Brocade Fabric OS Command Reference Manual Supporting Fabric OS v6.3.0 (53-1001337-01, July 2009)

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438 Fabric OS Command Reference

53-1001337-01

islShow

Displays interswitch link (ISL) information.

Synopsis islshow

Description Use this command to display the current connections and status of the interswitch link (ISL) for

each port on a switch. The command output includes the following information:

• Node world wide name (WWN)

• Domain ID

• Switch name

• ISL connection speed, if applicable

• Bandwidth

• Trunking enabled, if applicable

• QoS enabled, if applicable

When issued on a switch that is part of a logical fabric configuration, the islShow command

displays logical interswitch links (LISLs) along with regular ISLs. However, speed (sp) displays N/A

for logical ports. The bandwidth (bw) displayed is the sum of the bandwidth of all extended ISLs

(XISLs) that form the LISL. A shared ISL (XISL) connects the base switches and is shared by

different logical fabrics. It allows devices to communicate with each other within the logical fabric.

Connection speed is not applicable to LE_Ports or VE_Ports. For these port types, speed displays as

“sp:-------”.

Note The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may

be in place. Refer to chapter 1, “Using Fabric OS commands” and Appendix A, “Command

Availability” for details.

Operands none

Examples When you issue islshow in a base fabric, the output displays as follows:

switch:user> islshow

1: 2->300 10:00:00:05:1e:43:00:00 100 DCX sp: 8.000G bw: 32.000G TRUNK QOS

2: 8-> 3 10:00:00:05:1e:41:8a:d5 30 B5300 sp: 4.000G bw: 16.000G TRUNK QOS

3: 19-> 10 10:00:00:05:1e:41:43:ac 50 B300 sp: 8.000G bw: 64.000G TRUNK

When you issue islshow in a logical fabric, the output displays as follows:

switch:user> islshow

1: 33-> 29 10:00:00:60:69:80:4f:84 3 B3200 sp: 2.000G bw: 4.000G TRUNK

2: 39-> 7 10:00:00:60:69:45:68:04 4 B3850 sp: 2.000G bw: 8.000G TRUNK

3: 41-> (incompatible)

4: 47-> (incompatible)

5: 95-> 0 10:00:00:05:1e:01:0b:4a 15 B200E sp: 2.000G bw: 2.000G TRUNK

6:162->160 10:00:00:60:69:e2:09:fa 5 B24000 sp:-------- bw: 0.001G

7:384-> 16 10:00:00:05:1e:37:02:73 39 DCX sp:-------- bw: 10.000G

8:385-> 16 10:00:00:05:1e:37:02:73 43 B5300 sp:--------

bw: 11.000G