I got some problem with enabling dhcp snooping on 4500 (cat4500e-lanbasek9-mz.122-54.SG.bin)
the topology is as below:
dhcp snooping enabled only on CORE (with interface trusted to dhcp server)
the problem is that I put these 2 commnads
ip dhcp snooping
ip dhcp snooping vlan 1
but it is not enabled on any vlan
SW-CORE#sh ip dhcp snooping
Switch DHCP snooping is enabled
DHCP snooping is configured on following VLANs:
DHCP snooping is operational on following VLANs:
DHCP snooping is configured on the following L3 Interfaces:
Insertion of option 82 is enabled
circuit-id default format: vlan-mod-port
remote-id: 1cdf.0ffe.1600 (MAC)
Option 82 on untrusted port is not allowed
Verification of hwaddr field is enabled
Verification of giaddr field is enabled
DHCP snooping trust/rate is configured on the following Interfaces:
Interface Trusted Allow option Rate limit (pps)
--------------------- ------- ------------ ----------------
GigabitEthernet6/48 yes yes unlimited
On B1 if I turn it on there is a "1" in the section "
DHCP snooping is configured on following VLANs:" but on core no.
As you can see I did put the trusted on the interface in the direction to the dhcp.
First I thought it can be a problem with option 82, I've read a lot about the issues with that, but the problem would be explicable if the client did receive IP address, but it does.
Right now I have no access to the devices so deep troubleshooting is limited so any raw suggestions?