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routers ospf

mikey250
mikey250 asked
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Last Modified: 2012-05-06
- Ive configured an ospf network
- Ive added Loopback addresses
- Ive added 3 different Areas & one of them is the Transit router
- ive added a virtual statement on 2 of my routers out of 3.
1. im not sure if Im seeing what i should see when typing: "sh ip route" after virtual statements have been entered?  I could be seeing the correct output and just wanted to confirm!!
2. when I do a "show ip ospf virtual-links, im only seeing part of what I should see?
3. when I type: ping 192.168.224.2 from my sanjose1 router it is saying mismatch, why?
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Don JohnstonInstructor
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Top Expert 2015

Commented:
Without seeing the topology, the configs, and the output in question, it's impossible to say.

Author

Commented:
configs are attached.  i know its something simple but I cant figure out what it is.
auckland.TXT
sanjose1.TXT
singapore.TXT

Author

Commented:
ive attached debug file.
debug.TXT
Instructor
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Top Expert 2015
Commented:
The virtual link needs to be between SanJose and Auckland using their router ID's.

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00801ec9ee.shtml

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Author

Commented:
i will have to setup your url and go through that.  I sort of get you but in my mind as the singapore router is in the middle I thought or at least this should work even if not the best way to do it.  to have a virtual link on sanjose1 linking to singapore. and as auckland is already linked with singapore, this would bridge the gap.
Don JohnstonInstructor
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Top Expert 2015

Commented:
A virtual link is between two routers in different areas. SanJose and Singapore have interfaces in a common area.

Author

Commented:
hi donjohnston,

ive setup that url you sent me regarding virtual links.  One thing though Im only using serial connections although the example you sent me had atm as a connection, although I dont think this will make a difference for what im trying to do.

1. Why am I getting a mismatch as Ive double checked the configs and still cannot find the issue, saying that this was one of the same problems I had on my own config no matter what router the "virtual link" command went on?

ive attached configs if your able to look at them.
router1.TXT
router3.TXT
Don JohnstonInstructor
CERTIFIED EXPERT
Top Expert 2015

Commented:
For some reason, it looks like Router 1's E0 interface isn't in area 0.

Can you post a "show ip ospf int e0" from Router 1.

Author

Commented:
but the details are in the config.
I can also ping every address on all 3 routers
ive attached screenshots for you to see
note:  the only thing I havent added to this is the costs.

router1.TXT
router3.TXT

Author

Commented:
show ip ospf int e0 attached.
router1a.TXT

Author

Commented:
I suppose I will have to take it as that as I understand the basic of virtual links now as far as this lab goes, although would have been good to look at the sh ip ospf instances to get a better picture.

Author

Commented:
although ive copied the url ospf network.  i was still getting the ip address mismatch although everything was still up and pingable.  so im assuming that there may well be something wrong with my routers or ios.  maybe i need to install it again.  so as a result when i did "sh ip route" i did not see everything i was supposed to, which could be because of this mismatch.  so im content that the other scenario i was given is correct and is another issue.
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