From: qwerts2@email.com
Date: Mon Sep 22 2003 - 10:23:52 GMT-3
Hello all,
Thanks again as always this group has provided more than enough information to assist others in their pursuit of Cisco oneness. lol
After seeing your posting Adam and Dmitry, I looked back through the "Cisco Lan Switching" book and on page 546 was exactly what you were talking about.
I will put a packet analyser between the 7960 and the switch to see why it did not talk through the switch and get its address. Based on the facts you have provided the phone should have gotten an address. Here are the key points.
1. Ports went "hot" when "interface vlan XX" was entered thereby activating said vlan and ports associated with the vlan. (Cat5000)
2. PC received an address and was able to reach the internet. (3524_2) port fa1
3. 7960 wasn't able to receive address from same dhcp server (3524_2) port fa24
4. Ports 1 and 24 on 3524_2 were in Vlan 50 and 51 respectively. Port 24 was entered as "switchport voice vlan 51". 3524_2 over Gig to 3524_1 and from there switch 3524_1 had another Gig port set to trunk dot1q and negotiated with remote 5000 to become trunk as well.
3524_2--Trunk--3524_1--Trunk--Cat5000--Access--7500--Access--DHCP server
This should have worked then. I will go through and look at how the frame is formed with "switchport voice vlan 51" versus "switchport access vlan 51" and see if there is anything there.
Original question, why did the 7960 not get an address... reference "Switch related question"
You have given me plenty to go on as I will now try and find the answer and post the solution back here. Thanks for all your help guys and gals.
Cheers,
Franklin Hall
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