Juniper JUNOSE 11.0.X MULTICAST ROUTING, Configuration Manual

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DHCP local server
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DHCP external server
Session and Resource Control Software
The Session and Resource Control (SRC) software, formerly the Service Deployment
System (SDX) software is a component of Juniper Networks management products.
The SRC software provides a Web-based interface that allows subscribers to access
services, such as the Internet, an intranet, or an extranet.
When a DHCP subscriber logs in, the SRC software can authorize the address request
and select the DHCP address pool on the router from which the DHCP address is
selected. The SRC software can also control the number of IP addresses that are
given to a particular retailer or subscriber and control the lease time of IP addresses
assigned to DHCP subscribers.
The router retrieves the DSL line rate parameters from Access Node Control Protocol
(ANCP) and reports this information to the SRC software with the corresponding
COPS messages. If the router cannot retrieve the DSL line rate parameters from
ANCP, it retrieves the DSL information in the following ways:
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From AAA layer —For PPP interfaces, the router retrieves the DSL line rate
parameters from the AAA layer and reports this information to the SRC software.
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From DHCP options —For DHCP external server and DHCP local server in
equal-access mode, the router retrieves the DSL line rate parameters from DHCP
options and reports this information to the SRC software. To enable the DHCP
external server to receive the DHCP options if the router blocks the DHCP options
on the DHCP application, you must use the
set dhcp relay
preserve-trusted-client-option command.
Related Topics
set dhcp relay preserve-trusted-client-option
DHCP Platform Considerations
For information about modules that support DHCP on the ERX7xx models, ERX14xx
models, and the ERX310 Broadband Services Router:
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See ERX Module Guide, Table 1, ERX Module Combinations for detailed module
specifications.
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See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support DHCP.
For information about modules that support DHCP on the E120 and E320 Broadband
Services Routers:
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See E120 and E320 Module Guide, Table 1, Module and IOAs for detailed module
specifications.
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See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support DHCP.
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DHCP Platform Considerations
JUNOSe 11.0.x Broadband Access Configuration Guide