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Chapter 20: CPE Device Classes

STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide

 If the user were to provision cpe, mta, ps, and stb against the same helper-address, the running-config would show the

output as host.

 If the user were to provision host and then performed the no version of the command against stb, then running config

would show a line for each instance of cpe, mta, and ps.

Helper Address Command Examples

Assuming that the DHCP helper addresses were to be configured as shown in the following examples:

configure interface cable-mac 20 cable helper-address 1.1.1.1

configure interface cable-mac 20 cable helper-address 2.2.2.2 host

configure interface cable-mac 20 cable helper-address 3.3.3.3 cable-modem

configure interface cable-mac 20 cable helper-address 3.3.3.3 cpe

configure interface cable-mac 20 cable helper-address 4.4.4.4 cpe

configure interface cable-mac 20 cable helper-address 4.4.4.4 mta

configure interface cable-mac 20 cable helper-address 4.4.4.4 stb

configure interface cable-mac 20 cable helper-address 5.5.5.5 mta

configure interface cable-mac 20 cable helper-address 6.6.6.6 ps

configure interface cable-mac 20 cable helper-address 7.7.7.7 stb

Then the following would be some of the effects of the configuration on the subscriber equipment:

 A CM performing registration on cable-mac 20 would have its DHCP Discover message forwarded to the following

addresses: 1.1.1.1 and 3.3.3.3

 A generic CPE performing DHCP discovery would have its Discover message forwarded to 1.1.1.1, 2.2.2.2, 3.3.3.3, and

4.4.4.4

 An eSAFE STB performing DHCP discovery would have its Discover message forwarded to 1.1.1.1, 2.2.2.2, 4.4.4.4, and

7.7.7.7

Assigning Secondary Interfaces Based on Device Class

In addition to being able to target specific DHCP servers based on device class type, it is also possible to indicate which

secondary interfaces the DHCP server is to respond to based on device class type.

Provisioning Secondary Addresses

The following command allows the user to provision the secondary addresses based on device class type:

configure interface cable <WORD> ip address <A.B.C.D> <A.B.C.D> secondary dhcp-giaddr [cpe] [mta]

[ps] [stb] [no]

Arris C4C User Manual

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