I will also suggest 'portfast'. We had the exact same problem about
three years ago. Also, maybe check ip helper addresses are correct?
Santosh Koshy wrote:
>
> This is exactly what happened to me when i installed my 5509 switch.... And
> i am also using win2k for DHCP.. The fix is to enable "portfast" on the
> switch ports.. Only enable them on the ports that are attached to end
> stations (not to other bridges, switches or routers)
>
> Here is an URL that come in handy....
> http://www.cisco.com/warp/customer/473/12.html
>
> tell me how it went...
>
> Santosh
>
> "max hill" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Have not seen this one, any feedback would be great!
> >
> > Topology:
> > Have 2-5509/2sups/2RSFC
> > 1-remote building with 5509 (single fiber between)
> > 1-corp building with 5509
> >
> > 3548/24 for both locations for end user wire rooms
> >
> > Running 802.1Q, trunking/etherchannels between
> > 3500 and 5509. Trunking between 5509 to 5509.
> >
> > On the 3500 assigning users of ports to vlan.
> > So if Joe in acct is on port 1, he goes to acct vlan.
> >
> > Problem:
> > When took users to (new network) new 3500, having
> > major DHCP problems. It is having major problems
> > obtaining DHCP IP addresses. For exp. some in vlan 20
> > get ip, while others in 20 dont. Took my laptop and
> > assigned to different vlans. Could get ip for vlan 15,
> > but not vlan 10. (assigned prot to both
> > vlans at the time trying to obtain an ip).
> >
> > There is not a constant or regular pattern to this,
> > very various in obtaining ip. So had to give statics
> > now.Using Win2000 for DHCP.
> >
> > Also, while doing debug arp found some interesting
> > behavior:0050.0488.6c20 000 0.0000.0000 wrong cable,
> > interface Vlan9,
> >
> > DUPADDR: Duplicate address xxxxon Vlan182,
> >
> > IP ARP: creating incomplete entry for IP address
> >
> > Has anyone seen this type of behavior? I am at odds,
> > any suggestion and feedback!
> >
> > thanks
> > max
> > [EMAIL PROTECTED]
> >
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