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Gateway links, Figure 7, The seven data – Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) User Manual

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FIGURE 7 Virtual channels on a QoS-enabled ISL

Gateway links

A gateway merges SANs into a single fabric by establishing point-to-point E_Port connectivity between
two Fibre Channel switches that are separated by a network with a protocol such as IP or SONET.

Except for link initialization, gateways are transparent to switches; the gateway simply provides E_Port
connectivity from one switch to another. The following figure shows two separate SANs, A-1 and A-2,
merged together using a gateway.

Gateway links

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