[cisco-voip] trying to setup dhcp scope for iphones on dc

[Simon, Bill]

Multiple subnets on a single router interface will confuse DHCP unless you
specify that they are "shared subnets" on the DHCP server.  Sniff the wire
at your DHCP server and see if any DHCP requests are coming in from the
phones.  If so, and they're being routed there by way of an ip
helper-address, is the gateway address they're coming from within your phone
scope?
 
I don't know Windows DHCP but it sounds like the Windows equivalent of a
shared subnet config is what's needed.
 
Bill

 
 


  _____  

From: James Grace [mailto:jgrace at digitelusa.net] 
Sent: Sunday, March 26, 2006 10:16 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] trying to setup dhcp scope for iphones on dc



Is there trick to get the ip phone to grab a ip address from the dhcp
server.  We have a dc which is a dhcp server for our data.  And we are
configuring another scope for the ip phones.  But phones are not grabing a
ip.  We have the ip helper config under the voice vlan int.   what else are
we missing.

 

James D. Grace 

CCNP CCNA MCSE MCDBA

Sr. System Engineer / Professional Svc.

Digitel Corporation

 

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