Re: Reachibility Issue.

Hi Ryan/Mark

Thanks a lot for the useful suggestion I would follow as per the guidelines
suggested.
I would make sure that i take care when redistributing routes at layer
three & step wise check my configuration.

In regards to the back bone reachibility during the initial testing if i am
not able to ping the backbone (BB1 or BB2) it would be a good idea as
suggested to create a SVI and ping the interface.

Is it possible if the interface media type is configured incorrectly which
could prevent you to ping the back bone interface ?? I tried a lot to check
on the site to get any command that could change the media Ethernet media
type .. but did not come across.. I am not sure how to go about with it.

Please as per convenience please reply.

Have a pleasant day!!

Regards

Sajid

On Sat, Sep 12, 2009 at 9:12 PM, Mark Matters <markccie_at_gmail.com> wrote:

> I start at the closest router and see if I can ping. If I can not then I
> look at the switches. If everything looks fine I slap a SVI on the switch
> the router/bb is connected to and see if I can ping to the SVI. Can I ping
> from the switch to the router. etc... When in doubt I diagram to see the
> path.
> I have found this occurs when I misconfigure something, ip address, access
> vlan, trunk ports, did I filter something and I forgot to add all the
> necessary info. . I use the same approach as Ryan does. Config, verify and
> move on.
>
>
> Check out INE's blog....troubleshooting articles
>
>
> On Sat, Sep 12, 2009 at 3:37 AM, sajid mavani <sajidmavani_at_gmail.com>wrote:
>
>> Hello Seniors,
>>
>> I had a query if in case you are not able to ping any of your routers or
>> Backbone interfaces what is the best possible troubleshooting steps.
>>
>> As per my understanding I would follow the following steps.
>>
>> 1) sh ip int b -- check the line protocol
>> 2) check duplex settings
>> 3) trace route check .
>> 4) check for any access-list configured that would block ping
>> reachibility.
>> 5) check proper access vlan passed in the given interface
>> 6) ?
>> 7) ?
>> 8) ?
>> 9) ?
>>
>> Also if possible let me know what would be the best approach to
>> troubleshoot any layer 2 & Layer 3 related problems if possible.
>>
>> Please let me know what would be the best approach, kindly reply to my
>> query
>> as per your convenience
>>
>> Have a pleasant day!!!
>>
>> Regards
>>
>> Sajid .
>>
>>
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Received on Sat Sep 12 2009 - 23:21:53 ART