dear all,
I am trying to configure DHCP relay by using ip helper addresses. Strange enough I configured the ip helper addresses properly but the DHCP requests are not being forwarded. Very strange this behavior. I configured it on other similar devices exactly the same, but on this device it is not working.
When I debug the DHCP broadcast a see a strange message about;
00:14:01: FIBipv4-packet-proc: route packet from Vlan1 src 0.0.0.0 dst 255.255.255.255
00:14:01: FIBfwd-proc: Default:255.255.255.255/32 receive entry
00:14:01: FIBipv4-packet-proc: packet routing failed
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 360, rcvd 2
00:14:01: UDP src=68, dst=67
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 360, stop process pak for forus packet
http://www.cisco.com/c/en/us/support/docs/ip/dynamic-address-allocation-resolution/27470-100.html
I really don't understand why the DHCP broadcast is not being forwarded. There is no ACL configured on the gateway. IP routing is enabled. Also I did an ping request from the gateways IP address to the DNS IP destination succesfully so routing is no issue at all.
The configuration is as follows;
interface Vlan1
ip address 192.168.27.254 255.255.255.0
ip helper-address 10.234.66.140
ip helper-address 10.234.66.141
ip helper-address 10.234.66.146
!
interface Vlan3
ip address 10.1.65.254 255.255.255.0
ip helper-address 10.234.66.140
ip helper-address 10.234.66.141
ip helper-address 192.168.27.24
!
interface Vlan10
ip address 10.1.67.254 255.255.255.0
ip helper-address 10.234.66.140
ip helper-address 10.234.66.141
ip helper-address 192.168.27.24
!
interface Vlan11
ip address 10.1.68.254 255.255.255.0
ip helper-address 10.234.66.140
ip helper-address 10.234.66.141
ip helper-address 192.168.27.24
Only the vlan 1 is not working properly with DHCP relay, but the rest is working fine.
Does someone have any idea what is going on here?
E, sendself FALSE, mtu 0, fwdchk FALSE pak 492D990 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 554AD2C consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 553CD64 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 4920F70 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 553DF70 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 492217C consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 553F518 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 55411F8 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 4925068 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 5542068 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 4925ED8 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 4926610 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 347, input feature
00:14:01: UDP src=68, dst=67, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
00:14:01: FIBipv4-packet-proc: route packet from Vlan1 src 0.0.0.0 dst 255.255.255.255
00:14:01: FIBfwd-proc: Default:255.255.255.255/32 receive entry
00:14:01: FIBipv4-packet-proc: packet routing failed
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 347, rcvd 2
00:14:01: UDP src=68, dst=67
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 347, stop process pak for forus packet
00:14:01: UDP src=68, dst=67
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 347, input feature
00:14:01: UDP src=68, dst=67, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
00:14:01: FIBipv4-packet-proc: route packet from Vlan1 src 0.0.0.0 dst 255.255.255.255
00:14:01: FIBfwd-proc: Default:255.255.255.255/32 receive entry
00:14:01: FIBipv4-packet-proc: packet routing failed
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 347, rcvd 2
00:14:01: UDP src=68, dst=67
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 347, stop process pak for forus packet
00:14:01: UDP src=68, dst=67
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 360, input feature
00:14:01: UDP src=68, dst=67, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
00:14:01: FIBipv4-packet-proc: route packet from Vlan1 src 0.0.0.0 dst 255.255.255.255
00:14:01: FIBfwd-proc: Default:255.255.255.255/32 receive entry
00:14:01: FIBipv4-packet-proc: packet routing failed
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 360, rcvd 2
00:14:01: UDP src=68, dst=67
00:14:01: IP: s=0.0.0.0 (Vlan1), d=255.255.255.255, len 360, stop process pak for forus packet
00:14:01: UDP src=68, dst=67pak 5544BB8 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE pak 4929898 consumed in input feature , packet consumed, MCI Check(63), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
