Hi,
I encountered a problem whereby I have a Guest-LAN placed in the VRF and a guest tries to connect via a WLC which is configured as a dhcp-relay. The guest does not get any IP address assigned by DHCP. Apparently the DHCP server functionality does not work properly in the VRF when a DHCP-relay is used, see below debug. First I thought it might be a bug in 12.4(20)T3 on the 2851 and 3845 on which I encountered the issue but had the same result on a 3945E running 15.1 so it seems on all IOS's Problem does not occur when using autonomous APs. WITH THE VRF we see the following debug info: Dec 6 13:42:16.829 CET: DHCPD: Sending notification of DISCOVER: Dec 6 13:42:16.829 CET: DHCPD: htype 1 chaddr f87b.7a04.db2d Dec 6 13:42:16.829 CET: DHCPD: remote id 020a0000c0a80a02000300c0 Dec 6 13:42:16.829 CET: DHCPD: circuit id 00000000 Dec 6 13:42:16.829 CET: DHCPD: table id 1 = vrf VRF_Guest Dec 6 13:42:16.829 CET: DHCPD: DHCPDISCOVER received from client f87b.7a04.db2d through relay 192.168.9.193. Dec 6 13:42:16.829 CET: DHCPD: Seeing if there is an internally specified pool class: Dec 6 13:42:16.829 CET: DHCPD: htype 1 chaddr f87b.7a04.db2d Dec 6 13:42:16.829 CET: DHCPD: remote id 020a0000c0a80a02000300c0 Dec 6 13:42:16.829 CET: DHCPD: circuit id 00000000 Dec 6 13:42:16.829 CET: DHCPD: table id 1 = vrf VRF_Guest Dec 6 13:42:16.829 CET: DHCPD: there is no address pool for 192.168.9.193. WITHOUT THE VRF we see the following debug info: Dec 6 14:46:05.413 CET: DHCPD: Sending notification of DISCOVER: Dec 6 14:46:05.417 CET: DHCPD: htype 1 chaddr f87b.7a04.db2d Dec 6 14:46:05.417 CET: DHCPD: remote id 020a0000c0a80a02000300c0 Dec 6 14:46:05.417 CET: DHCPD: circuit id 00000000 Dec 6 14:46:05.417 CET: DHCPD: DHCPDISCOVER received from client f87b.7a04.db2d through relay 192.168.9.193. Dec 6 14:46:05.417 CET: DHCPD: Seeing if there is an internally specified pool class: Dec 6 14:46:05.417 CET: DHCPD: htype 1 chaddr f87b.7a04.db2d Dec 6 14:46:05.417 CET: DHCPD: remote id 020a0000c0a80a02000300c0 Dec 6 14:46:05.417 CET: DHCPD: circuit id 00000000 Dec 6 14:46:05.417 CET: DHCPD: Allocate an address without class information (192.168.8.0) Dec 6 14:46:07.417 CET: DHCPD: Adding binding to radix tree (192.168.8.3) Dec 6 14:46:07.417 CET: DHCPD: Adding binding to hash tree Dec 6 14:46:07.417 CET: DHCPD: assigned IP address 192.168.8.3 to client f87b.7a04.db2d. Dec 6 14:46:07.417 CET: DHCPD: Sending DHCPOFFER to client f87b.7a04.db2d (192.168.8.3). Config is straightforward. ip dhcp pool Guests vrf Guests import all network 192.168.8.0 255.255.252.0 default-router 192.168.10.1 dns-server 8.8.8.8 8.8.4.4 lease 0 4 ! interface Vlan192 description Guest access Internet (ISP Speed = 120M) ip forwarding vrf Guests ip address 192.168.10.2 255.255.252.0 ip access-group 192 in Any ideas? Regards Nasir _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
