Enterasys Networks 5H1XX - Manual (Page 81)

Configuring SmartTrunks
Device Control Menu Screens 7-21
The ports used for each trunk must all be on the same internal switch chip, which is synonymous
with the SmartTrunk Group ID.
Table 7-1 identifies the ports associated with each group ID.
7.7.1 IGMP Multicast Filtering
Multicasting is used to support real-time applications such as video conferences or streaming
audio. A multicast server does not have to establish a separate connection with each client. It
merely broadcasts its service to the network, and any hosts that want to receive the multicast
register with their local multicast switch/router. Although this approach reduces the network
overhead required by a multicast server, the broadcast traffic must be carefully pruned at every
multicast switch/router it passes through to ensure that traffic is only passed to the hosts that
subscribed to this service.
This switch uses IGMP (Internet Group Management Protocol) to query for any attached hosts
who want to receive a specific multicast service. The switch looks up the IP Multicast Group used
for this service and adds any port that received a similar request to that group. It then propagates
the service request on to any neighboring multicast switch/router to ensure that it will continue to
receive the multicast service. (For more information about the use of IGMP snooping and
multicast filtering, refer to
Appendix D .)
SmartTrunk Priotocol Used to select from 1 to 6 trunks. This is the group ID of the
SmartTrunk group. It identifies the chip set to be used.
Refer to
Table 7-1 for the ports associated with each
group ID.
NO CHANGE field Used to add or delete ports from group ID. Steps to ADD,
DELETE, and NO CHANGE (default setting). This setting
causes the port selected in the Port field to be added,
deleted, or not changed when SAVE command is used.
SAVE Saves the current values on the screen.
SHOW Displays the SmartTrunk group listed under the
SmartTrunk Group ID field.
Table 7-1 SmartTrunk, Ports Associated with Group IDs
Group IDs 1 2 3 4 5 6
Ports 1 thru 8 9 thru16 17 thru 24 25 thru 32 33 thru 40 41 thru 48
Parameter Description