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2948G-L3 DHCP through VLANs

 
 
David Hopper
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      10-15-2003
Hi all,

I have a fairly basic setup, but I've run down too many rabbit holes to
count. Each 12-port block on a 2948G-L3 is a bridge, with a bvi
attached thusly to each:

bvi 1 bvi 2 bvi 3 bvi 4
10.10.0.1/22 10.10.4.1/22 10.10.8.1/22 10.10.12.1/22
bridge-group 1 bridge-group 2 bridge-group 3 bridge-group 4

Each port is unnumbered, with the exception of my 'uplink' port 48.
Most internal devices on each bridge are unmanaged Netgear switches. My
DHCP server, transparent (squid) proxy and external gateway (one box,
two ints) sits currently on port 48 at 192.168.1.2 (not specified as
part of a bridge). I've specified 'ip helper 192.168.1.2' on each
interface, and also on each bvi just for giggles.

Currently the DHCP request header for a client on any VLAN is getting
stamped with the port 48 IP, which makes the request fail on the DHCP
server. How can I specify the VLANS such that the incoming DHCP request
header has the correct bvi subnet?

Thanks much!
Dave



 
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Hansang Bae
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Posts: n/a
 
      10-16-2003
In article <FQ3jb.97423$(E-Mail Removed)2.webusenet.com>,
http://www.velocityreviews.com/forums/(E-Mail Removed) says...
> Hi all,
>
> I have a fairly basic setup, but I've run down too many rabbit holes to
> count. Each 12-port block on a 2948G-L3 is a bridge, with a bvi
> attached thusly to each:
>
> bvi 1 bvi 2 bvi 3 bvi 4
> 10.10.0.1/22 10.10.4.1/22 10.10.8.1/22 10.10.12.1/22
> bridge-group 1 bridge-group 2 bridge-group 3 bridge-group 4
>
> Each port is unnumbered, with the exception of my 'uplink' port 48.
> Most internal devices on each bridge are unmanaged Netgear switches. My
> DHCP server, transparent (squid) proxy and external gateway (one box,
> two ints) sits currently on port 48 at 192.168.1.2 (not specified as
> part of a bridge). I've specified 'ip helper 192.168.1.2' on each
> interface, and also on each bvi just for giggles.
>
> Currently the DHCP request header for a client on any VLAN is getting
> stamped with the port 48 IP, which makes the request fail on the DHCP
> server. How can I specify the VLANS such that the incoming DHCP request
> header has the correct bvi subnet?



IP HELPER under BVI is the correct answer. If that's not working, it
might be a bug.


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hsb

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