Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 129)

show interface tunnel output descriptions (Continued) TABLE 18
Field Definition
MTU The configured path maximum transmission unit.
encapsulation GRE GRE encapsulation is enabled on the port.
Keepalive Indicates whether or not GRE link keepalive is enabled.
Path MTU Discovery Indicates whether or not PMTUD is enabled. If PMTUD is enabled, the MTU value is also
displayed.
Path MTU The PMTU that is dynamically learned.
Age-timer Indicates the pmtd aging timer configuration in minutes.The default is 10. The range is from
10 - 30.
Path MTU will expire Indicates the time after which the learned PMTU expires. This line is displayed only when a
PMTU is dynamically learned.
The show ip tunnel traffic command displays the link status of the tunnel and the number of keepalive
packets received and sent on the tunnel.
device# show ip tunnel traffic
IP GRE Tunnels
Tunnel Status Packet Received Packet Sent KA recv KA sent
1 up/up 362 0 362 362
3 up/up 0 0 0 0
10 down/down 0 0 0 0
Syntax: show ip tunnel traffic
The show statistics tunnel command displays GRE tunnel statistics for a specific tunnel ID number.
The following shows an example output for tunnel ID 1.
device(config-tnif-10)#show statistics tunnel 1
IP GRE Tunnels
Tunnel Status Packet Received Packet Sent KA recv KA sent
1 up/up 87120 43943 43208 43855
RFC 2784 supports GRE tunnel ports. The show statistics tunnel command output now includes
information from the hardware counters for each tunnel. For example:
IP GRE Tunnel 1 HW Counters:
InOctets 0 OutOctets 0
InPkts 0 OutPkts 0
NOTE
This CLI enhancement is supported only on FCX devices.
Syntax: show statistics tunnel [ tunnel-ID ]
The tunnel-ID variable specifies the tunnel ID number.
IP Configuration
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