Changing speed of ISL ports on a Cisco FC switch
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PDF of this doc site
- Install a fabric-attached MetroCluster
- Install a MetroCluster IP configuration
- Install a stretch MetroCluster configuration
- Transition from MetroCluster FC to MetroCluster IP
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You might need to change the speed of ISL ports on a switch to improve the quality of the ISL. ISLs traveling greater distances might need their speed lowered to improve quality.
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Complete all the steps on both switches to ensure ISL connectivity.
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Enable console logging before performing this task.
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Disable the ISL ports of the ISLs that you want to change the speed of on both switches in the fabric:
FC_switch_A_1# config t
Enter configuration commands, one per line. End with CTRL-Z after you have entered all of the configuration commands.
FC_switch_A_1(config)# interface fc1/36 FC_switch_A_1(config-if)# shut FC_switch_A_1(config)# end
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Change the speed of the ISL ports on both switches in the fabric:
FC_switch_A_1# config t
Enter configuration commands, one per line. End with CTRL-Z after you have entered all of the configuration commands.
FC_switch_A_1(config)# interface fc1/36 FC_switch_A_1(config-if)# switchport speed 16000
Speeds for ports are 16 = 16,000 Gbps, 8 = 8,000 Gbps, 4 = 4,000 Gbps. Ensure that these ISL ports for your switch are listed in the Fabric-attached MetroCluster Installation and Configuration Guide.
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Enable all ISL ports (if not enabled) on both switches in the fabric:
FC_switch_A_1# config t
Enter configuration commands, one per line. End with CTRL-Z after you have entered all of the configuration commands.
FC_switch_A_1(config)# interface fc1/36 FC_switch_A_1(config-if)# no shut FC_switch_A_1(config)# end
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Verify the ISLs are established between both switches:
show topology isl
-------------------------------------------------------------------------------- __________Local_________ _________Remote_________ VSAN Cost I/F PC I/F Band PC Domain SwName Port Port SwName Domain PC Stat Stat Speed width -------------------------------------------------------------------------------- 1 0x11 cisco9 fc1/36 fc1/36 cisco9 0xbc 1 1 15 up up 16g 64g 1 0x11 cisco9 fc1/40 fc1/40 cisco9 0xbc 1 1 15 up up 16g 64g 1 0x11 cisco9 fc1/44 fc1/44 cisco9 0xbc 1 1 15 up up 16g 64g 1 0x11 cisco9 fc1/48 fc1/48 cisco9 0xbc 1 1 15 up up 16g 64g
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Repeat the procedure for the second switch fabric.