DHCP Stateful Caching

kfarrington · ‎10-02-2003

Guys, Have a very simple DHCP config for our network lab so all our test PCs can source addresses.

Config on Router10

ip dhcp excluded-address 10.10.10.1 10.10.10.99

ip dhcp excluded-address 10.10.10.200 10.10.10.255

!

ip dhcp pool 10net

network 10.10.10.0 255.255.255.0

domain-name testlabuk.com

dns-server 10.10.20.1

default-router 10.10.10.10

!

interface Ethernet0

ip address 10.10.10.10 255.255.255.0

!

So, two questions.

If i switch the route off, all my bindings disapear and what happens if I want to add another router to my LAN with an HSRP addr ? one router would assign all adresses, wot about failover?

Is there anything like MSDP for DHCP?

I know, just put in a real DHCP server I hear you say :))

Many thx,

Ken

didyap · ‎10-08-2003

Using HSRP only one router will be active at one point of time. HSRP uses a virtual ip address which is used by both the active and standy routers, so there will be no problem at the time of failover.

The ip helper-address can be used to point the devices in the LAN to the DHCP server. There are no known probelms between HSRP and DHCP.