HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.3.x administrator guide (569 - Page 347

/256 SAN Director (FR4-18i blades), Configuring an extended ISL, fabric.ops.mode.longDistance

Page 347 highlights

4/256 SAN Director (FR4-18i blades) For the FR4-18i blade, long distance settings are applicable only to the physical FC_Ports (ports 0-15). Long distance settings are not applicable to virtual FC_Ports (ports 16-31). Table 90 lists the number of ports that can be configured at various distances. Table 90 4/256 SAN Director (FR4-18i blades) Speed (Gbps) 1 2 4 Number of ports allowed at distance (km) 10 km 25 km 50 km 100 km 16 ports 16 ports 16 ports 16 ports 16 ports 16 ports 16 ports 16 ports 8 ports 16 ports 8 ports 4 ports 250 km 6 ports 2 ports n/a 500 km 2 ports n/a n/a Configuring an extended ISL Before configuring an extended ISL, ensure that the following conditions are met. • Extended ISL support for 1Gb switches is limited as follows: • To support extended ISLs, the fabric.ops.mode.longDistance parameter must be set to 1 on all 1Gb switches switches in the fabric. Each switch must be disabled before setting this parameter. • Extended ISLs are not supported between 1Gb switches and other Brocade models. • For fabrics that contain a mix of HP StorageWorks models, the fabric.ops.mode.longDistance parameter must be set to 0 (the default). Under certain circumstances (for example, if you want extended distance between 3xxx switches) this mode must be enabled (set to 1) on switches running Fabric OS v3.x or v4.x. Talk to your switch provider for details. • The ports on both ends of the ISL must have the same configuration. • Use only qualified SFPs. To configure an extended ISL 1. Connect to the switch and log in as admin. 2. If the fabric contains 1Gb switches with extended ISLs, use the switchDisable command to disable the switch and then use the configure command to set the fabric-wide configuration parameter fabric.ops.mode.longDistance to 1 on all switches in the fabric. 3. Enter the portCfgLongDistance command, using the following syntax: portcfglongdistance [slotnumber/]portnumber [distance_level] [vc_translation_link_init] [desired_distance] Fabric OS 5.3.0 administrator guide 359

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Fabric OS 5.3.0 administrator guide
359
4/256 SAN Director (FR4-18i blades)
For the FR4-18i blade, long distance settings are applicable only to the physical FC_Ports (ports 0-15). Long
distance settings are not applicable to virtual FC_Ports (ports 16-31).
Table 90
lists the number of ports that
can be configured at various distances.
Configuring an extended ISL
Before configuring an extended ISL, ensure that the following conditions are met.
Extended ISL support for 1Gb switches is limited as follows:
To support extended ISLs, the
fabric.ops.mode.longDistance
parameter must be set to 1 on
all 1Gb switches switches in the fabric. Each switch must be disabled before setting this parameter.
Extended ISLs are not supported between 1Gb switches and other Brocade models.
For fabrics that contain a mix of HP StorageWorks models, the
fabric.ops.mode.longDistance
parameter must be set to 0 (the default). Under certain circumstances (for example, if you want
extended distance between 3xxx switches) this mode must be enabled (set to 1) on switches running
Fabric OS v3.x or v4.x. Talk to your switch provider for details.
The ports on both ends of the ISL must have the same configuration.
Use only qualified SFPs.
To configure an extended ISL
1.
Connect to the switch and log in as admin.
2.
If the fabric contains 1Gb switches with extended ISLs, use the
switchDisable
command to disable
the switch and then use the
configure
command to set the fabric-wide configuration parameter
fabric.ops.mode.longDistance
to 1 on all switches in the fabric.
3.
Enter the
portCfgLongDistance
command, using the following syntax:
portcfglongdistance
[
slotnumber
/]
portnumber
[
distance_level
] [
vc_translation_link_init
]
[
desired_distance
]
Table 90
4/256 SAN Director (FR4-18i blades)
Speed
(Gbps)
Number of ports allowed at distance (km)
10 km
25 km
50 km
100 km
250 km
500 km
1
16 ports
16 ports
16 ports
16 ports
6 ports
2 ports
2
16 ports
16 ports
16 ports
8 ports
2 ports
n/a
4
16 ports
16 ports
8 ports
4 ports
n/a
n/a