Brocade Communications Systems FastIron - Configuring sub-ports

Configuring sub-ports
After 40 Gbps ports are successfully configured and activated for breakout, the sub-ports are available
for configuration.
NOTE
Sub-port configuration persists only as long as the original 40 Gbps port is configured for breakout.
Once breakout is removed and the device is reloaded, the sub-ports and their configuration are also
removed.
NOTE
When a breakout cable is removed, the breakout configuration still exists. The user should manually
issue the no breakout command to change a breakout port to a regular port.
Once a 40 Gbps port is broken out, the configuration is saved (with the write memory command), and
the unit is reloaded with the updated configuration, four sub-ports are available for detailed
configuration.
The sub-ports are configured like any other port; however, special four-tuple notation is required to
reference them. Regular ports are identified by three-tuple notation; that is, by three numbers separated
by a forward slash to indicate unit, slot, and port. For example 1/2/3 designates unit 1/slot 2/port 3. To
designate sub-ports, you must add a fourth identification number, for example, 1/2/3:4. The four 10
Gbps sub-ports for port 1/2/3 can be represented as 1/2/3:1, 1/2/3:2, 1/2/3:3, and 1/2/3:4.
The following example shows no breakout on port 1/2/4, a 40 Gbps port that is up.
device# show interface brief
Port Link State Dupl Speed Trunk Tag Pvid Pri MAC Name
1/1/1 Down None None None None No 1 0 cc4e.
2439.3700
1/1/2 Down None None None None No 1 0 cc4e.
2439.3701
1/1/3 Down None None None None No 1 0 cc4e.
2439.3702
1/1/4 Down None None None None No 1 0 cc4e.
2439.3703
1/1/5 Down None None None None No 1 0 cc4e.
2439.3704
1/1/6 Down None None None None No 1 0 cc4e.
2439.3708
1/1/7 Down None None None None No 1 0 cc4e.
2439.370c
1/1/8 Down None None None None No 1 0 cc4e.
2439.3710
1/1/9 Down None None None None No 1 0 cc4e.
2439.3714
1/1/10 Down None None None None No 1 0 cc4e.
2439.3718
1/1/11 Down None None None None No 1 0 cc4e.
2439.371c
1/1/12 Down None None None None No 1 0 cc4e.
2439.3720
1/1/13 Down None None None None No 1 0 cc4e.
2439.3724
1/1/14 Down None None None None No 1 0 cc4e.
2439.3728
1/1/15 Down None None None None No 1 0 cc4e.
2439.372c
1/1/16 Down None None None None No 1 0 cc4e.
2439.3730
1/1/17 Down None None None None No 1 0 cc4e.
2439.3734
1/1/18 Down None None None None No 1 0 cc4e.
2439.3735
Configuring sub-ports
FastIron Ethernet Switch Administration Guide 379
53-1003625-01