solution.
09-27-2017 09:34 PM - edited 09-28-2017 05:59 AM
Hi
Please correct me but I dont see this line under the OSPF on the 3850
router ospf 1
network 10.80.80.232 0.0.0.3 area 0
04-05-2018 04:05 AM
You are welcome my friend.
Have a great day!
:-)
09-27-2017 09:13 PM
Hello,
What "debug ip ospf hello" says on ASR ?
09-27-2017 09:34 PM - edited 09-28-2017 05:59 AM
Hi
Please correct me but I dont see this line under the OSPF on the 3850
router ospf 1
network 10.80.80.232 0.0.0.3 area 0
04-04-2018 10:36 PM
Thank you a lot for help
04-05-2018 04:05 AM
You are welcome my friend.
Have a great day!
:-)
09-28-2017 01:24 AM
Hello
I would check the prefixes your advertising:
The ASR isnt advertsing the correct loopback address
network 10.80.84.248 0.0.0.0 area 0 <--should be network 10.80.84.245 0.0.0.0 area 0
3850 isnt advertisning its gig1/1/1 network<-- should be 10.80.80.232 0.0.0.3 area 0
res
Paul
04-05-2018 08:55 PM
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