Troubleshooting Site Link Faults
Chapter 13: MTS Troubleshooting
•
The RAIM (Receiver Automatic Integrity Monitor) facility should be enabled to allow detection
and correction of GPS errors. Refer to the
Tetra EBTS Service Software (TESS) User Guide
.
•
If no other fault replaces the Site Controller.
Troubleshooting Site Link Faults
Initial Verification
The suggested utility used to verify the IP pathway to the two Core Routers is the
ping
MMI command.
Pings should be attempted to both Core Routers using both the default ping packet size of 32 bytes as
well as using a packet size larger than the con
fi
gured Frame relay fragmentation size. If router can
be successfully pinged using the default size of 32, but pings using the large size are unsuccessful,
this indicates an error in the con
fi
guration for Frame relay fragmentation.
ping 145.13.8.153
PING 145.13.8.153:
32 byte packets
–––––145.13.8.153 PING Statistics-----
4 packets transmitted, 0 packets received, 100% packet loss
SC: PING 145.13.8.153:
32 byte packets
PING 145.13.8.153:
32 byte packets
32 bytes from 145.13.8.153:
icmp_seq=0.
time=21.216 ms
32 bytes from 145.13.8.153:
icmp_seq=1.
time=20.770 ms
32 bytes from 145.13.8.153:
icmp_seq=2.
time=20.882 ms
32 bytes from 145.13.8.153:
icmp_seq=3.
time=20.747 ms
–––––145.13.8.153 PING Statistics-----
4 packets transmitted, 4 packets received, 100% packet loss
round-trip (ms) min/avg/max = 20.747/20.904/21.216
SC: PING –l 128 145.13.8.153
PING 145.13.8.153:
128 byte packets
128 bytes from 145.13.8.153:
icmp_seq=0.
time=51.340 ms
128 bytes from 145.13.8.153:
icmp_seq=1.
time=50.441 ms
128 bytes from 145.13.8.153:
icmp_seq=2.
time=51.291 ms
128 bytes from 145.13.8.153:
icmp_seq=3.
time=51.004 ms
–––––145.13.8.153 PING Statistics-----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (ms) min/avg/max = 50.441/51.019/51.340
Frame Relay Fragmentation
The
status frf
command displays fragmentation statistics as show below:
SC) status frf
Transmit Frames fragmented
126
Number of fragments transmitted
12
Number of received frames
4
Number of received fragments
8
Number of ignored fragments
0
Number of discards when disabled
0
13-14
6802800U74-N September 2009
Summary of Contents for DIMETRA MTS 2
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