McDATA Sphereon 4300 Specifications Page 160

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4
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McDATA Products in a SAN Environment - Planning Manual
Implementing SAN Internetworking Solutions
mSAN Routing An mSAN consists of one or two SAN routers that interconnect up to
six Fibre Channel fabrics. These fabrics are typically dispersed within
a data center or metropolitan campus. If two SAN routers are used,
they are connected with multiple (one to four) Gigabit Ethernet (GbE)
bandwidth IRLs. These GbE connections (using mFCP as the
transport protocol) are characterized by low latency, high bandwidth,
and negligible packet loss.
mSAN Routing Domain
A SAN router reserves a routing domain with proxy Domain_ID 30
(hexadecimal 7E) to enable routing between mSAN fabrics. This
routing domain is visible to all directors and switches in each router-
attached fabric and appears as a virtual switch (with Domain_ID 30)
to SAN management applications. Table 4-1 summarizes the mSAN
routing domain.
NOTE: A reserved routing domain with proxy Domain_ID 31
(hexadecimal 7F) enables iSAN routing.
Table 4-1 mSAN Routing Domain
Domain_ID Area_ID Fabric_ID
1 - 4 1
5 - 8 2
9 - 12 3
13 - 16 4
17 - 20 5
30 21 - 24 6
(Hexadecimal 7E) 25 - 28 7
29 - 32 8
33 - 36 9
37 - 40 10
41 - 44 11
45 - 48 12
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