EPISODE · Mar 23, 2009
IOS DHCP and NAT
from Cisco Hands On Training Podcast · host Darrell Root
IOS routers can act as DHCP clients and DHCP servers. They can also function as Network Address Translation (NAT) devices. In this video we show a demonstration using a 2621 as a DHCP client, server, and NAT translation device for my home network.It's important to understand that most IOS routers have relatively slow CPU's. An IOS router is fine as a DHCP server for a few dozen clients. But if you try to serve thousands of DHCP clients you are likely to fail and suffer an outage.IOS routers can also work as a network address translation devices. IOS NAT is "ok" but for real high capacity NAT (thousands of users) you want to use a device designed to handle high capacity NAT. PIXes, FWSMs, and ASA's are excellent NAT devices.
What this episode covers
IOS routers can act as DHCP clients and DHCP servers. They can also function as Network Address Translation (NAT) devices. In this video we show a demonstration using a 2621 as a DHCP client, server, and NAT translation device for my home network.It's important to understand that most IOS routers have relatively slow CPU's. An IOS router is fine as a DHCP server for a few dozen clients. But if you try to serve thousands of DHCP clients you are likely to fail and suffer an outage.IOS routers can also work as a network address translation devices. IOS NAT is "ok" but for real high capacity NAT (thousands of users) you want to use a device designed to handle high capacity NAT. PIXes, FWSMs, and ASA's are excellent NAT devices.
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IOS DHCP and NAT
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