05-19-2009 07:26 PM
I want to configure 'ip helper-address' on the Server side vlan on ACE Context to forward UDP broadcasts. The L3 interface for the servers are on ACE and the servers want to communicate to the NIS servers by resolving ypbind.
I tried the command 'ip dhcp relay server <IP address> on the Vlan interface on ACE context, but it is not working. Any ideas to resolve this is much appreciated.
05-20-2009 12:04 AM
Try the following in the same order as me:
switch/Admin(config)# ip dhcp relay server 192.168.30.44
switch/Admin(config)# ip dhcp relay enable
switch/Admin(config)# do sho ip dhcp relay conf
Context level configuration:
Status: Enabled
Server#1: 192.168.30.44
Interface level configuration:
switch/Admin(config)# do sho ip dhcp relay statistics
Context level configuration:
Number of BOOTREQUEST packet relayed: 0
Number of DHCPDISCOVER packet relayed: 0
Number of DHCPREQUEST packet relayed: 0
Number of DHCPDECLINE packet relayed: 0
Number of DHCPRELEASE packet relayed: 0
Number of DHCPINFORM packet relayed: 0
Number of BOOTREPLY packet relayed: 0
Number of DHCPOFFER packet relayed: 0
Number of DHCPACK packet relayed: 0
Number of DHCPNAK packet relayed: 0
Number of failures while relaying: 0
Interface level Statistics:
switch/Admin(config)#
Gilles
05-20-2009 04:37 AM
Hi Gilles,
I tried this earlier, but not able to get it worked. I have applied the configs only on the Server vlan interface and not on the VIP(client) vlan interface. And again, I am not sure whether I need to configure any dhcp relay forwarding policy.
Thanks
05-20-2009 06:55 AM
do you have a class-map with catching 0.0.0.0/0 ?
Did you get the 'show ip dhcp' info ?
Does it show any intercepted traffic ?
Gilles.
05-20-2009 09:15 AM
There is a class-map for 0.0.0.0/0.
ACE/C1# sh ip dhcp relay information policy
DHCP Relay reforwarding policy configured = REPLACE
ACE/C1# sh ip dhcp relay statistics
Interface level configuration:
Vlan - vlan311:
Interface id - 6:
Number of BOOTREQUEST packet relayed: 0
Number of DHCPDISCOVER packet relayed: 0
Number of DHCPREQUEST packet relayed: 0
Number of DHCPDECLINE packet relayed: 0
Number of DHCPRELEASE packet relayed: 0
Number of DHCPINFORM packet relayed: 0
Number of BOOTREPLY packet relayed: 0
Number of DHCPOFFER packet relayed: 0
Number of DHCPACK packet relayed: 0
Number of DHCPNAK packet relayed: 0
Number of failures while relaying: 0
05-21-2009 05:21 AM
Hi Peter ,
have you applied it to particular vlan or not , I am not sure by looking at your config.
to enable the DHCP relay at the VLAN interface level, enter:
host1/Admin(config)# interface vlan 50
Kindly check if it can make your config work.
See below mentioned url for complete dhcp relay config :
Kindly see the following url for my other postings:
Kind regards.
Sachinga.hcl
05-21-2009 07:24 AM
the dhcp request will actually match the 0.0.0.0/0 class-map and it will be dropped.
Do you have the possibility to disable that class-map/policy-map and see if that solves the problem.
I think there is a bug open for this currently.
Gilles.
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