Configuring an extended isl – Dell POWEREDGE M1000E User Manual
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Fabric OS Administrator’s Guide
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Configuring an extended ISL
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Configuring an extended ISL
Before configuring an extended ISL, ensure that the following conditions are met:
•
The ports on both ends of the ISL are operating at the same port speed, and can be configured
at the same distance level without compromising local switch performance.
NOTE
A long-distance link also can be configured to be part of a trunk group. Two or more
long-distance links in a port group form a trunk group when they are configured for the same
speed, the same distance level, and their link distances are nearly equal. For information on
trunking concepts and configurations, refer to
Chapter 19, “Managing Trunking Connections”
.
•
Only qualified Brocade SFPs are used. Only Brocade-branded or certain Brocade-qualified
SFPs are supported on the 8 Gbps platforms.
1. Connect to the switch and log in using an account assigned to the admin role.
2. Enter the switchDisable command.
3. Enter the configure command to set the switch fabric-wide configurations. You can set the
following fabric-wide settings:
(* = multiplication symbol)
4. For 8 Gbps platforms only, enter the portCfgFillword command to set ARB as the fill word.
portcfgfillword [slot/]port, mode
The mode parameter in this command must be set to 1 if the vc_translation_link_init
parameter in the portCfgLongDistance command (in the next step) is set to 1.
5. Enter the portCfgLongDistance command.
portcfglongdistance [slot/]port [distance_level] [vc_translation_link_init]
[desired_distance]
6. Repeat
for the remote extended ISL port. Both the local and remote
extended ISL ports must be configured to the same distance level. When the connection is
initiated, the fabric will reconfigure.
Example
The following example configures slot 1, port 2 to support a 100 km link in LS mode and be
initialized using the extended link initialization sequence. This example is for an 8 Gbps platform.
switch:admin> portcfgfillword 1/2 1
switch:admin> portcfglongdistance 1/2 LS 1 100
Reserved Buffers = 406
Warning: port may be reserving more credits depending on port speed.
switch:admin> portshow 1/2
portName:
portHealth: OFFLINE
Field Type
Default
Range
Domain
Number
1
Varies
R_A_TOV
Number
1000
E_D_TOV * 2 to 120000
E_D_TOV
Number 2000
1000
to
R_A_TOV/2
WAN_TOV
Number 0
0
to
R_A_TOV/4
MAX_HOPS Number 7
7
to
19