CANOGA PERKINS L357 Gigabit Ethernet Service Unit - Manual (Page 52)

EdgeAccess Universal Chassis System
L357 Gigabit Ethernet Service Unit 5-4
5.2.2 New Installation
On new installations, make sure that all steps in Chapter 2 are complete:
1. Check that the STA LED is green.
2. Check that the fiber type (multimode or single mode) matches the L357 optical mode.
3. Make these checks:
• All fiber cabling is of the same type; do not mix multimode and single mode cables.
• The fiber optic cable is within the specifications and loss budget of the optic interface
module.
• The line length between the L357 and the remote link does not exceed the allowable loss
budget or receiver saturation limit.
• All host modules in the link are turned on.
• All fiber cables are connected Tx to Rx and Rx to Tx.
5.2.3 Switch 1 and 2 Settings Ignored
If the L357 was installed in a UCS 1000, UCS 1002 or 1020 enclosure and set in the User Interface to
software control, it ignores the hardware switch settings. To restore it to hardware control, access the
Utilities screen and reset the configuration to default. For details on setting the L357 hardware
switches, see Chapter 2.
5.2.4 Problems With Fiber Optics
If the System Alarms screen shows that an Extension Port link is down, inspect and clean the cables
and connectors, then replace any damaged fiber. Retest modules after cleaning.