Trunking Over Long Distance Fabrics; Table 86 Trunking Support For Brocade 4100 And 4900 - Brocade Communications Systems 53-1001763-02 Administrator's Manual

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Trunking over long distance fabrics

Trunking over long distance fabrics

In long-distance fabrics, if a port speed is set to autonegotiate, then the maximum speed, which is
8 Gbps, is assumed for reserving buffers for the port. If the port is only running at 2 Gbps, this
wastes buffers. On the Brocade 300, 4100, 4900, 5100, 5300, 5410, 5424, 5450, 5480, 7800,
8000, VA-40FC, and 48000 platforms, for long-distance ports, you should specify the port speed
instead of setting it to autonegotiate.
Support for 8 Gbps is only between the following:
•
•
•
The Brocade 300, 5100, 5300, 5410, 5424, 5450, 5480, and VA-40FC support long-distance
modes L0, LE, LS, and LD. The distance supported on each platform depends on the available
buffers, number of back-end ports, and number of offline ports.
In addition to the criteria listed in
observe the following criteria for trunking over extended fabrics:
•
•
•
For additional information on configuring long distance, see
page 443.
platforms.
TABLE 86
Long distance mode
LE
LD
LD
LD
Table 87
DCX Backbone, and the DCX-4S platforms and supported blades.
430
4: 12->892 10:00:00:05:1e:46:42:01
13->893 10:00:00:05:1e:46:42:01
Tx: Bandwidth 16.00Gbps, Throughput 1.67Gbps (12.12%)
Rx: Bandwidth 16.00Gbps, Throughput 1.66Gbps (12.11%)
Tx+Rx: Bandwidth 32.00Gbps, Throughput 3.33Gbps (12.11%)
Between the Brocade 48000 and Brocade DCX (including DCX-4S) platforms with the
appropriate 8-Gbps blades
Between Brocade DCX (including DCX-4S) platforms with the appropriate 8-Gbps blades
Between Brocade 300, 5100, 5300, 5410, 5424, 5450, 5480, and VA-40FC switches with the
8 Gbps SFPs installed.
It is supported only on switches running Fabric OS v6.1.0 and later.
Extended Fabrics and ISL Trunking licenses are required on all participating switches.
When configuring long distance, the portCfgLongDistance --vc_translation_link_init
parameter must be set the same on all ports in an extended fabric.
Table 86 describes Trunking over long distance support for the Brocade 4100 and 4900
Trunking support for Brocade 4100 and 4900
Distance
10 km
200 km
250 km
500 km
on page 431 describes Trunking over long distance support for the Brocade 48000, the
3 deskew 15 MASTER
3 deskew 15
"Criteria for managing trunking connections"
Number of 2 Gbps ports
32 (four 8-port trunks)
3 (one 3-port trunk)
3 (one 3-port trunk)
0
on page 426,
"Configuring an extended ISL"
Number of 4 Gbps ports
32 (four 8-port trunks)
0
0
0
Fabric OS Administrator's Guide
on
53-1001763-02