User's Manual

9.5 Configure Cable IP Address
13. Enter the Interface Configuration mode for the cable interface by entering ‘interface
cable’ command in Global Configuration mode.
• RDN (config)# interface cable 0/0
• RDN (config-if)#
14. Enter the cable IP address and subnet mask by using the ‘ip-address’ command.
• RDN(config-if) # ip address 192.168.2.1 255.255.255.0 (ARCWAVE preconfigured
standard).
15. Activate the cable interface using the following command
• RDN(config-if) # no shutdown
9.6 Configure the CMTS
16. The ‘cable helper-address’ function is used to disassemble a cable modem’s DHCP
broadcast packet, and reassemble the DHCP broadcast packet into a unicast packet so
that the packet can traverse through the router and communicate with the DHCP server.
• RDN(config-if) # cable helper-address 10.10.10.201 cable-modem, (10.10.10.201
is the IP address of the destination DHCP server)
• RDN(config-if) # cable helper-address 10.10.10.201 host (This forwards DHCP
requests from computers behind the modem)
• RDN(config-if) # ip dhcp relay information option
• RDN(config-if) # ip helper-address ‘gateway ip’ (This forwards all other packets to
the gateway)
Note: 10.10.10.201 is the Arcwave standard IP address of the server that contains
the DHCP, TOD, and TFTP servers.
9.7 Configure Downstream Port
The BSR1000W purchased from Arcwave, is a wireless enhanced DOCSIS CMTS. As
a result, ignore the setup procedures presented in the Quick Start Guide. Please follow
the following instructions:
17. In Global Configuration mode, enter the cable interface using the following command:
RDN(config) #interface cable 0/0
18. Set the fixed downstream center frequency using the following command:
• RDN(config-if) #cable downstream 0 frequency xxxxxxxxx (where xxxxxxxxx
represents the frequency in hertz).
19. Set the Wireless Downstream Modulation to QPSK or 16QAM using the following
command:
• RND(config-if)# cable wireless downstream modulation qpsk for QPSK
• RND(config-if)# cable wireless downstream modulation 16qam for 16QAM
20. Set the downstream RF output level with the following command
• RND(config-if)# cable downstream 0 power-level # (# ranges from 450-630).
June 2003 Page 9-3