CANOGA PERKINS 9145E NID Software Version 3.0 - Manual (Page 57)

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 vise 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.
The user may 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.
Figure 4-6 VLAN Loopback
Canoga Perkins Corp. Ethernet Network Interface Device 29-JAN-2009
Model 9145E-101-3-0 V43.08 F211 11:20:59
---------------------------------VLAN LOOPBACK---------------------------------
1) 802.1AG Loopback Configuration
2) VLAN Loopback Statistics
3) L2 Ping Generator
Select[1-3]:
------------------------------------Messages-----------------------------------