About Reordering Network Frames; About Reordering San Port Channel Frames - Cisco nexus 5000 series Cli Configuration Manual

Chapter 1 Configuring Fibre Channel Routing Services and Protocols
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
This section includes the following topics:
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About Reordering Network Frames

When you experience a route change in the network, the new selected path may be faster or less
congested than the old route.
Figure 1-4
Switch 1
In Figure
may be delivered before Frame 1 and Frame 2.
If the in-order guarantee feature is enabled, the frames within the network are delivered as follows:
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About Reordering SAN Port Channel Frames

When a link change occurs in a SAN port channel, the frames for the same exchange or the same flow
can switch from one path to another faster path.
OL-16597-01
About Reordering Network Frames, page 1-11
About Reordering SAN Port Channel Frames, page 1-11
About Enabling In-Order Delivery, page 1-12
Enabling In-Order Delivery Globally, page 1-12
Enabling In-Order Delivery for a VSAN, page 1-13
Displaying the In-Order Delivery Status, page 1-13
Configuring the Drop Latency Time, page 1-14
Displaying Latency Information, page 1-14
Route Change Delivery
Switch 2
Frame 2
1-4, the new path from Switch 1 to Switch 4 is faster. In this scenario, Frame 3 and Frame 4
Frames in the network are delivered in the order in which they are transmitted.
Frames that cannot be delivered in order within the network latency drop period are dropped inside
the network.
Switch 3
Frame 1
Frame 4 Frame 3
Switch 4
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
In-Order Delivery
Old path
New path
1-11