Specifications

2-33
Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 2 Cisco IGX 8400 Series Cards
Universal Switching Module
UXM-E Redundancy
Like other IGX service modules, the UXM-E can be configured for Y-cable redundancy. Both cards, the
primary and the redundant, must be installed before you configure them for Y-cable redundancy.
The UXM-E features hot standby, in which the redundant card receives card configuration information
as soon as you finish specifying redundancy. The standby card also updates its configuration as the
active card configuration changes.
For more information on setting up Y-cable redundancy, see the “Card Redundancy” section on
page 2-15.
UXM-E Configuration
When you insert a new UXM-E into the backplane, or apply power to the IGX node, the UXM-E
firmware reports the card type and the number of physical lines on the back card to the node’s switch
software.
Note On activation, the UXM-E reports the number and type of physical ports available on the attached back
card. This back card configuration information is retained by switch software even if the back card is
later removed.
To activate a trunk, use the switch software uptrk command (see Chapter 4, “Cisco IGX 8400 Series
Trunks”).
To activate a line, use the switch software upln command (see Chapter 5, “Cisco IGX 8400 Series
Lines”).
UXM-E Management
Most UXM-E management tasks are general trunk or line management tasks. See Chapter 4,
“Cisco IGX 8400 Series Trunks,” or Chapter 5, “Cisco IGX 8400 Series Lines” for more information on
managing and troubleshooting trunks or lines.
UXM-E as a Clock Source
A UXM-E line or trunk can serve as the clock source for the IGX node. To configure the clock source,
use the switch software cnfclksrc command. To display available clock sources, use the switch software
dspclksrcs command. To show the current clock source, use the switch software dspcurclk command.
For more information about clocking on IGX nodes, see “Cisco IGX 8400 Series Nodes”