Fabric OS FCIP Administrator’s Guide 41
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FCIP Design Considerations for the 7500 switch and FR4-18i blade
3
7500 switch and FR4-18i blade ports
Each Brocade 7500 Extension Switch with an upgraded license and FR4-18i blade presents 16 FC
ports and 16 virtual ports. The Brocade 7500E Extension Switch presents only two active FC ports
and one virtual port per GbE interface. Each GbE interface can support up to eight FCIP tunnels
which are represented as eight virtual ports on ge0 and 8 virtual ports on ge1. The mapping of
tunnels on ge0 and ge1 to virtual port numbers is represented in Table 7.
FCIP Design Considerations for the 7500 switch and FR4-18i blade
The following are general design considerations when configuring the Brocade 7500 switch and
the FR4-18i blade:
• The Brocade 7500 and FR4-18i blade can have up to 8 tunnels per 1GE interface.
• Source and destination IP addresses are defined on the FCIP tunnel. FCIP circuits are not
supported.
• If the source and destination IP addresses are not on the same subnet, a IP static route must
be defined.
• When an FR4-18i blade is installed on a DCX that includes FC8-64 blades, ports 0 - 55 of the
FC8-64 blade can route to FR4-18i VE_ports and vice versa, but ports 56-63 cannot route to
FR4-18i VE_ports. That means that if ports 56 - 63 and FR4-18i VE_ports are on the default
switch or on the same logical switch in a Virtual Fabrics (VF) configuration, those ports will not
be able to send traffic between each other. There are no general restrictions regarding FR4-18i
blades and FC8-64 blades coexisting in the same chassis. Furthermore, there are no specific
coexistence restrictions in the same chassis if ports 56-63 of the FC8-64 blade and the
FR4-18i blade VE_ports are on different logical switches or not part of the default switch and
therefore are not allowed to route to each other. This restriction does not apply to the DCX-4S.
On a DCX-4S, ports 0 - 63 of the FC8-64 blade can route to FR4-18i VE_ports and vice versa.
TABLE 6 7500 switch and FR4-18i blade tunnel and virtual port numbering
Switch or
Blade
GbE ports Tunnels Virtual ports
7500 switch
FR4-18i
blade
ge0 0
1
2
3
4
5
6
7
16
17
18
19
20
21
22
23
ge1 0
1
2
3
4
5
6
7
24
25
26
27
28
29
30
31