Network OS Administration Guide

Supporting Network OS 6.0.1a

Part Number: 53-1003768-04

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-, 40-, and 100-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 for 10G and 10 km for 40G and 100G interfaces. (Refer to Configuring Brocade VCS Fabrics.)

Metro VCS using standard ISLs is supported on the following platforms:

  • Brocade VDX 2740
  • Brocade VDX 2746
  • Brocade VDX 6740, VDX 6740T, and VDX 6740T-1G
  • Brocade VDX 8770 with the LC48X10G line card
  • Brocade VDX 8770 with the LC27X40G line card
  • Brocade VDX 8770 with the LC12X40G line card
  • Brocade VDX 8770 with the LC6X100G line card
  • Brocade VDX 6940-36Q
  • Brocade VDX 6940-144S

The following figure is an example 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 supports trunks up to a maximum of 80 Gbps for the Brocade VDX 8770 and Brocade VDX 6740 series platforms, or 120 Gbps for Brocade VDX 6940 series platforms.

Figure 23. Typical deployment topology for Metro VCS using standard-distance ISLs

The following table lists the port groups and number of port groups available on each platform for Metro VCS using standard-distance ISLs.

Table 22 Standard Metro VCS port-group schema

Platform

Port groups

Number of port groups on platform

Brocade VDX 6740

1-16, 17-32, 33-40, 41-48, 49-50, 51-52

6

Brocade VDX 6740T

49-50, 51-52 (40G interfaces only)

2

Brocade VDX 6740T-1G

49-50, 51-52 (40G interfaces only)

2

Brocade VDX 8770 (LC6X100G)

1-2, 3-4, 5-6

3

Brocade VDX 8770 (LC27X40G)

1-3, 4-6, 7-9, 10-12, 13-15, 16-18, 19-21, 22-24, 25-27

9

Brocade VDX 8770 (LC12X40G)

1-2, 3-4, 5-6, 7-8, 9-10, 11-12

6

Brocade VDX 8770 (LC48x10G line card)

1–8, 9–16, 17–24, 25–32, 33–40, 41–48

6

Brocade VDX 6940-36Q

1-6, 7-12, 13-18, 19-24, 25-30, 31-36

6

Brocade VDX 6940-144S

1-24+61-72, 25-48+73-84, 49-60+97-102, 85-96+1-3-108

4