Hi experts,
I have this switch and it doesn't relay DHCP packets for certain DHCP clients.
!
interface Vlan853
description VOD_IDF_2A-4A
ip address 172.19.1.6 255.255.255.0
ip helper-address 172.19.255.40
no ip redirects
no ip unreachables
no ip proxy-arp
!
interface Vlan851
description VOD_Servers
ip address 172.19.255.6 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
!
#ping 172.19.255.40
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.19.255.40, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
A WinXP laptop can get IP fine on VLAN 853 but not a STB. When I do "debug ip dhcp server packets" I see the following errors
Nov 15 12:05:42: DHCPD: option 12 is malformed (option length 0).
Nov 15 12:05:42: DHCPD: invalid DHCP options - unable to parse
(repeated)
The DHCP request packets are discarded by the switch and it is likely because of the above error.
I don't have DHCP snooping turned on. How do I turn off this type of DHCP inspection thing on the switch?
Thanks!
Difan
