I have a Cisco router with NM-16ESW switch module (all virtual, on GNS3). Switch is connected to a router and two hosts and there is heavy simulated traffic passing through the switch. However, interface counters show zero input and output. What could be the cause of this issue?
ESW3#show int counters
Port InOctets InUcastPkts InMcastPkts InBcastPkts
Fa1/0 0 0 0 0
Fa1/1 0 0 0 0
Fa1/2 0 0 0 0
Fa1/3 0 0 0 0
Fa1/4 0 0 0 0
Fa1/5 0 0 0 0
Fa1/6 0 0 0 0
Fa1/7 0 0 0 0
Fa1/8 0 0 0 0
Fa1/9 0 0 0 0
Fa1/10 0 0 0 0
Fa1/11 0 0 0 0
Fa1/12 0 0 0 0
Fa1/13 0 0 0 0
Fa1/14 0 0 0 0
Fa1/15 0 0 0 0
Port OutOctets OutUcastPkts OutMcastPkts OutBcastPkts
Fa1/0 0 0 0 0
Fa1/1 0 0 0 0
Fa1/2 0 0 0 0
Fa1/3 0 0 0 0
Fa1/4 0 0 0 0
Fa1/5 0 0 0 0
Fa1/6 0 0 0 0
Fa1/7 0 0 0 0
Fa1/8 0 0 0 0
Fa1/9 0 0 0 0
Fa1/10 0 0 0 0
Fa1/11 0 0 0 0
Fa1/12 0 0 0 0
Fa1/13 0 0 0 0
Fa1/14 0 0 0 0
Fa1/15 0 0 0 0