I'm trying to get ERSPAN working with an ERSPAN source on a Nexus 5548 and the ERSPAN destination on a Catalyst 6500.
The configuration on the Nexus is as follows:
ip address 192.168.2.133/32
ip router eigrp 1
ip pim sparse-mode
monitor session 1 type-erspan-source
destination ip 192.168.15.133
source interface Ethernet1/31 both
source interface Ethernet1/32 both
monitor erspan origin ip-address 192.168.2.133 global
The configuration on the C6500 is as follows:
switchport mode access
spanning-tree portfast edge
monitor session 1 type erspan-destination
destination interface Gi4/6
ip address 192.168.2.133
If I do a netdr capture I can see ERSPAN traffic sourced from the Nexus reaching the C6500, but there doesn't appear to be anything sent out the ERSPAN destination inerface (Gi4/6) and there's nothing being received by the probe connected to that interface. I know the traffic seen with netdr is definitely the ERSPAN traffic sourced from the Nexus as I've changed the TTL and DSCP values within the monitor session on the Nexus and can see those changes reflected on the C6500 netdr capture. The attached is a screen grab of the show netdr capture started with debug netdr capture soure-ip-address 192.168.2.133.
When I look at the interface I see it shown as up/down (monitoring), but no output or counters clocking up. If I run a local SPAN session on the C6500 it works fine.
I've tried changing the destination IP address from that assigned to the C6500 Loopback interface to an IP address assigned to a physical interface, but that still doens't work.
The hardware in the C6500 is WS-SUP720-BASE Hw version 3.2 with WS-F6K-PFC3B Hw version 2.4. The IOS version is 12.2(33)SXI6.
Am I missing something really obvious here? Any ideas where to look next?