Question

ospfd openbsd not distributing routes

Asked by: loniadmin

Hello,

I am running ospfd on openbsd 4.5 and I am having issues distributing routes.  I can see all the routes on my network fine from my obsd router when I run:

ospfctl show database router

however, when I go to my other ospf routers which are cisco and juniper I cannot see the interface of the obsd router.

I am using redistribute connected in my conf file, but I would like to change to specify what networks I am distributing.  If I send out all connected it will cause issues. The "redistribute prefix [set ...]" looks promising, but I have not been able to find any examples for "prefix".

Thanks!



ospfd.conf:

router-id 10.9.220.1    
redistribute connected

# areas
area 0.0.0.0 {
        interface nfe0 {
                hello-interval 1
                auth-type none
        }
       interface lo1 {
                passive
       }

 ospfctl show neighbor        
ID              Pri State        DeadTime Address         Iface     Uptime
10.9.10.1       1   FULL/BCKUP   00:00:39 10.5.50.1       nfe0      00:08:01

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Asked On
2009-05-14 at 12:03:49ID24409809
Tags

ospfd.conf ospfctl ospf

Topics

OpenBSD

,

Linux

,

Network Routers

,

Unix Networking

,

Linux Networking

Participating Experts
2
Points
0
Comments
12

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Answers

 

by: loniadminPosted on 2009-05-14 at 13:34:29ID: 24389416

I was finally able to find someone who hinted at the proper redistribution:

ospfd.conf
 redistribute 10.5.50.0/30
 redistribute 10.9.220.1/32

However, it still is not being properly distributed to the network.

# ospfctl show fib
flags: * = valid, O = OSPF, C = Connected, S = Static
Flags  Prio Destination          Nexthop          
*S        8 0.0.0.0/0            128.97.131.1
 C        4 10.0.132.0/24        link#4
*C        4 10.5.50.0/30         link#1
*O       32 10.5.50.0/30         10.5.50.2
 C        4 10.5.51.0/30         link#2
*         4 10.9.220.1/32        10.9.220.1
*S        8 127.0.0.0/8          127.0.0.1
*C        0 127.0.0.1/8          link#0
*         4 127.0.0.1/32         127.0.0.1
*C        4 128.XXX.XXX.0/24      link#3
*S        8 224.0.0.0/4          127.0.0.1

 

by: gheistPosted on 2009-05-15 at 01:52:04ID: 24393340

other end has to do OSPF also.
traffic dump is of help with wireshark or ms monitor network.

 

by: loniadminPosted on 2009-05-15 at 10:33:59ID: 24398044

Hello gheist.

The other end is configured for OSPF.  As you can see from my original post the show neighbor cmd shows the connected router.  The issue I am having is flooding networks from my obsd router to the rest of my network.

Not sure how a traffic dump would help on this.  It is a configuration flaw that I am having.

 

by: giltjrPosted on 2009-05-15 at 17:25:34ID: 24400600

Is the other OSPF router configured with a hello interval of 1 second?  Seem a bit low to me, default is 10.

 

by: loniadminPosted on 2009-05-18 at 10:12:38ID: 24414135

The issue turned out to be the line: " ip ospf network point-to-point" on the Cisco interface.  The link is a point to point link, but I guess since ospfd does not have that option in its config it results in weird behavior.  I removed it and everything works now.

 

by: gheistPosted on 2009-05-19 at 00:49:23ID: 24419392

Refused to diagnose

 

by: gheistPosted on 2009-05-19 at 00:49:46ID: 24419393

Refused diagnostic info.

 

by: loniadminPosted on 2009-05-19 at 10:24:45ID: 24424310

Specifically to gheist:

I apologize for being terse, but if you attempt to answer a question without thinking about the problem, or without being knowledgable about the area of interest, many users (like myself) will immediately notice that.

I said "I can see all the routes on my network fine from my obsd router when I run: "ospfctl show database router".  Your first reply was to check is ospf was enabled on the other side.  The command implies that the protocol is up and running between the two end points.

You then comment that wireshark is helpful for diagnosing issues.  Really?  I'm not sure if this is a breakdown of communication or a pure lack of respect for the asker of the question.  If you want to see tcpdump captures, then ask.  

Don't raise an objection because a user doesn't provide diagnostic information that you didn't actually ask for (again, breakdown of communication).  I've flagged the question for review, and will continue to do so every time you respond to a question of mine without demonstrative expertise in the subject.

 

by: gheistPosted on 2009-05-19 at 12:40:42ID: 24425779

Normally one traces lowlevel issues from traffic dump, not by trying to make guesses with obscure options. Have your points back if you prefer so.

 

by: loniadminPosted on 2009-05-19 at 14:01:59ID: 24426634

I'd actually just prefer you not participate in our questions in the future.  Let somebody else answer the question that perhaps has more experience in the specific area.  I know you are very helpful to many users on Experts Exchange, but so far have not been helpful to us.

 

by: loniadminPosted on 2009-05-26 at 10:45:34ID: 24475615

We have one admin (that would be me) that uses Experts Exchange.  As I'm sure you already understand, most questions - especially in the networking arena - are part of a project that affects more than a single person, or else the concept of networking wouldn't make much since.  

I have contacted the person responsible for corporate accounts as you suggested, however I have done so to discuss why our company will probably not purchase a corporate account, as our experiences with the moderators on the site were less than helpful.  We had this premium account so I could try out the service before purchasing a larger account for the whole organization.

20120131-EE-VQP-002

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