CANOGA PERKINS 9145E NID Software Version 4.10 - Manual (Page 59)

Diagnostics 9145E NID Software User’s Manual
VLAN Loopback
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Figure 4-5 PING Generation - In Progress screen
4.4 VLAN Loopback
The VLAN Loopback feature provides the capability for Layer 2 per VLAN loopback. It includes a
loopback responder and a loopback initiator (Layer 2 Ping). The frame format and message
processing is 802.1ag compatible. Any vendor having implemented the 802.1ag standard can
loop back the 9145E initiated loopback message and vice versa.
Using the loopback initiator, the 9145E can perform a Layer 2 Ping test. For the loopback
responder, the 9145E implements a set of default values so it can loop back any VLAN ID and
any MD level, and the Ethertype will be defaulted to the standard 0x8902.
You can change the Ethertype via UI, Telnet or SNMP. Both IEEE 802.3 and LLC SNAP formats
are supported. The 9145E loopback responder responds to both formats. For the loopback
initiator, the user selects which format to use.
To configure 802.1ag Loopback, type 1 and press Enter. The 802.1ag Loopback Configuration
screen (Figure 4-6) opens.
Canoga Perkins Corp. Ethernet Network Interface Device 18-FEB-1970
9145E-761-0-0 V4.10 21:19:18
-------------------------------PING GENERATION---------------------------------
PING in progress
Ping Address : 0.0.0.0
Ping Count : 0
Ping VLAN Info (C/T/S) : 100/200/300
Pinging 0.0.0.0 from 192.168.92.34 with 40 bytes.
Request timed out, Seq #0
Request timed out, Seq #1
Request timed out, Seq #2
Request timed out, Seq #3
7 packets transmitted, 0 packets received, 100.000% packet loss
round-trip (No round-trip packets received)
Press Escape to continue...
------------------------------------Messages-----------------------------------