RE: OT-switch MAC addresses

From: Joseph Eleazar (joseph_eleazar@hotmail.com)
Date: Mon Jan 16 2006 - 01:35:20 GMT-3


Mike,

Assuming that all ports on the 2950 and 3550 are on the same vlan, use vlan
1 for simplicity, then:

1. Make sure that the interface vlan 1 on both switches are not set up for
dhcp.
2. Make sure that the trunk between the switches are passing vlan 1.
3. Make sure that the ethernet port on the 2620 that connects to the switch
is configured for dhcp.

With that setup and the cable modem connected to the 2950, the the 2620 on
the 3550 should grab an IP address, that should leave 2 addresses for 2 more
devices that connect to either switch to grab a dhcp address from the cable
modem.

Joe

>From: "Mike O" <mikeeo@email.msn.com>
>Reply-To: "Mike O" <mikeeo@email.msn.com>
>To: <ccielab@groupstudy.com>
>Subject: OT-switch MAC addresses
>Date: Sun, 15 Jan 2006 13:20:51 -0500
>
>My ISP (Comcast) assigns IP addresses per MAC. And my cable modem allows 3
>MAC addresses to be registered. My problem is I want my 2620 in my lab to
>be assigned an address but when I plug the cable modem into my 2950 it
>picks of the MAC of the switch port and doesn't let the 2620 register. Is
>there anyway to disable the mac address of the port?
>
>My 2620 is plugged into my 3550 which is trunked to the 2950 and VLAN is
>created to carry internet traffic to the cable modem, but like I said it
>picks up the switchport MAC instead.
>
>Thanks,
>
>Mike
>
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