User guide

572
pmp-0229 (Mar 2013)
Procedures for Troubleshooting Troubleshooting
1. check the Canopy knowledge base (http://www.cambiumnetworks.com/forum/) to
find whether other network operators have encountered a similar problem.
2. proceed to any appropriate set of diagnostic steps. These are organized as
follows:
◦ Module Has Lost or Does Not Establish Connectivity
◦ NAT/DHCP-configured SM Has Lost or Does Not Establish Connectivity on
Page 573
◦ SM Does Not Register to an AP on Page 574
◦ BHS Does Not Register to the BHM on Page 575
◦ Module Has Lost or Does Not Gain Sync on Page 576
◦ Module Does Not Establish Ethernet Connectivity on Page 576
◦ Module Does Not Power Up on Page 577
◦ Power Supply Does Not Produce Power on Page 578
◦ CMM Does Not Pass Proper GPS Sync to Connected Modules on
Page 578
Procedures for Troubleshooting
Module Has Lost or Does Not Establish Connectivity
To troubleshoot a loss of connectivity, perform the following steps.
Procedure 43: Troubleshooting loss of connectivity
1. Isolate the end user/SM from peripheral equipment and variables such as
routers, switches, and firewalls.
2. Set up the minimal amount of equipment.
3. On each end of the link
a. check the cables and connections.
b. verify that the cable/connection scheme—straight-through or crossover—is
correct.
c. verify that the LED labeled LNK is green.
d. access the General Status tab in the Home page of the module.
e. verify that the SM is registered.
f. verify that RSSI is 700 or higher.
g. verify that jitter is reported as 9 or lower.
h. access the IP tab in the Configuration page of the module.
i. verify that IP addresses match and are in the same subnet.
4. On the SM end of the link
a. verify that the PC that is connected to the SM is correctly configured to obtain
an IP address through DHCP.
b. execute ipconfig.