Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 454

ICL trunking between Brocade DCX 8510 Backbones, Fabric OS Software Licensing Guide

Page 454 highlights

Inter-chassis Links ∙ The maximum number of ICLs between two Brocade DCX 8510-4 chassis or between a Brocade DCX 8510-8 and a Brocade DCX 8510-4 is 16. The maximum number of ICLs between two Brocade DCX 8510-8 chassis is 32. Because the FSPF routing logic uses only the first 16 paths to come online, only 16 ICLs are utilized. With Virtual Fabrics, however, you can define two logical switches on the chassis and have 16 ICLs in each. NOTE Brocade recommends that you have a maximum of eight ICLs connected to the same neighboring domain, with a maximum of four ICLs from each core blade. ∙ The ICLs can connect to either core blade in the neighboring chassis. Unlike the copper ICLs, the QSFP ICLs do not need to be cross-connected. NOTE QSFP ICLs and ISLs in the same logical switch and connected to the same neighboring switch are not supported. This is a topology restriction with 16 Gbps ICLs and any ISLs that are E_Ports or VE_Ports.If Virtual Fabrics is enabled, you can have ICLs and ISLs between a pair of Brocade DCX 8510 chassis if the ICLs are in a different logical switch than the ISLs. ICL trunking between Brocade DCX 8510 Backbones ICL trunks form automatically but additional licenses may be required for enabling all ICL ports or for larger ICL configurations. For more information about ICL licensing options, refer to the Fabric OS Software Licensing Guide. NOTE Each QSFP cable has four ports, each terminating on a different ASIC. These ports cannot form a trunk with each other, but can form trunks only with corresponding ports on another QSFP. Each core blade in the Brocade DCX 8510-8 contains 16 ICL trunk groups. Each core blade in the Brocade DCX 8510-4 contains 8 ICL trunk groups. Each ICL trunk group contains 4 user ports, one from each QSFP. To establish ICL trunking between platforms in the Brocade DCX 8510 Backbone family, the QSFP cables must be in the same trunk group. The following illustration marks the 4-port ICL trunking boundaries or port groups for DCX 8510 core routing blades (CR16-8 and CR16-4 blades): Brocade Fabric OS Administration Guide, 8.0.1 454 53-1004111-02

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The maximum number of ICLs between two Brocade DCX 8510-4 chassis or between a Brocade DCX 8510-8 and a Brocade
DCX 8510-4 is 16.
The maximum number of ICLs between two Brocade DCX 8510-8 chassis is 32.
Because the FSPF routing logic uses only the first 16 paths to come online, only 16 ICLs are utilized. With Virtual Fabrics, however, you
can define two logical switches on the chassis and have 16 ICLs in each.
NOTE
Brocade recommends that you have a maximum of eight ICLs connected to the same neighboring domain, with a maximum of
four ICLs from each core blade.
The ICLs can connect to either core blade in the neighboring chassis. Unlike the copper ICLs, the QSFP ICLs do not need to be
cross-connected.
NOTE
QSFP ICLs and ISLs in the same logical switch and connected to the same neighboring switch are not supported. This is a
topology restriction with 16 Gbps ICLs and any ISLs that are E_Ports or VE_Ports.If Virtual Fabrics is enabled, you can have
ICLs and ISLs between a pair of Brocade DCX 8510 chassis if the ICLs are in a different logical switch than the ISLs.
ICL trunking between Brocade DCX 8510 Backbones
ICL trunks form automatically but additional licenses may be required for enabling all ICL ports or for larger ICL configurations. For more
information about ICL licensing options, refer to the
Fabric OS Software Licensing Guide
.
NOTE
Each QSFP cable has four ports, each terminating on a different ASIC. These ports cannot form a trunk with each other, but
can form trunks only with corresponding ports on another QSFP.
Each core blade in the Brocade DCX 8510-8 contains 16 ICL trunk groups. Each core blade in the Brocade DCX 8510-4 contains 8 ICL
trunk groups. Each ICL trunk group contains 4 user ports, one from each QSFP.
To establish ICL trunking between platforms in the Brocade DCX 8510 Backbone family, the QSFP cables must be in the same trunk
group.
The following illustration marks the 4-port ICL trunking boundaries or port groups for DCX 8510 core routing blades (CR16-8 and
CR16-4 blades):
Inter-chassis Links
Brocade Fabric OS Administration Guide, 8.0.1
454
53-1004111-02