Reference Guide

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.
Routing Traffic
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