Posted on July 6, 2017 12:56 am
 |  Asked by Alex samad
 |  614 views
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Hi

 

I have OSPF setup on my arista switches

interface Vlan9

   description MAN interface

   ip address 10.3.1.6/24

   ip ospf dead-interval 120

   ip ospf priority 200

   ip ospf authentication message-digest

   ip ospf message-digest-key 1 md5 7 xxxxxxx

!

router ospf 1

   router-id 10.3.2.2

   network 10.3.190/24 area 0.0.0.0

   network 10.3.2.2/32 area 10.3.0.0

   max-lsa 12000

   log-adjacency-changes detail

 

What I am seeing on the PA is session time outs and aged session around OSPF from my 2 arista’s.

 

my aristas are DR & BDR, I don’t get these timeout with any of the other OSPF devices on the network.

 

are there any know issues with interop between arista and PA’s

 

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Posted by Josh Rivers Rivers
Answered on July 6, 2017 1:15 am

Alex,

Can you share your OSPF Config and Firewall Policy for the port(s) you are using on your PA?

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Posted by joe-d
Answered on July 7, 2017 2:51 pm

Alex,

 

I did a quick copy/paste of your config above into a lab switch and assumed 10.3.2.2/32  to be loopack0.

*** note ***

this has a typo:     network 10.3.190/24 area 0.0.0.0

  I made it to be 10.3.190.0/24 area 0

 

*** /note ***

I issued the CLI

 

show ip ospf interface brief

mt550…14:43:45#show ip os interface brief 

   Interface    PID   VRF        Area            IP Address         Cost  State      Nbrs

   Loopback0    1     default    10.3.0.0        10.3.2.2           10    Waiting    0

 

confirming my suspicion, you don’t have a network statement applicable to vlan9 .  I then added the necessary network statement:

 

mt550…14:43:51#conf t

mt550…14:44:48(config)#router ospf 1

mt550…14:44:52(config-router-ospf)#network 10.3.1.6/24 area 0

mt550…14:44:57(config-router-ospf)#end

mt550…14:44:58#show ip os interface brief

   Interface    PID   VRF        Area            IP Address         Cost  State      Nbrs

   Vlan9        1     default    0.0.0.0         10.3.1.6           10    Waiting    0

   Loopback0    1     default    10.3.0.0        10.3.2.2           10    DR         0

mt550…14:45:00#

 

and see the vlan9 interface now doing OSPF.  Please send the applicable PA OSPF configs && FW policy.

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