You gotta do the full monty sniffer trace. Do you see the complete 4 parts of the DHCP? Does the DHCP request include the Vender Code ID?
At least you get to practice your SPAN configuration. :) /Ralph 2011/10/31 Kristján Ólafur Eðvarðsson <[email protected]>: > Thanks, > > > > There was nothing special ordered but a AIR-LAP1142. > > > > But it still should get an dhcp ip no matter what options are working or > not. > > We did a workaround with putting up dhcp scopes on the 2960‘s. And it worked > > well. There is something I can´t put my finger on regarding the dhcp forward > > through the juniper. > > > > If I was on site, I would collect a sniffer trace with the PC dhcp request > that worked fine > > on the same port and the dhcp request from the AP that didn´t. But as I was > helping guys > > through the phone, that would have taken too much time. > > > > Intersting issue. I wonder there is something specific with Cisco AP´s and > Juniper even > > though no logic seems to apply. > > > > regards. Kristjan > > > > From: Leigh Jewell [mailto:[email protected]] > Sent: 31. október 2011 00:38 > To: Kristján Ólafur Eðvarðsson > Cc: [email protected] > Subject: Re: [OSL | CCIE_Wireless] 1142 dhcp issue > > > > > > When ordering the LWAPP AP you can selection to order with service provider > option which means it it configured to send the VCI with string > "-ServiceProvider" appended. If you AP's have been ordered with this option > your DHCP server may not have this VCI configured and hence why it doesn't > work. A quick debug of the DHCP request should show you if this is the > problem. > > 2011/10/30 Kristján Ólafur Eðvarðsson <[email protected]> > > I wonder if anyone has come accross this. > > Got this customer with 1142 he already patched to the ceiling. (which I > normally don´t reccmend if it can be tested first...) > DHCP for the AP is an issue. The ap simply does not get DHCP address from > server. A PC connected to the same port > gets an IP right away and can ping the controller immediately. > > the port is: > " > switchport mode access > switchport access vlan 30 > spanning-tree porfast > " > its a 2960 poe switch connected to vlan trunk to a juniper router. > > We tried to get one AP on console and manually did "lwapp ap ip address" > e.t.c and joned the controller manually > and everything worked of course. > > Has anyone heard of such issues with 1142 out of the box ?. This is over > layer3 and a Juniper router is forwarding the requests to a Cisco router > on a remote subnet who is acting as the dhcp server. > > I wonder if there is some bug with shipped APs and software. > > I change the AP to dhcp again from WLC after registration but it still > doesn´t get ip. Remember PC´s get an address with the same network > configuration on the same switchport if plugged in. > I read somewhere that vlan trunk and native vlan might help. But that didn´t > work either. No discovery sent no ip address, which is normal. > > anyone had this problem ? > > regards. Kristjan > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
