Cisco Cisco Packet Data Interworking Function (PDIF)
System Settings
▀ Configuring MIO/UMIO Port Redundancy
▄ ASR 5500 System Administration Guide, StarOS Release 18
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Figure 7.
Port Redundancy Failover in External Network Device Failure Scenario
In the example above, a switch failure causes a link down state on all ports connected to that switch. This failure causes
all redundant ports on the line card in slot 6 to move into the active state and utilize the redundant switch.
all redundant ports on the line card in slot 6 to move into the active state and utilize the redundant switch.
Configuring MIO/UMIO Port Redundancy Auto-Recovery
You can configure a port auto-recovery feature. When a port failure occurs and the preferred port is returned to service
(link is up), control is automatically returned to that port. By default, ports are in a non-revertive state, meaning that no
ports are preferred; a manual port switch is required to return use to the original port.
(link is up), control is automatically returned to that port. By default, ports are in a non-revertive state, meaning that no
ports are preferred; a manual port switch is required to return use to the original port.
Important:
This feature is applied on a per port basis (via the preferred slot keyword), allowing you to
configure specific ports to be used on individual MIO cards. For example, you could configure ports 10 through 19 as
preferred on the MIO/UMIO in slot 5, and configure ports 20 through 29 as the preferred ports on the MIO/UMIO in
slot 6.
preferred on the MIO/UMIO in slot 5, and configure ports 20 through 29 as the preferred ports on the MIO/UMIO in
slot 6.
Use the following example to configure a preferred port for revertive, automatic return to service when a problem has
cleared:
cleared:
configure
port ethernet slot#/port#
preferred slot slot#
end
Notes
If you do specify a preference, redundancy is revertive to the specified card. If you do not specify a preference,
redundancy is non-revertive.
Repeat for each additional port that you want to make preferred.
Save the configuration as described in the Verifying and Saving Your Configuration chapter.