3Com Switch 8800 Family IPsec Module Configuration and Command reference Guide

357
0 input error
0 packets output, 0 bytes
0 output error
gre checksum Syntax
gre checksum
undo gre checksum
view
Tunnel interface view
Parameter
None
Description
Use the gre checksum command to configure the two ends of a tunnel to
perform end-to-end check, verifying the correctness of packets and discard those
that do not pass the verification.
Use the undo gre checksum command to cancel the check.
By default, end-to-end check of the two ends of tunnel is disabled.
You may enable or disable checksum at each end of a tunnel as needed. If
checksum is enabled at the local end but not at the opposite end, the local end
will perform checksum on the transmitted packets but not on the received
Tab le 268 Description on the fields of the display interface tunnel 2 command
Field Description
Tunnel2 current state Current state of the tunnel interface
Line protocol current state Current state of the protocol on the tunnel interface
Description The description information of the tunnel interface
The Maximum Transmit Unit The MTU value of the tunnel interface
Encapsulation The tunnel formed by encapsulated GRE protocol
Loopback Enable/Disable loopback test
Tunnel source Source address of the tunnel
destination Destination address of the tunnel
Tunnel keepalive Enable/Disable the keepalive function
Tunnel protocol/transport Encapsulation protocol and transport protocol of the tunnel
key Identification keyword of the tunnel interface
Checksumming of packets End-to-end check of the tunnel
Last 300 seconds input The number of input bytes and packets in the last five minutes
Last 300 seconds output The number of output bytes and packets in the last five minutes
packets input, bytes Total number of input packets and bytes
packets output, bytes Total number of output packets and bytes
input error Number of error packets among all input packets
output error Number of error packets among all output packets