HP StorageWorks XPath OS 7.4.X Administrator Guide (AA-RVHDD-TE, February 2006)

XPath OS 7.4.x administrator guide 101
A Hard zoning background
In XPath OS hard zoning, the frame source and destination addresses are compared to permitted
addresses at the MP Router ingress F_Port or FL_Port (for devices directly attached to the MP Router) or at
the egress F_Port or FL_Port (for devices directly attached to a non-HP switch). You do not need to know the
details of hard zoning to configure zones or for routine administration of the MP Router.
Each MP Router maintains a zone server. The zone server distributes to the ports allowed combinations of
source address/destination address pairs. Hard zoning supports both WWN and domain,port member
types.
For hosts and targets directly connected to an MP Router, the source/destination pair for each frame
entering the MP Router through an F_Port or FL_Port is checked for zoning compliance. (See Figure 20 for
an picture of this configuration.) The frame is discarded if the source/destination communication is not
allowed by the zone rules.
For frames originating from the host, the source/destination combination is checked against the zone
membership list at MP Router 1, Port M. For frames originating at the target, the source/destination
combination is checked against the zone membership list at MP Router 1, Port N.
Figure 20 Host and target directly connected to the MP Router
For hosts and targets directly connected to a homogeneous fabric with multiple MP Routers, the
source/destination pair for each frame entering the MP Router through an F_Port or FL_Port is checked for
zoning compliance. The frame is discarded if source/destination communication is not allowed by the
zone rules. Figure 21 illustrates this combination.
For frames originating from the host, the source/destination combination is checked against the zone
membership list at MP Router 1, Port W. For frames originating at the target, the source/destination
combination is checked against the zone membership list at MP Router 2, Port Z.
Figure 21 Host and target in a homogeneous fabric
For frames entering an MP Router through an E_Port (Port M in Figure 22), the source domain is checked at
the E_Port; if the frame source domain is not an MP Router, the frame is tagged and passed through to the
proper egress port, Port N in Figure 22.
If the originating source domain is an MP Router, the zoning check has already been performed; no further
zone enforcement is required. This is the situation shown in Figure 21. At the egress port, the S_ID/D_ID
pair is checked.
Host
Multiprotocol Router
Target
Port
M
Port N
Multiprotocol Router 1 Multiprotocol Router 2
Port
W
Port
Y
Port X
Port Z
Host
Target