.Part 2 Fabric Infrastructure Rules HP SAN Design Reference Guide 785352-001

For more information, see Figure 56 (page 119).

Tested to 1,200, but can support up to 1,500 or 2,000 (with reduced number of maximum edge fabrics) on v6.3 and higher.

Contact your HP representative for further details.

Tested to 3,000, but will support up to 5,000 on FOS v6.3 and higher (all backbone FCRs with FOS v6.0.0 and higher). Contact

your HP representative for further details.

400 MP Router and MP Router Blade hop count

The 400 MP Router and MP Router Blade are counted in the same way as a Fibre Channel switch

when determining the fabric hop count. See “MP Router with seven hops” (page 119). Devices

communicating across fabrics through an MP Router must adhere to both the B-series 7-hop limit

within an edge fabric and the MP Router 12-hop limit.

400 MP Router and MP Router Blade usage

Use an MP Router Blade:

• If you want to add multiple fabrics to a Meta SAN, and one of those fabrics contains a 4/256

SAN Director, DC SAN Backbone Director, or DC04 SAN Director with an available slot for

an MP Router Blade

NOTE: All devices connected to the SAN Director Fibre Channel ports are part of a backbone

fabric.

• If you want to share up to 256 local devices in a backbone fabric with multiple edge fabrics

• For FCIP, if there are 4/256 SAN Directors, DC SAN Backbone Directors, or DC04 SAN

Directors at both the local site and remote site

Use a 400 MP Router:

• If you do not have a 4/256 SAN Director, DC SAN Backbone Director, or DC04 SAN

Director, and do not plan to use one

• If you have a 4/256 SAN Director, DC SAN Backbone Director, or DC04 SAN Director, and

do not want to use it as a backbone fabric

• For FCIP, if there are no 4/256 SAN Directors, DC SAN Backbone Directors, or DC04 SAN

Directors at the local site or remote site

For use-case configuration examples, see the 400 MP Router and MP Router Blade use-case white

papers at http://h18006.www1.hp.com/storage/sanwhitepapers.html?jumpid=reg_R1002_USEN.

MP Router fabric rules

This section describes the fabric rules for the MP Router and other factors you should consider when

building B-series fabrics that contain MP Routers. The fabric rules for the MP Router apply to SANs

that include the same operating system and storage products as the B-series switches. See

“Operating systems and storage products” (page 103).

For information about configuring the MP Router for FCIP, see “B-series MP Router” (page 292).

Table 34 (page 114) describes the rules for creating fabrics with MP Routers.

Table 34 MP Router fabric rules

DescriptionRule number

All configurations must use the default settings for R_A_TOV (10,000 milliseconds) and E_D_TOV

(2,000 milliseconds).

Devices connected directly to the MP Router or the backbone fabric are for iSCSI access only and

cannot be routed via an LSAN zone to an edge fabric (Figure 53 (page 116)).

Devices connected to edge fabrics are for local and routed access only and cannot be routed via an

LSAN to an iSCSI port on the MP Router (Figure 54 (page 117)).

114 B-series switches and fabric rules