02-05-2012 07:08 AM - edited 03-07-2019 04:44 AM
Hi,
I have this topology:
I can configure a dhcp pool in the Router B, this dhcp pool is for the VLANC 10.0.0.0, this work?
Configuration:
Router A
interface GigabitEthernet0/1
description LANs
interface GigabitEthernet0/1.10
description VLANB
ip address 172.16.0.1 255.255.255.0
interface GigabitEthernet0/1.20
description VLANC
ip address 10.0.0.1 255.255.255.0
ip helper-addres <192.168.0.2 - ip address of the RouterB>
interface GigabitEthernet0/1.30
description VLANA
ip address 192.168.0.1 255.255.255.0
Note : the only ip address of the RouterB is the 192.168.0.2.
RouterB:
interface GigabitEthernet0/1
ip address 192.168.0.2 255.255.255.0
exit
i
ip route 0.0.0.0 0.0.0.0 192.168.0.1
ip dhcp excluded-address 10.0.0.1 10.0.0.10
ip dhcp pool VlanC
network 10.0.0.0 255.255.255.0
default-router 10.0.0.1
exit
this configuration of the DHCP pool in the Router B, will work?
02-05-2012 09:23 AM
Hi,
first on router A you need to configure the encapsulation and vlan first before putting an IP address so
Router A
interface GigabitEthernet0/1
description LANs
interface GigabitEthernet0/1.10
description VLANB
encap dot1q 10
ip address 172.16.0.1 255.255.255.0
interface GigabitEthernet0/1.20
description VLANC
encap dot1q 20
ip address 10.0.0.1 255.255.255.
interface GigabitEthernet0/1.30
description VLANA
encap dot1q 1 30
ip address 192.168.0.1 255.255.255.0
Otherwise the config should work.
Regards.
Alain.
02-05-2012 10:37 AM
Hi,
Your configuration looks fine to me. Seems you got a switch in between. As alian point out, if you want to use sub-interfaces on routerA. You need to configure 802.1q.
HTH
Toshi
Sent from Cisco Technical Support iPhone App
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