What should I be aware of when using the Dynamic Host Configuration Protocol (DHCP) to provide IP address configuration and service provisioning?
You should be aware of the following items:
- Ring Aggregation Connection - The remote terminal (RT) and central office terminal (COT) must support the same ring resiliency protocol. For more information, click Ethernet MSAN Aggregation Options.
- Configuring Dynamic Profile for DHCP - You can create a basic dynamic profile that contains both access configuration and some level of basic service. For more information, click Defining Various Levels of Services for DHCP Subscribers.
- Enabling DHCP Snooping - By default, DHCP snooping is disabled globally. You can enable DHCPv6 snooping support globally by using the allow-snooped-clients statement at the [edit forwarding-options dhcp-relay dhcpv6 overrides] hierarchy level. For more information, click DHCP Relay and Snooping
- Preventing DHCP Spoofing - You can explicitly enable and disable interface support for DHCP snooped clients. For more information, click Enabling and Disabling DHCP Snooped Packets Support for DHCP Relay Agent.
- DHCP Log File Size - The maximum file size for DHCP local server and DHCP relay log files is 1 GB. The maximum number of log files for DHCP local server and DHCP relay is 1000. For more information, click Collecting Subscriber Access Logs Before Contacting Juniper Networks Technical Support.
- Enabling Option 82 Information - You must always enable the trust-option-82 statement so the router can process incoming DHCP client packets that contain option 82 information when the packets have a gateway IP address (giaddr) of 0 (zero). For more information, click Configuring the Router to Distinguish Between DHCP Duplicate Clients Based on Option 82 Information.
For more information, click Broadband Subscriber Access Protocols Feature Guide.