group-async int. w dhcp pool only assigns 1 address

[jordi.ventura]

We have a group-async1 interface grouping 8 async line modems. We use a dhcp-pool to dinamically assign ip addresses to customers.

Problem: It seems that it assigns only one address. It fails when second customers tries to get in.

Any idea ?

Config is:

int loopback1

ip address 10.10.1.129 255.255.255.128

int group-async1

ip unnumbered loopback1

...

peer default ip address dhcp-pool name

group-range 33 40

ip dhcp pool name

network 10.10.1.192 255.255.255.192

default-router 10.10.1.129

[mwall]

I am not a DHCP expert, but I have one attempt at a fix.

Set your dhcp network to the same subnet as your loopback address, 255.255.255.128

or....set your loopback network to the same network as your dhcp pool.

255.255.255.192

Let me know if you have any luck with that,

Mike

[makchitale]

You need to make the following configuration changes:

conf t

interface group 1

no peer default ip address dhcp-pool name

peer default ip address pool name

exit

no ip dhcp pool name

ip local pool name x.x.x.x x.x.x.y

router(config-if)#peer default ip address ?

dhcp <-- Use DHCP proxy client mechanism to allocate a peer IP address

dhcp-pool <-- Use local DHCP pools to allocate a peer IP address

pool <-- Use IP pool mechanism to allocate a peer IP address

NOTE: the "dhcp-pool" option is used to retrieves an IP address from an on-demand address pool. This option only supports remote access (PPP) sessions into MPLS VPNs.

We need to use just the "pool" option here.

Thanks, Mak