Brocade Web Tools Administrator's Guide - Supporting Fabric OS v7.0.0 (53-1002152-01, March 2012)
Web Tools Adminstrator’s Guide 167
53-1002152-01
Configuring a port for long distance
14
The Brocade Encryption Switch and the FS8-18 Encryption blade support auto-negotiated link
speeds of 1, 2, 4, and 8 Gbps. The GE ports are always locked at 1 Gbps.
Configuring a port for long distance
When you configure a long-distance ISL, ensure that the ports on both sides of the ISL have the
same configuration in order to avoid fabric segmentation.
To configure a port for long distance, perform the following steps.
1. Open the Switch Administration window as described in “Opening the Switch Administration
window” on page 33.
2. Click Show Advanced Mode.
3. Select the Extended Fabric tab.
4. This step is switch-specific:
For the Brocade 8510-8, 8510-4, DCX and DCX-4S platforms, click the slot subtab that
corresponds to the correct slot for the logical switch.
For the Brocade 300, 5100, 5300, 6510, 7800 Extension, and the Encryption Switch, proceed
directly to the next step.
5. Select a distance that corresponds to the port from the Long Distance menu.
TABLE 15 Long-distance settings and license requirements
Value Description Extended Fabrics License
Required?
L0 No long-distance setting is enabled. The maximum supported link distance
is:
• 10 kilometers at 1 Gbps
• 5 kilometers at 2 Gbps
• 2.5 kilometers at 4 Gbps
• 1 kilometers at 10 Gbps
• 500 meters at 16 Gbps
No
LE Extended normal setting is enabled, 10 km (6 miles) or less. No
LD Dynamic setting is enabled. Buffer credits for the given E_Port are
dynamically configured based on the actual link distance, as long as this is
less than the desired distance. If the actual link distance exceeds the
desired distance, the desired distance is used to allocate the buffers.
The LD-level link can operate at distances up to 500 km at 1 Gbps, 250 km
at 2 Gbps, or 125 km at 4 Gbps, depending on the switch platform and the
availability of frame buffers within the port group.
Yes
LS Static setting is enabled. Buffer credits for the given E_Port are statically
configured based on the desired link distance.
The LS-level link can operate at distances up to 500 km at 1 Gbps, 250 km
at 2 Gbps, or 125 km at 4 Gbit/sec, depending on the switch platform and
the availability of frame buffers within the port group.
For the Brocade DCX 8510-8, Brocade 6510, and Brocade DCX 8510-4, the
buffer credits are 10 through X; where X is proportional to the available
buffers.
Yes