Brocade VDX 6740 Hardware Reference Manual (Supporting VDX 6740, VDX 6740T, and VDX 6740T-1G) - Manual (Page 33)

Brocade VDX 6740 Hardware Reference Manual 21
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Brocade inter-switch link trunks
3
Brocade inter-switch link trunks
In VCS mode, unless specifically disabled, inter-switch link (ISL) Brocade trunking between
adjacent switches is automatic. All ports must be in the same port group and must be configured at
the same speed. There is a limit of sixteen ports per trunk group. No separate licensing is required.
Refer to
Figure 5 and Figure 6 below for the exact port groups. On the Brocade VDX 6740T and
Brocade VDX 6740T-1G, ports in groups 3 and 3A, as well as port groups 4 and 4A, cannot be
trunked together. However, these ports can be trunked on the Brocade VDX 6740 when the 40 GbE
QSFP ports are configured in breakout mode. Brocade VDX 6740T-1G 1GbE ports cannot be
trunked. For more information about Brocade trunking, refer to the Brocade Network OS
Administrator’s Guide.
FIGURE 5 Port groups of the Brocade VDX 6740
FIGURE 6 Port groups of the Brocade VDX 6740T and Brocade VDX 6740T-1G
Upgrading port speeds on the Brocade VDX 6740T-1G
Using the 10G Port Upgrade License, you can enable RJ45 ports operating at 1 Gbps on the
Brocade VDX 6740T-1G switch to also operate at 10 Gbps. The license is applied in increments of
16 ports. To upgrade the ports, use the following procedure.
1. Install the PORT_10G_UPGRADE license. Use the following instructions in the Administering
Licenses chapter of the Network OS Administrator’s Guide:
• Displaying the switch ID
• Obtaining the license key
1 Trunk Group 1 - 1/10 GbE SFP ports 1-16 4 Trunk group 4 - 1/10 GbE SFP ports 41-48
2 Trunk Group 2 - 1/10 GbE SFP ports 17-32 5 Trunk Group 3A - 40 GbE QSFP ports 49-50
3 Trunk Group 3 - 1/10 GbE SFP ports 33-40 6 Trunk Group 4A - 40 GbE QSFP ports 51-52
1 Trunk Group 1 - 1/10 GbE BaseT ports 1-16 4 Trunk Group 4 - 1/10 GbE BaseT ports 41-48
2 Trunk Group 2 - 1/10 GbE BaseT ports 17-32 5 Trunk Group 3A - 40 GbE QSFP ports 49-50
3 Trunk Group 3 - 1/10 GbE BaseT ports 33-40 6 Trunk Group 4A - 40 GbE QSFP ports 51-52