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New Member

my router can not get the IP from DHCP server

conf t

int e 0

ip addr dhcp

no shut

DHCP server is Sygate Home Server

the error information is:

03:01:45: %IP-4-CLASS: Bad IP address and mask 0.0.0.0/0 in class_resolve()

2 days ago, i can get IP from sygate, but today not, why?

thanks

4 REPLIES
New Member

Re: my router can not get the IP from DHCP server

I got it, just

no ip routing

New Member

Re: my router can not get the IP from DHCP server

but i still can not get the real IP from ISP

Anonymous
N/A

Re: my router can not get the IP from DHCP server

I have found that some ISP providers require the MAC address of the router before they will hand off an IP address. So this requires you to call them and give them the MAC address of the router and to put the following line into your interface config:

interface FastEthernet0/1 (or what interface you are using)

ip address dhcp client-id FastEthernet0/1

some time if you already have DHCP configured on the interface you will need to remove the DHCP configuration and verify that the router has released the IP address. Then you can reapply the configuration.

Good Luck, Terry

New Member

Re: my router can not get the IP from DHCP server

thanks,

i am confused about the router how to release IP from ISP

first, i clone the MAC(my NIC) to e0, and do,

conf t

int e 0

ip addr dhcp

mac-address xxxx.xxxx.xxxx

it still doesn't work

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