Brocade Web Tools Administrator's Guide - Supporting Fabric OS v5.3.0 (53-1000435-01, June 2007)

Web Tools Administrator’s Guide 169
Publication Number: 53-1000435-01
Configuring a port for long distance
13
NOTE
In an AD that does not own the switch, only directly owned ports and E-Ports are shown. E-Ports that
are not directly owned are not controllable. Long Distance configuration functionality will be
available for controllable ports only, and non-owned E-Ports are viewable only.
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, to avoid fabric segmentation.
To configure a port for long-distance connection
1. Open the Switch Administration window as described on page 31.
2. Click the Extended Fabric tab.
3. This step is switch-specific:
For Brocade 24000 and 48000 directors, click the slot subtab that corresponds to the correct
slot for the logical switch.
For Brocade 200E, 3250, 3850, 3900, 4012, 4016, 4018, 4020, 4024, 4100, 4900, 5000,
and 7500 switches, proceed directly to the next step.
4. Select a distance that corresponds to the port from the Long Distance drop-down menu.
Depending on the distance selected, this might require an optional license. For information
about the various distances, see Table 10.
If you select a long-distance setting of LD or LS, you must also type a value in the Desired
Distance column for that port number:
TABLE 10 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 km, 5 km, or 2.5 km for ports at speeds of 1 Gbit/sec, 2 Gbit/sec, and 4
Gbit/sec, respectively.
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 Gbit/sec, 250
km at 2 Gbit/sec, or 125 km at 4 Gbit/sec, 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 Gbit/sec, 250
km at 2 Gbit/sec, or 125 km at 4 Gbit/sec, depending on the switch platform
and the availability of frame buffers within the port group
Yes