Procedure
Step 1
Create two scope selection tags such as: isp1-cm-tag and isp2-cm-tag
Step 2
Configure three scopes; for example, mgmt-scope, isp1-cm-scope, and isp2-cm-scope such that isp1-cm-scope
and isp2-cm-scope each define mgmt-scope to be the primary scope
Step 3
Also configure two scopes for PCs for each of the ISPs; isp1-pc-scope and isp2-pc-scope. For scope
isp1-cm-scope, configure isp1-cm-tag to be the scope selection tag. For scope isp2-cm-scope, configure
isp2-cm-tag to be the scope selection tag
Step 4
Configure two client classes; for example, isp1-client-class and isp2-client-class
Step 5
Create client entries with their MAC addresses for CMs that belong to ISP1 and assign them to isp1-client-class.
Also assign the scope selection tag isp1-cm-tag
Step 6
Create client entries for CMs that belong to ISP2 and assign them to isp2-client-class. Also assign the scope
selection tag isp2-cm-tag
Step 7
Enable client class processing from the scope-selection-tag window
Overlapping address ranges cannot be configured on these subinterfaces because software gleans the DHCP
reply to figure out the subinterface it really belongs to. Although CNR can be configured with overlapping
address range scopes, it cannot be used to allocate addresses from these scopes.
Additional References
The following sections provide references related to Cisco Network Registrar for use with the Cisco CMTS
routers.
Technical Assistance
LinkDescription
http://www.cisco.com/cisco/web/support/index.html
Technical Assistance Center (TAC) home page,
containing 30,000 pages of searchable technical
content, including links to products, technologies,
solutions, technical tips, and tools. Registered
Cisco.com users can log in from this page to access
even more content.
Cisco cBR Series Converged Broadband Routers Application—Voice and Video Configuration Guide
51
Cisco Network Registrar for the Cisco CMTS Routers
Additional References
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