HP SN3000B User Manual

Fabric OS Administrator’s Guide 477
53-1002446-01
Backbone fabric IDs
24
FC-FC routing and fabric mode Top Talker monitors are not concurrently supported on 8-Gbps
platforms.
FC-FC routing and fabric mode Top Talker monitors are concurrently supported only on the
Brocade 6510 and on the Brocade DCX Backbone family with only 16-Gbps-capable ports.
Backbone fabric IDs
If your configuration has only one backbone fabric, then you do not need to assign a backbone
fabric ID because the backbone fabric ID in this situation defaults to a value of 128. The default
backbone fabric ID is 1 if Virtual Fabrics is disabled.
All switches in a backbone fabric must have the same backbone fabric ID. You can configure the
backbone fabric ID using the fcrConfigure command. The backbone fabric ID must be unique from
the perspective of every attached edge fabric. Fabric ID changes made on a switch are not
propagated to other switches in the backbone fabric. Rather, the backbone fabric administrator is
responsible for making sure that all switches in the backbone have the same fabric ID. Because
fabric IDs are used heavily by the routing protocol between the Fibre Channel routers, using the
wrong fabric ID can affect both edge-to-edge and backbone-to-edge routing.
In addition to ensuring that the backbone fabric IDs are the same within the same backbone, you
must make sure that when two different backbones are connected to the same edge fabric, the
backbone fabric IDs are different, but the edge fabric ID should be the same. Configuration of two
backbones with the same backbone fabric ID that are connected to the same edge is invalid. In this
configuration, a RASLog message displays a warning about fabric ID overlap. When two backbone
fabrics are not connected to the same edge, they can have the same backbone fabric ID.
ATTENTION
In a multi-switch backbone fabric, modification of the FID within the backbone fabric will cause
disruption to local traffic.
Assigning backbone fabric IDs
1. Log in to the switch or Backbone.
2. Enter the switchDisable command if EX_Ports are online.
3. Enter the fosConfig
--disable fcr command to disable the FC-FC routing service.
The default state for the FCR is disabled.
4. Enter the fcrConfigure command. At the prompt, enter the fabric ID, or press Enter to keep the
current fabric ID, which is displayed in brackets.
5. Verify the backbone fabric ID is different from that set for edge fabrics.
Multiple FC routers attached to the same backbone fabric must have the same backbone
fabric ID.
6. Enter the fosConfig
--enable fcr command.
7. Enter th e switchEnable command.
Example
switch:admin> switchdisable
switch:admin> fosconfig --disable fcr

HP SN3000B Specifications

General

Brand	HP
Model	SN3000B
Category	Switch
Language	English