CBF Networks Inc. dba Fastback Networks 105 User Manual
IBR Installation Guide
Page 31 of 38
Doc # 770-00023.1
Jan. 23, 2015
Appendix A:
Troubleshooting
Guide
NOTE: These procedures have been developed by Fastback Networks to assist a field engineer in
troubleshooting an IBR that does not appear to be working properly. These procedures are not intended
to replace or supersede a company’s standard procedures for operating and troubleshooting network
devices.
troubleshooting an IBR that does not appear to be working properly. These procedures are not intended
to replace or supersede a company’s standard procedures for operating and troubleshooting network
devices.
This Troubleshooting Guide is organized by symptoms that an operator might observe that suggest that IBR is
not operating properly.
not operating properly.
A 1.
IBR Reboots During the Boot Process
If IBR is repeatedly rebooting during the boot process and displaying the following message:
Message: “Uncompressing Linux… done, booting the kernel”.
Try the following: Replace the PoE
+
injector and try booting the IBR again. It might be that the PoE
+
power
source is not providing sufficient power to IBR. IBR requires at least 35 watts.
A 2.
IBRs Cannot Establish A Link
Both IBRs on the link appear to be working properly, but cannot establish a link.
2.1.
Turn Transmitters ON
Turn both transmitters ON using the following procedure:
a. Check the status of the link with the following CLI command (where IBR101 is shown as the host
name):
IBR101 # show interface radio 0 status
b. The status report that is displayed should state that IBR is UP and the Transmitter is ON.
Status: UP, 0d 2h 44m 52s, Transmitter is ON
c. If the Transmitter is OFF, turn it on with the following CLI commands:
IBR101 # configure terminal
IBR101 (config)# interfaces radio 0
IBR101 (config-rad-0)# tx on
d. Verify that the transmitter is ON:
IBR101 (config-rad-0)# do show interface radio 0 status
e. If the transmitter still is not ON, reboot the IBR:
IBR101 (config-rad-0)# do reload
f. When the unit is back up repeat the sequence above to turn ON the transmitter. If the transmitter still
in not ON, escalate the problem to the next higher support level.
2.2.
Check IBR Compatibility
When both transmitters are confirmed to be ON, verify that their respective transmit and receive frequencies
mirrored; that is, that the receive frequency of each IBR is the same as the transmit frequency of the other
IBR. The following are sample radio status outputs:
IBR. The following are sample radio status outputs:
5.8 IBR Frequency and Bandwidth:
TX: 5800 MHz RX: 5300 MHz