From: Thounda Craig, Jr. (hjcgroup@xxxxxxxxxxxxxx)
Date: Tue Aug 28 2001 - 04:38:37 GMT-3
I think it's the following:
The IP phones are informed of the DHCP server (info. embedded in TFTP file)
and at startup, they look for the specified server defined in file for
service.
As for your laptop, it simply makes a DHCP-request (objectively) to which
both servers receive, only the VLAN 1 server is quicker w/DHCP response and
address allocation.
Someone will either validate this theory or shoot it completely down (smile)
but this is the concept of both processes <DHCP & IP Telephony). I think
....... Late hours and head full of cob-webs.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jeongwoo Park
Sent: Tuesday, August 28, 2001 2:49 AM
To: 'ccielab@groupstudy.com'
Subject: Weird Vlan problem !! (+ ip phone)
Hi all
Here is my issue.
Cisco 6509 switch has two vlans(vlan 1 and vlan 10)
Now, all the LAN users are hanging off the vlan 1 getting DHCP ip address
from the DHCP server that also belongs to vlan 1.
All the Cisco ip phones are hanging off the vlan 10, and the separate DHCP
server that assigns dynamic ip addresses to the ip phones also is hang off
the vlan 10.
Now my issue is that when I take my laptop pc and hook it up to vlan 10
where all ip phones are, I get ip address from the DHCP server at vlan 1.
It is so weird.
Is it just weird thing or I am missing something?
Have any of you guys encountered this problem before?
Thanks
JP
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