Configuring A Port For Long Distance - Brocade Communications Systems StoreFabric SN6500B Administrator's Manual

13

Configuring a port for long distance

TABLE 15
Value
LD
LS
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
2. Click Show Advanced Mode.
3. Select the Extended Fabric tab.
4. This step is switch-specific:
5. Select a distance that corresponds to the port from the Long Distance menu.
154
Long-distance settings and license requirements (Continued)
Description
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.
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, Brocade 6520, and Brocade
DCX 8510-4, the buffer credits are 10 through X; where X is proportional to
the available buffers.
window" on page 31.
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, VA-40FC, 6505, 6510, 6520, 8000, 7800 Extension, and
the Encryption Switch, proceed directly to the next step.
Depending on the distance selected, this might require a license. For information about the
various distances, refer to
If you select a long-distance setting of LD or LS, you must also enter a value in the Desired
Distance column for that port number. For LD or LS options, the Buffer Needed column is
made editable to specify the buffer needed value. On changing the buffer needed value, the
Frame Size and Desired Distance values cannot be changed.
a. Double-click the Desired Distance field for the port, as shown in
b. Enter a number in the field to indicate the distance in kilometers. The allowed values
depend on the port capability:
•
If the port capability is 8 GB, type a number between 10 and 63 inclusive.
Table 15.
Extended Fabrics License
Required?
Yes
Yes
"Opening the Switch Administration
Figure 35.
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