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Layer 3 Switching Software Feature and Configuration Guide
78-6235-04, Cisco IOS Release 12.0(10)W5(18)
Chapter4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst8540)
Configuring SONET Alarms
The ATM OC-12c and the ATM OC-3c uplink interfaces support SONET alarm monitoring. To
configure alarm monitoring, perform the following steps, beginning in global configuration mode:
Todetermine which alarms are reported on the ATM interface, and to display the BER thresholds, use
the show controllersatm command, as described in the “Verifying the ATMConfiguration” section on
page 4-36. For a detailed description of the sonet report and sonet threshold commands, refer to the
ATM Switch Router Command Reference publication.
Configuring Loopback
The ATM uplink interface is configured by default with no loopback. To enable loopback, use the
loopback command in interface configuration mode.
Command Purpose
Step1 Router(config)# interface atm
slot/subslot/interface
Router(config-if)#
Enters interface configuration mode and specifies the ATM
interface to configure.
Step2 Router(config-if)# sonet report
{b1-tca | b2-tca | b3-tca | lais |
lrdi | pais | plm-p | plop | prdi |
rdool |sd-ber |sf-ber |slof |slos|
tim-p | uneq-p}
Permits console logging of selected SONET alarms.
The alarms are as follows:
•b1-tca (B1 bit error rate [BER] threshold crossing alarm)
•b2-tca (B2 BER threshold crossing alarm)
•b3-tca (B3 BER threshold crossing alarm)
•lais (line alarm indication signal)
•lrdi (line remote defect indication)
•pais (path alarm indication signal)
•plm-p (payload label, C2 mismatch alarm)
•plop (path loss of pointer), prdi (path remote defect
indication)
•rdool (receive data out of lock)
•sd-ber (LBIP BER in excess of threshold)
•sf-ber (signal failure BER)
•slof (section loss of frame)
•slos (section loss of signal)
•tim-p (path trace identifier, J1 mismatch alarm)
•uneq-p (path unequipped C2 alarm).
Theb1-tca,b2-tca,b3-tca,plop,sf-ber,slof,slos are enabled by
default.
Step3 Router(config-if)# sonet
threshold {b1-tca | b2-tca |
b3-tca | sd-ber | sf-ber}rate
Sets the BER threshold values of the specified alarms. Default
values are 6 for b1-tca, b2-tca,b3-tca, and sd-ber; 3 for sf-ber.