Brocade Communications Systems Network Advisor 12.3.0, User Manual

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936 Brocade Network Advisor SAN User Manual
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FCIP trunking
22
The way FCIP tunnels and virtual ports map to the physical GbE ports depends on the switch or
blade model. The 8 Gbps Extension Switch and 8 Gbps Extension Blade tunnels are not tied to a
specific GbE port, and may be assigned to any virtual port within the allowed range. The mapping of
GbE ports to tunnels and virtual port numbers is summarized in
Table 71 .
FCIP trunking
FCIP Trunking is a method for managing the use of WAN bandwidth and providing redundant paths
over the WAN to protect against transmission loss. This feature is available only on the 8 Gbps
Extension Switches and 8 Gbps Extension Blades. Trunking is enabled by creating logical circuits
within an FCIP tunnel. A tunnel may have multiple circuits. Each circuit is a connection between a
pair of IP addresses that are associated with source and destination endpoints of an FCIP tunnel,
as shown in
Figure 424 . Each circuit represents a portion of the available Ethernet bandwidth
provided by the GbE ports that are connected to the WAN.
FIGURE 424
FCIP tunnel and FCIP circuits
Design for redundancy and fault tolerance
Multiple FCIP tunnels can be defined between pairs of Extension Switches and Blades, but doing so
defeats the concept of a multiple circuit FCIP tunnel. Defining two tunnels between a pair of
switches or blades rather than one tunnel with two circuits is not as redundant or fault tolerant as
having one multiple circuit tunnel.
TABLE 71 GbE port mapping
Switch or Blade Model GbE ports Tunnels Virtual ports (VE_Ports, VEX_Ports)
8 Gbps Extension Switch GbE ports 0-5 0-8 16-23
8 Gbps Extension blade GbE ports 0-9
10GbE ports 10, 11 0-20 12-21 used by GbE ports (0-9) and by
XGE1
22-31 used by XGE0
WAN
IP Router
IP Router
10.0.0.1
10.0.0.2
10.0.1.1
10.0.1.2
FCIP Circuits
10.0.0.3
10.0.1.3
10.0.0.4 10.0.1.4
10.0.0.5
10.0.1.5
FCIP Tunnel
FCIP Circuits