Troubleshooting guide

Troubleshooting the CMTS
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Too Many CPE Hosts on Subscriber CM
When too many Customer Premises Equipment (CPE) hosts, such as PCs, servers,
and appliances are connected to a single subscriber’s CM, that CM can use an
excessive amount of network resources compared to other CMs on the HFC
subnetwork.
Follow these steps to view the number of CPE hosts for a CM, and to limit that
number:
1. To view the number of hosts connected to the CM, the maximum number of
hosts allowed for the CM, and a list of all host CPE IP addresses behind the
CM, use the show cable modem command in Privileged EXEC mode, as
shown in the following example:
RDN#show cable modem {<MAC-address> | <ip-address>} hosts
where:
MAC-address is the MAC level address of the CM.
ip-address is the IP address of the CM.
2. If you determine that there are too many CPE hosts connected to the CM, use
the cable modem max-hosts command in Privileged EXEC Mode, as shown
in the following example, to specify the maximum number of hosts that can be
attached to a CM on this interface. The valid range is from 0 to 16 CPEs. The
default value is zero.
RDN#cable modem {<MAC-address> | <ip-address>} max-hosts <n>
where:
MAC-address is the MAC level address of the CM
ip-address is the IP level address of the CM
n is the maximum number of CPE hosts for the CM
3. To verify the maximum number of hosts setting, use the show cable modem
hosts command in Privileged EXEC mode.