HP StorageWorks Fabric OS 5.X Administrator Guide (AA-RVHWB-TE, September 2005)

Fabric OS 5.x administrator guide 173
The following example sets the speed for all ports on the switch to 2 Gbit/second:
The following example sets the speed for all ports on the switch to auto-negotiate:
Displaying trunking information
The trunkShow command offers an efficient means of listing all the trunks and members of a trunk. You
can easily discover the peer ports for disabling a port, disconnecting a port, or adding additional
members. Viewing trunks is also useful for when you want to ensure that trunks are formed correctly.
Use the trunkShow command to display the following information about ISL trunking groups:
• Number identifier.
• Port-to-port connections, listed in the following format: local_port_number ->
remote_port_number.
• WWNs of the remote switches.
• Deskew values (the time difference, in nanoseconds divided by 10, for traffic to travel over each ISL as
compared to the shortest ISL in the group). The system sets the minimum deskew value of the shortest
ISL to 15.
• Master ports.
1. Connect to the switch and log in as admin.
2. Issue the trunkShow command.
The following example shows three trunking groups (1, 2, and 3); ports 1, 4, and 14 are masters:
Trunking over extended fabrics
In addition to the criteria listed in ”Standard trunking criteria” on page 168, observe the following criteria
for trunking over extended fabrics:
• ISL trunking over extended fabrics is supported on switches running Fabric OS 3.2.0 (or later) or
4.4.0 (or later).
• Extended Fabrics and ISL Trunking licenses are required on all participating switches.
• The vc_translation_link_init parameter must be set the same on all ports in an extended
trunk. (For details on this parameter, see ”For dynamic long-distance links, you can approximate the
number of buffer credits using the following formula:” on page 165.)
switch:admin> switchcfgspeed 2
Committing configuration...done.
switch:admin>
switch:admin> switchcfgspeed 0
Committing configuration...done.
switch:admin>
switch:admin> trunkshow
1: 1 -> 1 10:00:00:60:69:04:10:83 deskew 16 Master
0 -> 0 10:00:00:60:69:04:10:83 deskew 15
2: 4 -> 4 10:00:00:60:69:04:01:94 deskew 16 Master
5 -> 5 10:00:00:60:69:04:01:94 deskew 15
7 -> 7 10:00:00:60:69:04:01:94 deskew 17
6 -> 6 10:00:00:60:69:04:01:94 deskew 16
3:14 -> 14 10:00:00:60:69:04:10:83 deskew 16 Master
15 -> 15 10:00:00:60:69:04:10:83 deskew 15
switch:admin>