McDATA StorageWorks 2/140 - Director Switch Planning Manual page 277

• Negotiate SLA - Network service providers provide IP WAN
transport services in accordance with a negotiated service level
agreement (SLA). Ensure the SLA specifies the link availability,
peak available bandwidth, latency, security level, monitoring
level, packet loss, and mean time to repair (MTTR).
• Intelligent port addresses - Each intelligent port that supports
Internet Fibre Channel protocol (iFCP) requires an IP address and
subnet mask. Depending on the gateway (next hop router), the
port may require an internal IP address and external IP address.
If there is a layer 2 connection between SAN routers (such as
WDM, SONET, or SDH), no gateway addressing is required
because there are no intervening layer 3 devices and iFCP ports
are on the same subnet. If there is a layer 3 connection between
SAN routers, gateway addressing must be specified because iFCP
ports are on different subnets.
• Configure and test transport network - The IP WAN transport
network between SAN routers must be configured, operational,
tested, and able to support bidirectional storage traffic.
Specifically:
— SAN routers must be correctly configured and able to route
traffic between end subnets.
— Devices that are part of the IP WAN infrastructure should be
set to the appropriate operational mode, symmetrical flow
control should be enabled, and ports should be correctly
designated to support storage traffic or management traffic.
— As part of a test plan, ping the IP WAN to ensure subnet
connectivity.
• Establish zone policy - SAN Routing provides flexibility with
respect to zoning behavior and interactions between a router and
attached fabrics. The zone policy specifies how zoning
information is synchronized between a SAN router and attached
fabrics. It is not a requirement that all router-attached fabrics use
the same zone policy. Refer to
information.
• Provide accurate documentation - Accurate and up-to-date
documentation that records all facility locations, contact
personnel, device names, network addresses, port numbers, link
types, cable types, protocols, and equipment makes and models is
required.
Configuration Planning Tasks
Routed SAN Zoning for detailed
Configuration Planning Tasks
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