Enterasys Networks Fast Network 10 - Manual (Page 51)

Disabling Trunking
Fast Network 10 User Guide Page 3-9
To enable trunking for the example shown, you would:
1. Connect the desired ports of the FN10s together using 10BASE-T
crossover cables.
If FN10 A is handling only a small number of users, the A to B Trunk
Group could have just two ports per FN10. If FN10 B and C are
expected to interconnect many users, you could use up to eight ports
in the B to C Trunk Group.
2. Using LCM, turn on trunking for the connected ports on each FN10.
For FN10 A, at the LCM prompt:
a. Type trunk 2,3 on
For FN10 B, at the LCM prompt:
b. Type trunk 3-10,14-15 on
For FN10 C, at the LCM prompt:
c. Type trunk 3-10 on
Each FN10 automatically determines which ports are part of which
Trunk Group. After Trunk Group configuration, the FN10s complete
the standard 802.1D Spanning Tree state changes, treating each Trunk
Group as a single 802.1D Spanning Tree port.
802.1D Spanning Tree takes about thirty seconds to resolve which
FN10 ports are to become forwarding ports. As ports within a Trunk
Group become forwarding ports, traffic within the Trunk Group is
momentarily halted to guarantee the first-in, first-out ordering of the
Ethernet packets.
3.6 DISABLING TRUNKING
To turn off trunking, at the LCM prompt:
NOTE
The FN10-to-FN10 connections must be point-to-point. There
cannot be any other devices on those Ethernets. The ports
used for trunking can be in any order. However, both ends of
the FN10-to-FN10 connections must have trunking turned on
for the ports that are being used for the connections.