Configuring the router and switch for dhcp – Covad 6812D-MGCP User Manual
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Configuring the Router and Switch for DHCP
The appropriate CPE router and switch configurations must be applied to support DHCP. These steps
must be completed by Covad prior to configuring the phones.
As part of router turn-up, add in configuration for DHCP support
In addition to the standard configuration applied to the CPE router, the following items
must be configured to support DHCP for the phones. No other DHCP options should be
added.
service dhcp
no ip dhcp conflict logging
ip dhcp excluded-address x.x.x.a
Å x.x.x.a is the phone default gateway or
Ethernet interface address
ip dhcp pool phone
network x.x.x.x 255.255.255.y
Å x.x.x.x 255.255.255.y is the phone
network
default-router x.x.x.a
Å x.x.x.a is the phone default gateway
or Ethernet interface address
option 66 ascii “TFTP server”
Å 64.2.21.251 (SNVL), 64.2.21.45
(SNJS), 68.165.105.181 (SNVL2) or
72.245.184.75 (DC) is the address of
the TFTP server for this application
lease 7
If you do not know which TFTP server to use, please check with Covad
Provisioning or Support.
On Layer 3 switches, such as the Cisco Catalyst 3560, DHCP must be disabled
no service dhcp