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

16 Fabric OS FCIP Administrator’s Guide

53-1002748-01

FCIP Trunking

Using traceroute with crossports

You can trace a route to a crossport address, as in the following example. Note that if the crossport

or x options are not specified and the address is on the crossport, the portcmd command will fail

with an unknown IP address.The command will also fail if the x option is specified and the address

is not on the crossport.

portcmd --traceroute 8/xge0 -s 192.168.11.20 -d 1.1.1.1 –x

portcmd --traceroute 8/xge0 -s 192.168.11.20 -d 1.1.1.1 --crossport

When using VLANS, VLAN tagging ensures that test traffic traverses the same path as real FCIP

traffic. A VLAN tag entry for both the local and remote sides of the route must exist prior to issuing

the portCmd --traceroute command. Refer to “Managing the VLAN tag table” on page 28 for details.

For more information on using traceroute, refer to “Using traceroute” on page 68.

Crossport bandwidth allocation

There is a total of 10 Gbps crossport bandwidth allocation for the entire FX8-24 blade. The total

crossport bandwidth cannot exceed 10 Gbps for all VE_Ports on the blade, regardless of the FCIP

engine to which the VE_Ports belong. Crossport bandwidth allocation for 10GbE ports is calculated

as follows

• The total crossport bandwidth allocation is calculated by adding up the consumed bandwidth

for every FCIP tunnel using a crossport IP address.

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

committed rates (not rounded) for all metric 0 circuits that use a crossport IPIF, and then

adding up the maximum rates (not rounded) for all metric 1 circuits.

FCIP Trunking

FCIP Trunking is a method for managing the use of WAN bandwidth and providing redundant paths

over the WAN that can protect against transmission loss due to WAN failure. FCIP Trunking also

provides granular load balancing on a weighted round-robin basis per batch. Trunking is enabled by

creating logical circuits within an FCIP tunnel so that the tunnel utilizes multiple circuits to carry

traffic between multiple source and destination addresses. You can configure up to six circuits on

tunnels between 7800 switches and up to 10 on tunnels between FX8-24 blades. Each circuit is a

connection between a pair of IP addresses that are associated with source and destination

endpoints of an FCIP tunnel, as shown in Figure 4.