[cisco-voip] how to take wireshark trace between two routers.

[anand]

Hi Mike,
Thanks for the reply.I did went through this page and did monitor commands
as suggested on this page.I can see packets in wireshark with in the
router.router---switch---phone.If i call from another phone to this phone i
can see the rtp between router and phone and between phone and router.

My question is I am not able to capture packets on other router which has a
phone directly connected to it.

I cannot see packets between the routers.Do I need to make some changes on
routers so that we can see packet flow between routers .

On Thu, Oct 1, 2009 at 1:35 PM, Norton, Mike <mikenorton at pwsd76.ab.ca>wrote:

>  Anand,
>
>
>
> If you are new to configuring SPAN ports then I suggest starting with this
> article which turned up at the top of some quick Googlage:
>
>
>
> Catalyst Switched Port Analyzer (SPAN) Configuration Example
>
>
> http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c612.shtml
>
>
>
> Also please note that I did not indicate a willingness to take this
> discussion off-list. I’m re-adding the list to this thread, please keep it
> that way.
>
>
>
> --
>
> Mike Norton
>
> I.T. Support
>
> Peace Wapiti School Division No. 76
>
> Helpdesk: 780-831-3080
>
> Direct: 780-831-3076
>
>
>
>
>
> *From:* anand [mailto:anand.eee at gmail.com]
> *Sent:* October-01-09 12:24 PM
> *To:* Norton, Mike
>
> *Subject:* Re: [cisco-voip] how to take wireshark trace between two
> routers.
>
>
>
> Hi MIke,
>
>
>
> I have 3560 catalyst switch.How can i make it to act as a SPAN PORT.
>
> On Thu, Oct 1, 2009 at 1:22 PM, anand <anand.eee at gmail.com> wrote:
>
> Hi Mike ,
>
>
>
> I have connected the two routers with a cross cable on their ethernet
> interfaces.
>
>
>
> On Thu, Oct 1, 2009 at 1:19 PM, Norton, Mike <mikenorton at pwsd76.ab.ca>
> wrote:
>
> You will need to get your Wireshark machine connected in between the two
> routers somehow. Since you didn’t give any information about how the two
> routers are connected to each other, I can only offer guesses on how you
> might accomplish that. If they are connected straight to each other with
> Ethernet, then put a hub (or a switch with a SPAN port) in between or use an
> Ethernet tap. If they are connected to each other with something other than
> direct Ethernet, then I’m guessing you’re SOL but at the very least you
> would need to provide us with information about the connection.
>
>
>
> --
>
> Mike Norton
>
> I.T. Support
>
> Peace Wapiti School Division No. 76
>
> Helpdesk: 780-831-3080
>
> Direct: 780-831-3076
>
>
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *anand
> *Sent:* October-01-09 11:53 AM
> *To:* cisco-voip at puck.nether.net
> *Subject:* Re: [cisco-voip] how to take wireshark trace between two
> routers.
>
>
>
> Hi
>
> I have two routers .On 1 router i have router---switch--phone(1000)
>
> second router   router----phone(3000)
>
> i want take wireshark trace.I was able to take the trace when i called from
> 1000-3000 by connecting the pc to the switch.
>
> In wireshark i can see information happening on first router but i cannot
> see any information about second router nor the phone.
>
> My question is how to see the packets between the routers using wireshark
> trace.
>
>
>
> thanks,
>
> anand.
>
>
>
>
>
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