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Supported Platforms
Verifying That Generic Routing Encapsulation Tunneling Is Working Correctly
Purpose
Verify that the generic routing encapsulation (GRE) interface is sending tunneled traffic.
Action
Display status information about the specified GRE interface with the command show interfaces (GRE).
user@switch> show interfaces gr-0/0/0Physical interface: gr-0/0/0, Enabled, Physical link is Up
Interface index: 132, SNMP ifIndex: 26
Type: GRE, Link-level type: GRE, MTU: Unlimited, Speed: 800mbps
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Logical interface gr-0/0/0.0 (Index 68) (SNMP ifIndex 47)
Flags: Point-To-Point SNMP-Traps 16384
IP-Header 1.1.1.2:1.1.1.1:47:df:64:0000000000000000 Encapsulation: GRE-NULL
Input packets : 0
Output packets: 0
Protocol inet, MTU: 1476
Flags: None
Addresses, Flags: Is-Primary
Local: 1.10.1.1Meaning
The output indicates that the GRE interface gr-0/0/0 is up. The output displays the name of the physical interface, and the traffic statistics on the interface: the number of and the rate at which input and output bytes and packets are received and transmitted on the physical interface.
