Fabric OS Administrator’s Guide
215
53-1001763-02
Logical fabric overview
10
You connect logical switches to other logical switches in two ways:
•
Using ISLs
•
Using base switches and shared ISLs
Logical fabric and ISLs
Figure 26
shows two physical chassis divided into logical switches.
In
Figure 26
, ISLs are used to connect the logical switches with fabric ID 1 and the logical switches
with fabric ID 15. The logical switches with fabric ID 8 are each connected to a non-Virtual Fabrics
switch. The two logical switches and the non-Virtual Fabrics switch are all in the same fabric, with
fabric ID 8.
FIGURE 26
Logical switches connected to other logical switches through physical ISLs
Figure 27
shows a logical representation of the configuration in
Figure 26
.
FIGURE 27
Logical switches connected to form logical fabrics
The ISLs between the logical switches are
dedicated ISLs
because they carry traffic only for a single
logical fabric. In
Figure 26
, Fabric 128 has two switches (the default logical switches), but they
cannot communicate with each other because they have no ISLs between them and they cannot
use the ISLs between the other logical switches.
Logical switch 8
Fabric ID 8
P9
Logical switch 7
Fabric ID 15
P7
Logical switch 6
Fabric ID 1
P4
Physical chassis 2
P8
P6
P5
P3
P2
P1
Switch
Logical switch 4
Fabric ID 8
P6
Logical switch 3
Fabric ID 15
P5
P4
Logical switch 2
Fabric ID 1
P3
P2
Logical switch 1
(Default logical switch)
Fabric ID 128
P1
Physical chassis 1
Logical switch 5
(Default logical switch)
Fabric ID 128
Fabric 128
Fabric 1
Fabric 15
Fabric 8
SW1
SW8
SW4
SW7
SW3
SW6
SW2
SW5
Summary of Contents for 53-1001763-02
Page 1: ...53 1001763 02 13 September 2010 Fabric OS Administrator s Guide Supporting Fabric OS v6 4 0 ...
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Page 42: ...2 Fabric OS Administrator s Guide 53 1001763 02 ...
Page 54: ...14 Fabric OS Administrator s Guide 53 1001763 02 High availability of daemon processes 1 ...
Page 74: ...34 Fabric OS Administrator s Guide 53 1001763 02 Basic connections 2 ...
Page 102: ...62 Fabric OS Administrator s Guide 53 1001763 02 Audit log configuration 3 ...
Page 214: ...174 Fabric OS Administrator s Guide 53 1001763 02 Management interface security 7 ...
Page 228: ...188 Fabric OS Administrator s Guide 53 1001763 02 Brocade configuration form 8 ...
Page 276: ...236 Fabric OS Administrator s Guide 53 1001763 02 Creating a logical fabric using XISLs 10 ...
Page 404: ...364 Fabric OS Administrator s Guide 53 1001763 02 ...
Page 440: ...400 Fabric OS Administrator s Guide 53 1001763 02 Performance data collection 17 ...
Page 480: ...440 Fabric OS Administrator s Guide 53 1001763 02 F_Port masterless trunking 19 ...
Page 494: ...454 Fabric OS Administrator s Guide 53 1001763 02 Buffer credit recovery 20 ...
Page 574: ...534 Fabric OS Administrator s Guide 53 1001763 02 Hexadecimal overview E ...