HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.3.x administrator guide (569 - Page 370

Supported switches for broadcast zones, Broadcast zones and Admin Domains

Page 370 highlights

Broadcast zones do not function in the same way as other zones. A broadcast zone does not restrict access to its members in any way. If you want to restrict access to any devices in a broadcast zone, you must also include those devices in a regular zone. To restrict broadcast frames reaching broadcast-incapable devices, create a broadcast zone and populate it with the devices that are capable of handling broadcast packets. Devices that cannot handle broadcast frames must be kept out of the broadcast zone so that they do not receive any broadcast frames. You create a broadcast zone the same way you create any other zone except that a broadcast zone must have the name "broadcast" (case-sensitive). You can set up and manage broadcast zones using the standard zoning commands, which are described in Creating and maintaining zones, page 383. Many applications (such as ping) send broadcast as well as unicast packets as part of their operation. For successful operation of these applications, you must set up a broadcast zone (with all the devices that are capable of handling broadcast frames) as well as regular zones (which group the devices that are to communicate with each other). Supported switches for broadcast zones Broadcast zoning is enforced only for Fabric OS v5.3.x or later switches. If the fabric contains switches running Fabric OS versions earlier than v5.3.x, then all devices connected to those switches receive broadcast packets, even if they are members of a broadcast zone. Broadcast zones and Admin Domains Each Admin Domain can have only one broadcast zone. However, all of the broadcast zones from all of the Admin Domains are considered as a single consolidated broadcast zone. Broadcast packets are forwarded to all the ports that are part of the broadcast zone for any Admin Domain and that have membership in that Admin Domain. Figure 28 illustrates how broadcast zones work with Admin Domains. Figure 28 shows a fabric with five devices and two Admin Domains, AD1 and AD2. Each Admin Domain has two devices and a broadcast zone. "1,1" "2,1" "3,1" "4,1" AD1 broadcast "1,1; 3,1; 5,1" AD2 broadcast "2,1; 3,1; 4,1" "5,1" "1,1" "3,1; 4,1" broadcast "1,1; 3,1; 4,1" Figure 28 Broadcast zones and Admin Domains The dotted box represents the consolidated broadcast zone, which contains all of the devices that will receive broadcast packets. The consolidated broadcast zone is not an actual zone, but is just an abstraction used for explaining the behavior. • The broadcast zone for AD1 includes member devices "1,1", "3,1" and "5,1"; however, "3,1" and "5,1" are not members of AD1. Consequently, from the AD1 broadcast zone, only "1,1" is added to the consolidated broadcast zone. 378 Administering Advanced Zoning

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378
Administering Advanced Zoning
Broadcast zones do not function in the same way as other zones. A broadcast zone does not restrict
access
to its members in any way. If you want to restrict access to any devices in a broadcast zone, you must also
include those devices in a regular zone.
To restrict broadcast frames reaching broadcast-incapable devices, create a broadcast zone and populate
it with the
devices that are capable of handling broadcast packets
. Devices that cannot handle broadcast
frames must be kept out of the broadcast zone so that they do not receive any broadcast frames.
You create a broadcast zone the same way you create any other zone except that a broadcast zone must
have the name “broadcast” (case-sensitive). You can set up and manage broadcast zones using the
standard zoning commands, which are described in
Creating and maintaining zones
, page 383.
Many applications (such as ping) send broadcast as well as unicast packets as part of their operation. For
successful operation of these applications, you must set up a broadcast zone (with all the devices that are
capable of handling broadcast frames) as well as regular zones (which group the devices that are to
communicate with each other).
Supported switches for broadcast zones
Broadcast zoning is enforced only for Fabric OS v5.3.x or later switches. If the fabric contains switches
running Fabric OS versions earlier than v5.3.x, then all devices connected to those switches receive
broadcast packets, even if they are members of a broadcast zone.
Broadcast zones and Admin Domains
Each Admin Domain can have only one broadcast zone. However, all of the broadcast zones from all of
the Admin Domains are considered as a single consolidated broadcast zone.
Broadcast packets are forwarded to all the ports that are part of the broadcast zone for any Admin
Domain and that have membership in that Admin Domain.
Figure 28
illustrates how broadcast zones work with Admin Domains.
Figure 28
shows a fabric with five
devices and two Admin Domains, AD1 and AD2. Each Admin Domain has two devices and a broadcast
zone.
Figure 28
Broadcast zones and Admin Domains
The dotted box represents the consolidated broadcast zone, which contains all of the devices that will
receive broadcast packets. The consolidated broadcast zone is not an actual zone, but is just an
abstraction used for explaining the behavior.
The broadcast zone for AD1 includes member devices “1,1”, “3,1” and “5,1”; however, “3,1” and
“5,1” are not members of AD1. Consequently, from the AD1 broadcast zone, only “1,1” is added to the
consolidated broadcast zone.
broadcast
"1,1;
3,1;
5,1"
"1,1"
"2,1"
broadcast
"2,1;
3,1;
4,1"
"3,1"
"4,1"
"5,1"
broadcast
"1,1;
3,1;
4,1"
"1,1"
"3,1;
4,1"
AD1
AD2