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New Member

Dial-In DHCP pool


out branch office have a NT server handing out IP addresses to the local PC's. We also got 2600 at those sites with NM-8AM cards. When users dial into the router, I would like to hand out IP addresses to them.

Hence I created a DHCP pool called dialin-users, however, sometime the router also hands out IP addresses to the LAN machines. Is there any way I can tell the router only to hand out IP addresses to the dialin users not to any DHCP request coming on on the ethernet port?



New Member

Re: Dial-In DHCP pool

Here is a sample of how we did the same thing with our AS5300's.

interface Group-Async1

ip unnumbered Ethernet0

encapsulation ppp

async mode interactive

peer default ip address pool default

ppp authentication pap

group-range 1 108


ip local pool default

The interface Group-Async1 command groups all your modems together.

The group-range command 1-108 takes all of our 108 modems and applies them to this interface.

The peer default ip address pool default command telles the interface to pull an address from the ip pool.

The ip local pool default command creates the ip pool.

These steps only allow the IP pool to issue addresses to dial up connections. If I was to hook up a PC on the same segment as our RAS, it would not pull an IP address from the router.

New Member

Re: Dial-In DHCP pool

OK cool. thanks for that. But how do I give the dial-in clients a DNS server? I only seem to be able to hand out IP addresses with the local pool command?

New Member

Re: Dial-In DHCP pool

OK, I just sussed it out. Allocate other properties suc as DNS server etc wiht the async-bootp command.

Works a treat. Thanks guys!