Hello, I am seeing a lot of fragmented UDP 17 packets in a Wireshark sniff of incoming traffic from a Cisco 4900 switch (firmware 122-53.SG10) However when I run the command 'sh ip traffic' on the switch, the fragmentation statistics look empty. Can someone explain why this is ?
Thank you kindly
##sh ip traffic
IP statistics:
Rcvd: 1445188 total, 1404824 local destination
0 format errors, 0 checksum errors, 2072 bad hop count
0 unknown protocol, 562 not a gateway
0 security failures, 0 bad options, 29173 with options
Opts: 0 end, 0 nop, 0 basic security, 0 loose source route
0 timestamp, 0 extended security, 0 record route
0 stream ID, 0 strict source route, 29173 alert, 0 cipso, 0 ump
0 other
Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble
0 fragmented, 0 couldn't fragment
Bcast: 1179774 received, 0 sent
Mcast: 132217 received, 120400 sent
Sent: 244084 generated, 3314915 forwarded
Drop: 2868 encapsulation failed, 0 unresolved, 0 no adjacency
0 no route, 0 unicast RPF, 0 forced drop
0 options denied, 0 source IP address zero
ICMP statistics:
Rcvd: 0 format errors, 0 checksum errors, 0 redirects, 2 unreachable
26786 echo, 0 echo reply, 0 mask requests, 0 mask replies, 0 quench
0 parameter, 0 timestamp, 0 info request, 0 other
0 irdp solicitations, 0 irdp advertisements
Sent: 30951 redirects, 3 unreachable, 0 echo, 26786 echo reply
0 mask requests, 0 mask replies, 0 quench, 0 timestamp
0 info reply, 3 time exceeded, 0 parameter problem
0 irdp solicitations, 0 irdp advertisements
TCP statistics:
Rcvd: 711 total, 0 checksum errors, 1 no port
Sent: 555 total
Probe statistics:
Rcvd: 0 address requests, 0 address replies
0 proxy name requests, 0 where-is requests, 0 other
Sent: 0 address requests, 0 address replies (0 proxy)
0 proxy name replies, 0 where-is replies
UDP statistics:
Rcvd: 1364794 total, 0 checksum errors, 1180006 no port
Sent: 183751 total, 0 forwarded broadcasts
OSPF statistics:
Rcvd: 0 total, 0 checksum errors
0 hello, 0 database desc, 0 link state req
0 link state updates, 0 link state acks
Sent: 0 total
0 hello, 0 database desc, 0 link state req
0 link state updates, 0 link state acks
EIGRP-IPv4 statistics:
Rcvd: 0 total
Sent: 0 total
PIMv2 statistics: Sent/Received
Total: 1206/1200, 0 checksum errors, 0 format errors
Registers: 0/0 (0 non-rp, 0 non-sm-group), Register Stops: 0/0, Hellos: 1206/1200
Join/Prunes: 0/0, Asserts: 0/0, grafts: 0/0
Bootstraps: 0/0, Candidate_RP_Advertisements: 0/0
Queue drops: 0
State-Refresh: 0/0
IGMP statistics: Sent/Received
Total: 902/11608, Format errors: 0/0, Checksum errors: 0/0
Host Queries: 594/0, Host Reports: 308/11513, Host Leaves: 0/40
DVMRP: 0/0, PIM: 0/0
Queue drops: 0
ARP statistics:
Rcvd: 303057 requests, 19571 replies, 53 reverse, 0 other
Sent: 2619 requests, 13147 replies (12641 proxy), 0 reverse
Drop due to input queue full: 0
