ME3600 routing issue

[mrlugz]

cisco ME-3600X-24FS-M

Cisco IOS Software, ME360x Software (ME360x-UNIVERSALK9-M), Version 15.3(1)S,

We are experiencing some rather strange behaviour on our ME3600.

brief example.

Source ip address 128.1.33.148 - ping 10.12.42.11 sucessful and can navigate to device webpage.

Source ip address 128.1.33.148 - ping 10.12.42.12 unsucessful

Source ip address 128.1.33.148 - ping 10.12.42.1 unsucessful (gw address of above)

Source ip address 128.1.33.103 - ping 10.12.42.11 unsucessful.

Source ip address 128.1.33.103 - ping 10.12.42.12 sucessful and can navigate to device webpage.

Source ip address 128.1.33.103 - ping 10.12.42.1 unsucessful.

We are seeing this on a number of 10.12.x.x addresses, and 10.30.x.x, some sources can reach, others cant, and its exactly reversed.

Traceroute for sucessful pings show exactly what I expect to see traversing the network.

Traceroute for unsucessful pings get stuck at the ME3600.

So some source ip's working, some not. All the source addresses I have tested go through the same hardware before reaching the 3600, a 2960.

A reload will clear this issue, but only temporarily.

Any assistance greatfully received.