Dell POWEREDGE M1000E - Manual (Page 106)

66 Fabric OS Administrator’s Guide
53-1001763-02
Inter-switch links
4
Inter-switch links
An inter-switch link (ISL) is a link between two switches, E_Port-to-E_Port. The ports of the two
switches automatically come online as E_Ports, once the login process finishes successfully. For
more information on the login process refer to
Chapter 1, “Understanding Fibre Channel Services” .
FIGURE 6 New switch added to existing fabric
You can connect new switches to existing switches and this expands your fabric. Figure 6 shows a
new switch being added into an existing fabric. The thicker red line is the newly formed ISL. When
connecting two switches together, you need to verify that the following parameters are different:
• Domain ID
• Switch name
• Chassis name
You must also verify the following fabric parameters are identical on each switch for a fabric to
merge:
• R_A_TOV
• E_D_TOV
• Data field size
• Sequence level switching
• Disable device probing
• Suppress class F traffic
• Per-frame route priority
• BB credit
• PID format