Brocade Fabric OS FCIP Administrator's Guide v7.1.0 (53-1002748-01, March 2013)

Fabric OS FCIP Administrator’s Guide 13

53-1002748-01

FX8-24 blade license options

Back-end bandwidth

Back-end port bandwidth allocation is calculated as follows:

• Back-end bandwidths are always rounded up to the nearest 1 Gbps. For example, 1.5 Gbps

actually consumes 2 Gbps of back-end bandwidth.

• Each VE_Port group is allocated 10 Gbps of back-end bandwidth (10 Gbps for the VE_Port

12-21 group and 10 Gbps for the VE_Port 22-31 group).

• The total back-end port bandwidth allocation is calculated by adding up the consumed

bandwidth for each FCIP tunnel in the VE_Port group.

• The consumed bandwidth for a given FCIP tunnel is calculated by adding the maximum

committed rates (rounded to the nearest 1 Gbps) for all metric 0 circuits, adding up the

maximum committed rates (also rounded to the nearest 1 Gbps) for all metric 1 circuits, then

taking the greater of the two values.

Front-end bandwidth

Front-end port bandwidth allocation is calculated as follows:

• Each 10 GbE port is allocated 10 Gbps of front-end bandwidth. The total front-end port

bandwidth allocation cannot exceed 10 Gbps per 10 GbE port.

• The total front-end port bandwidth allocation is calculated by adding up the consumed

bandwidth for each FCIP tunnel using that XGE port.

• The consumed bandwidth for a given FCIP tunnel is calculated by adding up the maximum

committed rates (not rounded) for all metric 0 circuits using that XGE port, adding up the

maximum rates (not rounded) for all metric 1 circuits using that XGE port, then taking the

greater of the two values.

Crossports

The FX8-24 blade supports two FCIP engines. Each engine has a “home” or local 10GbE XGE

interface, which is either XGE port 0 (xge0) or XGE port 1 (xge1). When an engine is not using its

home XGE interface, but the alternate or remote interface, an address (ipif), route (iproute) and

circuit for that interface is known as a “crossport.” Crossports are addresses (ipif), routes (iproutes)

that belong to the other interface. The crossport for xge0 is xge1 and for xge1, the crossport is

xge0. To use crossports, both XGE ports must be configured in 10 Gbps mode.

NOTE

XGE and GbE port may be used interchangeably in this document.

You can configure IP addresses and configure a circuit with metrics for circuit failover on

crossports. You can also configure VE_Ports that are normally available on the a local XGE port to

operate through a crossport. The crossport is the non-local XGE port for a VE_Port group. In other

words, for VE ports 12 through 21, xge1 is the local XGE port and xge0 is the crossport. For VE

ports 22 through 31, xge0 is the local XGE port and xge1 is the crossport.

Configuring crossports

Configure crossport XGE port addresses using the --crossport or -x (shorthand) options for the

portcfg ipif command, as shown in the following example. Note that in this example, IP address

192.168.11.20, created for a FX8-24 blade in slot 8 on port xge0 will be available for circuits on VE

ports 12 through 21.

portcfg ipif 8/xge0 create 192.168.11.20 255.255.255.0 1500 --crossport