Got lots of good suggestions. Tried adding "spanning-tree portfast trunk" and that definitely helps the the AP get the correct IP address from the native VLAN, but as soon as i add in a second AP, i get a spanning-tree loop and one of the ports gets disabled. If i remove the command above, then i get random IP addresses from different VLANs.
---- ---- ---- ---- Chris Gotstein, Sr Network Engineer, UP Logon/Computer Connection UP http://uplogon.com | +1 906 774 4847 | [email protected] On 4/30/2010 8:42 AM, Chris Gotstein wrote: > According to HP, the dhcp request is untagged. I will try running a > sniffer to see what's going on. > > The controller is acting as the DHCP server on vlan 3 just for the APs. > I had also tried using the MS DHCP server for the APs, but that had the > same results as well. > > On 4/30/2010 6:04 AM, Arie Vayner (avayner) wrote: >> Chris, >> >> To my understanding, this should work... >> Are you sure the AP is sending the DHCP request untagged? >> BTW, you mentioned the AP is acting as DHCP *server* - is it server or >> client? >> >> I would suggest that you just SPAN the port of the AP and put a sniffer >> on it so you can see what is going on during the boot up process. >> >> Arie >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Chris Gotstein >> Sent: Friday, April 30, 2010 00:33 >> To: [email protected] >> Subject: [c-nsp] Native VLAN and DHCP >> >> I've got a WS-C3560G-24TS switch doing L3. We are running multiple >> VLANs, each VLAN has it's own subnet, and the clients are getting their >> IP addresses from a MS DHCP server using ip helper-address command for >> each VLAN interface. >> >> Problem: >> >> Setting up HP access points and controller. Want to use VLAN 3 as the >> native VLAN for the HP APs. Port that the AP is connected to is >> configured as the following: >> >> interface GigabitEthernet0/13 >> description Connect to HP AP >> switchport trunk encapsulation dot1q >> switchport trunk native vlan 3 >> switchport trunk allowed vlan 3,10,20,25,100 >> switchport mode trunk >> >> The controller is acting as the DHCP server, which is also on VLAN 3. >> But when the AP boots up, it takes a long time for it to get an IP >> address, and when it does finally get one, it's from a random VLAN of >> the listed allowed VLANs, and not from VLAN 3. I'm not sure if i'm >> missing something or if i'm just unable to use the native vlan command >> in this fashion. Any advice? Thanks. >> > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
