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Hi, I've a problem with SPAN. it doesn't send icmp packets to my sniffer. For example: R1 - SW1 - R2, I can do ping between R1 and R2 but I can't see this icmp packets in wireshark through monitor session destination port. If I replace router by PC ...
Yes I can see ICMP packets of ping 255.255.255.255. I don't see traffic of telnet in wireshark but I can connect with telnet to other router. Wireshark is always set in promiscuous mode.
I can see CDP, VTP, PAgP, DTP, ARP, STP but ICMP from 1 access port to other access port is impossible!!!! I don't have any problem with wireshark PC because the same system detects all packets, included ICMP when I change routers by PC's.
