HP StorageWorks 1606 Brocade Fabric OS Administrator's Guide v6.3.0 (53-100133 - Page 436

Top Talkers, Traffic Isolation Routing

Page 436 highlights

18 Top Talkers Top Talkers The Top Talkers feature provides real-time information about the top "n" bandwidth-consuming flows from a set of a large number of flows passing through a specific port in the network. You can use Top Talkers to identify the SID/DID pairs that consume the most bandwidth and can then configure them with certain QoS attributes so they get proper priority. The Top Talkers feature is part of the licensed Advanced Performance Monitoring feature. See "Top Talker monitors" on page 386 for detailed information about Top Talkers. Traffic Isolation Routing The Traffic Isolation Routing feature allows you to control the flow of interswitch traffic by creating a dedicated path for traffic flowing from a specific set of source ports (N_Ports). For example, you might use Traffic Isolation Routing for the following scenarios: • To dedicate an ISL to high priority, host-to-target traffic. • To force high volume, low priority traffic onto a given ISL to limit the effect on the fabric of this high traffic pattern. • To ensure that requests and responses of FCIP-based applications such as tape pipelining use the same VE_Port tunnel across a metaSAN. Traffic Isolation Routing does not require a license. Traffic isolation is implemented using a special zone, called a Traffic Isolation zone (TI zone). A TI zone indicates the set of N_Ports and E_Ports to be used for a specific traffic flow. When a TI zone is activated, the fabric attempts to isolate all inter-switch traffic entering from a member of the zone to only those E_Ports that have been included in the zone. The fabric also attempts to exclude traffic not in the TI zone from using E_Ports within that TI zone. Figure 49 shows a fabric with a TI zone consisting of the following: • N_Ports: • E_Ports: "1,7", "1,8", "4,5", and "4,6" "1,1", "3,9", "3,12", and "4,7" The dotted line indicates the dedicated path from Domain 1 to Domain 4. Domain 1 7 1 8 9 2 Domain 3 9 10 12 FIGURE 49 = Dedicated Path = Ports in the TI zone 7 6 5 4 Domain 4 Traffic Isolation zone creating a dedicated path through the fabric 394 Fabric OS Administrator's Guide 53-1001336-01

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394
Fabric OS Administrator’s Guide
53-1001336-01
Top Talkers
18
Top Talkers
The Top Talkers feature provides real-time information about the top “n” bandwidth-consuming
flows from a set of a large number of flows passing through a specific port in the network. You can
use Top Talkers to identify the SID/DID pairs that consume the most bandwidth and can then
configure them with certain QoS attributes so they get proper priority.
The Top Talkers feature is part of the licensed Advanced Performance Monitoring feature. See
“Top
Talker monitors”
on page 386 for detailed information about Top Talkers.
Traffic Isolation Routing
The Traffic Isolation Routing feature allows you to control the flow of interswitch traffic by creating a
dedicated path for traffic flowing from a specific set of source ports (N_Ports). For example, you
might use Traffic Isolation Routing for the following scenarios:
To dedicate an ISL to high priority, host-to-target traffic.
To force high volume, low priority traffic onto a given ISL to limit the effect on the fabric of this
high traffic pattern.
To ensure that requests and responses of FCIP-based applications such as tape pipelining use
the same VE_Port tunnel across a metaSAN.
Traffic Isolation Routing does not require a license.
Traffic isolation is implemented using a special zone, called a
Traffic Isolation zone
(TI zone). A TI
zone indicates the set of N_Ports and E_Ports to be used for a specific traffic flow. When a TI zone
is activated, the fabric attempts to isolate all inter-switch traffic entering from a member of the
zone to only those E_Ports that have been included in the zone. The fabric also attempts to exclude
traffic not in the TI zone from using E_Ports within that TI zone.
Figure 49
shows a fabric with a TI zone consisting of the following:
N_Ports:
“1,7”, “1,8”, “4,5”, and “4,6”
E_Ports:
“1,1”, “3,9”, “3,12”, and “4,7”
The dotted line indicates the dedicated path from Domain 1 to Domain 4.
FIGURE 49
Traffic Isolation zone creating a dedicated path through the fabric
= Dedicated Path
Domain 1
Domain 3
Domain 4
1
9
9
2
10
4
= Ports in the TI zone
6
7
12
7
8
5