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--- dhcp [2024/03/14 22:06]
114.119.141.71 old revision restored (2017/05/03 00:20)
+++ dhcp [2024/05/05 02:05] (current)
216.244.66.196 old revision restored (2023/12/30 16:47)
@@ Line 1: / Line 1: @@
 =====DHCP=====
+Use DHCP to address automatic IP assignment within a network.
 ====Configuration====
 Below is the configuration for DHCP in Cisco's IOS.
@@ Line 14: / Line 16: @@
 ====DHCP Relay====
 Relays are configured with **''ip helper-address x.x.x.x''** to specify which address to forward received DHCP requests. When our RTR forwards a DHCP request out via Relay, it does so with the **''SOURCE ADDRESS''** of the ''**INTERFACE**'' the ''**HELPER-ADDRESS**'' command was configured on. When this happens, the DHCP server can look at the ''**SOURCE ADDR**'' of the packet, and know exactly which scope to lease an address from - the same network that source resides in, ofc.
-The helper address is configured on the interface connected to the subnet which does not contain the DHCP server.
-<code>
-interface FastEthernet0/1
- ip address 172.16.0.1 255.255.255.0
- ip helper-address 192.168.1.1
- duplex auto
- speed auto
-end
-</code>
 ====Show Commands====
@@ Line 73: / Line 64: @@
 ===Pool Stats===
-Note that ''**excluded**'' address ranges are not deducted from the ''**Total addresses**'' field in the output.
 <code>
 R1#sh ip dhcp pool

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