Cabletron Systems ELS10-26TX Manuale Utente

Configuring Your ELS10-26

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 • Perturbed — Trunking is enabled, and a good trunk connection 

has been established. However, the forwarding of data packets 
is temporarily suspended to allow for a change in the 
membership of the Trunk Group.

The ELS10-26 allows you to monitor the 10BASE-T ports on the 
ELS10-26 (you cannot monitor the 100BASE ports ). The 
monitoring of network traffic is performed by the ELS10-26 
hardware, and the monitor image reflects the original packet. The 
ELS10-26 monitoring function maintains the original packet 
ordering of bridging frames between the inbound and outbound 
interfaces. 

Using the LCM or a NMS, you can monitor a port, and select to 
monitor only packets received, only packets transmitted, or 
packets both received and transmitted by a port (if the port is 
operating in half duplex). In full duplex you can mirror either 
recieved packet or transmitted packet (not both).

To enable port monitoring on the ELS10-26:

1. Connect a network analyzer to the port labeled MONX on the 

ELS10-26.

2. Using the LCM or NMS, select the port or range of ports you 

want to monitor. Also select to monitor the received packets 
(Rx) or transmitted packets (Tx). If you do not select either the 
transmit or recieve options, the ELS10-26 will monitor both 
types of packets. 

For example, 

This will turn on monitoring for packets transmitted on port 2.