Users Manual Part 2

13.1.3.3.4
Site Link
Troubleshooting the Site Link essentially consists of checking the correct operation of each layer in the
order starting with the physical layer.
The physical layer may be configured to be either E1 or X.21. The status bsl command provides
different information for the two interface types.
13.1.3.3.4.1
Netcom Decoupling
Netcom Decoupling is a feature available for dual E1 links setup. When the Netcom Decoupling feature
is enabled, Netcom session mapping is reported by the "status sc" command. When both links are up,
Netcom mapping should be set to default, meaning primary Netcom is on PVC1 and secondary is on
PVC2. The routes to primary and secondary zone controllers (ZC) are default. The following example
shows dual E1 link with both PVCs up.
SC: status fr
PVC Primary Backup
DLCI for this PVC 16 17
IP address of this PVC 192.168.20.16 192.168.21.17
Current status ACTIVE ACTIVE
Times changed state 7 7
Time in current state (secs) 79757 79757
Total time up (secs) 80406 80407
Total time down (secs) 369796 369795
Number of frames transmitted 97355 41476
Number of frames received 99842 44213
Invalid NLPID frames received 0 0
Invalid UI frames received 0 0
SC: status sc
Overall Status: Active - UNKNOWN / NO_REASON
BTS type: MTS4
Site Status: No Trunking - Site Failsoft (SecurityClass3)
Internal State: AS_L_E_IDL
Site Link State: UP
Netcom Primary: ACTIVE_S (PVC1)
Netcom Secondary: STANDBY_S (PVC2)
Position ID: A
Internal Temp: 49.19 DegC (Alarm at: 70.0 DegC)
SC: route show
INET route table
Destination Gateway Flags Use
If Metric
0.0.0.0/0 192.168.25.1 USPs 4
bts 0
10.0.254.0/24 link#3 UC 0
eth1 0
10.0.254.1 link#1 UH 0
lo0 0
10.1.253.0/24 link#2 UC 3
eth0 0
10.1.253.1 link#1 UH 0
lo0 0
127.0.0.0/8 127.0.0.1 UR 0
lo0 0
127.0.0.1 127.0.0.1 UH 8
lo0 0
6802800U74-AP
Chapter 13: MTS Troubleshooting
387