In-Order Delivery; About Reordering Network Frames - Cisco Nexus 5000 Series Configuration Manual
Nx-os san switching configuration guide
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Also See for Nexus 5000 Series:
- Cli configuration manual (660 pages) ,
- Configuration manual (334 pages) ,
- Command reference manual (196 pages)
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In-Order Delivery
Command or Action
Step 5
switch(config)#fcroute fcid interface fc slot/port
domain domain-id metric value remote vsan
vsan-id
Step 6
switch(config)#fcroute fcid netmask interface
fc slot/port domain domain-id vsan vsan-id
In-Order Delivery
In-order delivery (IOD) of data frames guarantees frame delivery to a destination in the same order that they
were sent by the originator.
Some Fibre Channel protocols or applications cannot handle out-of-order frame delivery. In these cases,
switches in the Cisco Nexus 5000 Series preserve frame ordering in the frame flow. The source ID (SID),
destination ID (DID), and optionally the originator exchange ID (OX ID) identify the flow of the frame.
On a switch with IOD enabled, all frames received by a specific ingress port and destined to a certain egress
port are always delivered in the same order in which they were received.
Use IOD only if your environment cannot support out-of-order frame delivery.
If you enable the in-order delivery feature, the graceful shutdown feature is not implemented.
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 29: Route Change Delivery
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
154
Configuring Fibre Channel Routing Services and Protocols
Purpose
If the remote destination option is not specified, the default is direct.
Adds a static route to the RIB. If this is an active route and the FIBFIB
= Forwarding Information Base records are free, it is also added to
the FIB.
If the cost (metric) of the route is not specified, the default is 10.
Configures the netmask for the specified route the in interface (or
SAN port channel). You can specify one of three routes: 0xff0000
matches only the domain, 0xffff00 matches the domain and the area,
0xffffff matches the domain, area, and port.
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