Cabletron Systems 2H253-25R Manuale Utente

Pagina di 64
Network Requirements
2-1
2
Network Requirements
Before installing the 2H253-25R, review the requirements and specifications referred to in this 
chapter concerning the following:
SmartTrunk (
10BASE-T Twisted Pair Network (
100BASE-TX Twisted Pair Network (
The network installation must meet the requirements to ensure satisfactory performance of this 
equipment. Failure to do so will produce poor network performance. 
2.1
SmartTrunk
To connect the 2H253-25R to a network so it can take advantage of the SmartTrunk feature, there 
are certain rules concerning port connections and configurations that must be followed for proper 
operation. Refer to the Cabletron Systems SmartTrunk User’s Guide for additional information.
2.2
10BASE-T NETWORK
When connecting a 10BASE-T segment to any of the 2H253-25R ports (1 through 24), ensure that 
the network meets the Ethernet network requirements of the IEEE 802.3 standard for 10BASE-T. 
The ports support Category 3 UTP cabling when connected to a 10BASE-T segment. Refer to the 
Cabletron Systems Cabling Guide for details.
NOTE
The Cabletron Systems 
SmartTrunk User’s Guide
 and 
Cabling Guide
 referred to 
in the following sections can be found on the Cabletron Systems World Wide 
Web site: http://www.cabletron.com/
NOTE
If a port is to operate at 10 and 100 Mbps, Category 5 cabling must be used. 
Refer to 
 for information about 100BASE-TX networks and cabling.