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3560 Encapsulation failed

Hello Everyone :)

I recently got a cisco 3560 from cables and kits, and when I was looking at the port statistics I noticed that I had some Encap Failures. Ill post the info below: Also is this something that i should be worried about or is it normal? Thanks :)

IP statistics:
Rcvd: 214822 total, 79503 local destination
0 format errors, 0 checksum errors, 0 bad hop count
0 unknown protocol, 135319 not a gateway
0 security failures, 0 bad options, 14875 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, 14875 alert, 0 cipso, 0 ump
0 other
Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble
0 fragmented, 0 couldn't fragment
0 invalid hole
Bcast: 54620 received, 6 sent
Mcast: 0 received, 0 sent
Sent: 29865 generated, 0 forwarded
Drop: 8 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, 5 unreachable
120 echo, 110 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: 0 redirects, 2 unreachable, 110 echo, 120 echo reply
0 mask requests, 0 mask replies, 0 quench, 0 timestamp
0 info reply, 0 time exceeded, 0 parameter problem
0 irdp solicitations, 0 irdp advertisements

TCP statistics:
Rcvd: 24320 total, 0 checksum errors, 33 no port
Sent: 29189 total

UDP statistics:
Rcvd: 55018 total, 0 checksum errors, 54578 no port
Sent: 448 total, 0 forwarded broadcasts

EIGRP-IPv4 statistics:
Rcvd: 0 total
Sent: 0 total

PIMv2 statistics: Sent/Received
Total: 0/0, 0 checksum errors, 0 format errors
Registers: 0/0 (0 non-rp, 0 non-sm-group), Register Stops: 0/0, Hellos: 0/0
Join/Prunes: 0/0, Asserts: 0/0, grafts: 0/0
Bootstraps: 0/0, Candidate_RP_Advertisements: 0/0
State-Refresh: 0/0

IGMP statistics: Sent/Received
Total: 0/0, Format errors: 0/0, Checksum errors: 0/0
Host Queries: 0/0, Host Reports: 0/0, Host Leaves: 0/0
DVMRP: 0/0, PIM: 0/0

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

ARP statistics:
Rcvd: 8889 requests, 9 replies, 0 reverse, 0 other
Sent: 32 requests, 315 replies (0 proxy), 0 reverse
Drop due to input queue full: 0

1 ACCEPTED SOLUTION

Accepted Solutions
VIP Advisor

Re: 3560 Encapsulation failed

This not an issue, as long as they are not increasing gradually, ( if this is old version of IOS, check the show interface fas 0./0)

 

ip broadcast enabled ? or disabled ?

 

 

encapsulation failed

Usually indicates that the router had no ARP request entry and therefore did not send a datagram.

BB
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2 REPLIES 2
Participant

Re: 3560 Encapsulation failed

use debug

VIP Advisor

Re: 3560 Encapsulation failed

This not an issue, as long as they are not increasing gradually, ( if this is old version of IOS, check the show interface fas 0./0)

 

ip broadcast enabled ? or disabled ?

 

 

encapsulation failed

Usually indicates that the router had no ARP request entry and therefore did not send a datagram.

BB
*** Rate All Helpful Responses ***