Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 161)

Metro VCS using standard-distance ISLs
In order to deploy Metro VCS using standard-distance ISLs, no configuration is required on the ISL. The
default configuration on the 10-Gbps interface by means of the fabric isl enable and fabric trunk
enable commands allows ISL formation with other Brocade VDX switches in the same VCS cluster
automatically. BLDP negotiation takes place to form ISLs for distances up to 30 km. (Refer to
Configuring Brocade VCS Fabrics on page 145.)
Metro VCS using standard ISLs is supported on the following platforms:
• Brocade VDX 6720-60
• Brocade VDX 6730-76
• Brocade VDX 6740, VDX 6740T, and VDX 6740T-1G
• Brocade VDX 8770 with the VDX LC48x10G line card
The following is a typical deployment topology supported for interconnecting data centers by extending
Brocade VCS Ethernet fabrics using standard-distance ISLs. The local VCS clusters are connected to
the Metro VCS clusters by Brocade vLAGs. In this case, local data-center Ethernet fabrics from both
site are not merged while providing seamless Layer 2 extension. For Metro VCS, Brocade standard-
distance ISL trunking is supported, with up to a maximum of eight ISLs to form 80-G trunks.
FIGURE 21 Typical deployment topology for Metro VCS using standard-distance ISLs
The following lists the port groups and number of port groups available on each platform for Metro VCS
using standard-distance ISLs.
Metro VCS using standard-distance ISLs
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