[c-nsp] Embeded Packet Capture for DHCP Troubleshooting

[Heath Jones]

I just re-read and saw it was the 2601 as the dhcp server.

What problem are you trying to solve?

On 21 September 2010 16:10, Heath Jones <hj1980 at gmail.com> wrote:

> Hi Jeff - which device is performing the dhcp server function and what
> problem are you actually having?
>
>
>
> On 21 September 2010 15:46, Jeff Wojciechowski <
> Jeff.Wojciechowski at midlandpaper.com> wrote:
>
>> All:
>>
>> I would like to use Embedded Packet Capture at a remote site to
>> troubleshoot IOS DHCP at a remote site.
>>
>> (referencing
>> http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_packet_capture_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1060070
>> )
>>
>> The concept looks pretty straightforward but since DHCP negotiation isn't
>> IP - I am having trouble with building the access list to determine what
>> traffic to capture.
>>
>> The device I would like to perform the capture on is a 2801 and that is
>> the device serving DHCP to clients at that site.
>>
>> Utilization on that router is pretty low so if I *had* to capture all
>> traffic on F0/0 and dump it via TFTP to the fileserver at the site - I think
>> that might be a viable option? But the fileserver is connected to the switch
>> that connected to F0/0 that I want to perform the capture on.
>>
>> Regular DHCP debugs only show that 2 devices are continually offered IPs
>> but then apparently keep re-requesting them. (So maybe I am barking up the
>> wrong tree here.)
>>
>> Diagram:
>>
>> WAN----Serial-2801-F0/0----Switch------DHCP Clients and Fileserver
>>
>> Any and all hints would be greatly appreciated.
>>
>> Thanks much,
>>
>> Jeff Wojciechowski
>> LAN, WAN and Telephony Administrator
>> Midland Paper Company
>> 101 E Palatine Rd
>> Wheeling, IL 60090
>> * tel: 847.777.2829
>> * fax: 847.403.6829
>> e-mail: jeff.wojciechowski at midlandpaper.com<mailto:
>> jeff.wojciechowski at midlandpaper.com>
>> http://www.midlandpaper.com
>>
>>
>>
>>
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>