HP 1606 Fabric OS FCIP Administrators Guide v6.4.0 (53-1001766-01, November 20 - Page 56

Virtual ports and FCIP tunnels, Virtual Port Types

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3 FCIP Design Considerations for the 7500 switch and FR4-18i blade Virtual ports and FCIP tunnels 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 2 active FC ports and 1 virtual port per GE interface. Each GbE interface can support up to 8 FCIP tunnels which are represented as 8 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. TABLE 7 Tunnel and virtual port numbering GbE port Tunnels Virtual ports ge0 0 16 1 17 2 18 3 19 4 20 5 21 6 22 7 23 ge1 0 24 1 25 2 26 3 27 4 28 5 29 6 30 7 31 Virtual Port Types Virtual ports may be defined as VE_Ports or VEX_Ports: • VE_Ports (virtual E_Ports) are used to create interswitch links (ISLs) through an FCIP tunnel. If VE_Ports are used on both ends of an FCIP tunnel, the fabrics connected by the tunnel are merged. • VEX_Ports enable FC-FC Routing Service functionality over an FCIP tunnel. VEX_Ports enable interfabric links (IFLs). If a VEX_Port is on one end of an FCIP tunnel, the fabrics connected by the tunnel are not merged. The other end of the tunnel must be defined as a VE_Port. VEX_Ports are not used in pairs. Figure 15 on page 43 illustrates a portion of a Fibre Channel network that uses FCIP ISLs, which are VE_Ports connected over the IP WAN network, to join the office and data center SANs into a single larger SAN. 42 Fabric OS FCIP Administrator's Guide 53-1001766-01

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42
Fabric OS FCIP Administrator’s Guide
53-1001766-01
FCIP Design Considerations for the 7500 switch and FR4-18i blade
3
Virtual ports and FCIP tunnels
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 2 active FC ports
and
1 virtual port per GE interface
. Each GbE interface can support up to 8 FCIP tunnels which
are represented as 8 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
.
Virtual Port Types
Virtual ports may be defined as VE_Ports or VEX_Ports:
•
VE_Ports (virtual E_Ports) are used to create interswitch links (ISLs) through an FCIP tunnel. If
VE_Ports are used on both ends of an FCIP tunnel, the fabrics connected by the tunnel are
merged.
•
VEX_Ports enable FC-FC Routing Service functionality over an FCIP tunnel. VEX_Ports enable
interfabric links (IFLs). If a VEX_Port is on one end of an FCIP tunnel, the fabrics connected by
the tunnel are not merged. The other end of the tunnel must be defined as a VE_Port.
VEX_Ports are not used in pairs.
Figure 15
on page 43 illustrates a portion of a Fibre Channel network that uses FCIP ISLs, which
are VE_Ports connected over the IP WAN network, to join the office and data center SANs into a
single larger SAN.
TABLE 7
Tunnel and virtual port numbering
GbE port
Tunnels
Virtual ports
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