Switch User Manual

IP routing 41

If a DHCP client is connected to a routable interface, to conﬁgure DHCP

requests to be sent to up to 512 different routable interfaces or 512 different

server IP addresses, enable DHCP on the client (agent address) and then

enable DHCP from the client to each of the interfaces or IP addresses

(server addresses).

In the example shown in "Multiple BootP/DHCP servers" (page 41),two

DHCP servers are located on two different subnets. To conﬁgure the

Nortel Ethernet Routing Switch 5500 Series to forward the copies of the

BootP/DHCP packets from the end station to both servers, specify the switch

(10.10.1.254) as the agent address. Then enable DHCP to each of the

DHCP servers by entering 10.10.2.1 and 10.10.3.1 as the server addresses.

Multiple BootP/DHCP servers

Setting DHCP

To set DHCP, take the following steps:

Step Action

1 Enable IP routing on the Nortel Ethernet Routing Switch 5500 Series

and on the target VLAN interface.

Enable DHCP globally.

Note: DHCP is enabled by default.

Set the DHCP forwarding paths, using the VLAN IP as the starting

point, or agent IP.

Set the mode for each DHCP forwarding path.

Enable DHCP for the speciﬁc VLAN.

Enable the DHCP broadcast message for the speciﬁc VLAN.

—End—

Nortel Ethernet Routing Switch 5500 Series

Conﬁguration-IP Routing Protocols

NN47200-503 03.01 Standard

5.1 27 August 2007