Release 1.0 | CMTS Commands |
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ip address
The ip address command configures a primary or secondary IP address for an interface or defines the Gateway IP address (giaddr) for Customer Premises Equipment (CPE), Multimedia Telephone Adapter (MTA), or cable modem DHCP requests. The no ip address command is used to remove an IP address from the interface. When configuring the cable interface IP address two additional options are supported; the host and mta options.
The additional options are only available from cable interface configuration mode when selecting an IP address. During the DHCP process, the relay agent requests an IP address in a particular subnet by inserting the IP address of the interface into the DHCP requests from CMs, hosts, and MTAs. The primary address is always inserted in cable modem DHCP requests. If a secondary address or a secondary host address is defined, then the first secondary or secondary host IP address in the list is inserted into DHCP requests from hosts. If one or multiple secondary mta IP address are defined, then the first secondary mta IP address defined is inserted into DHCP requests from secondary MTA devices. The ip dhcp relay information option command must be enabled to allow the BSR to determine what type of device originated the DHCP request. By default, the primary address will be inserted into DHCP requests.
When an operator wants to support multiple ISP providers, the ip address command can be used to group secondary subnets together. Basically one secondary is defined for CMs and another secondary subnet is defined for CPEs. The CM subnet and the CPE subnet are bound through the use of the
Note: Supporting multiple ISPs on the BSR requires significant coordination between the operator provisioning system and the configuration of the BSR. Refer to Selecting a Specific ISP in the BSR 2000 Configuration and Management Guide.
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