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19-21
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-6965-03, Cisco MDS SAN-OS Release 2.x
Chapter 19 FCIP Configuration
FCIP High Availability
The following characteristics set Ethernet PortChannel solutions apart from other solutions:
• The Gigabit Ethernet link level redundancy ensures a transparent failover if one of the Gigabit
Ethernet links fails.
• Two Gigabit Ethernet ports in one Ethernet PortChannel appear like one logical Gigabit Ethernet
link.
• The FCIP link stays up during the failover.
Ethernet PortChannels and Fibre Channel PortChannels
Ethernet PortChannels offer Ethernet-level redundancy and Fibre Channel PortChannels offer
(E)ISL-level redundancy. FCIP is unaware of any Ethernet PortChannels or Fibre Channel PortChannels.
Fibre Channel PortChannels are unaware of any Ethernet PortChannels, and there is no mapping between
the two (see Figure 19-16).
Figure 19-16 PortChannels at the Fibre Channel and Ethernet Levels
Fibre Channel
FCIP
TCP
IP
Ethernet
Fibre Channel
FCIP
TCP
IP
Ethernet
Ethernet PortChannel
Fibre Channel PortChannel
Gigabit Ethenet link Gigabit Ethenet link Gigabit Ethenet link
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