I have two sets of CPEs, one will talk to the default cable helper-address. The other CPE's I want to talk to another helper-address.
I have seen commands like
cable dhcp-parse option-60
cable helper-address 1.1.1.1 stb
But that doesn't make sense as i don't know how the Cisco CMTS decides what is a STB and what isn't
This is the CASA equivalent of what I want to do with the Cisco CMTS.
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The CPE device with the DHCP option 60 string of stbUser1 will get its IP address from the
DHCP server at IP 192.168.3.16. Similarly, the CPE device with DHCP option 60 string of
pcUser1 will get its IP address from the DHCP server at 192.168.3.17.
CASA(config)#cpe-class setTopBoxes
CASA(conf-cpe-class stb)#dhcp option 60 stbUser1
CASA(config)#cpe-class computers
CASA(conf-cpe-class stb1)#dhcp option 60 pcUser1
CASA(conf-cpe-class stb1)#end
CASA(config)#interface ip-bundle 1
CASA(ip-bundle 1)# ip address 10.231.1.1 255.255.255.0
CASA(ip-bundle 1)# ip address 10.231.13.1 255.255.255.0 setTopBoxes
CASA(ip-bundle 1)# ip address 10.231.20.1 255.255.255.0 computers
CASA(ip-bundle 1)# cable helper-address 192.168.3.16 setTopBoxes
CASA(ip-bundle 1)# cable helper-address 192.168.3.17 computers
CASA(ip-bundle 1)# cable helper-address 192.168.3.6
If a received DHCP option 60 string does not match the CMTS configuration, the CPE client
request will be forwarded to the default DHCP server (at 192.168.3.6 in the above example.)