Configuring a dialer interface
Before establishing a PPPoE session, you must first create a dialer interface and configure bundle DDR on the interface. Each PPPoE session uniquely corresponds to a dialer bundle, and each dialer bundle uniquely corresponds to a dialer interface. A PPPoE session uniquely corresponds to a dialer interface.
For more information about configuring dialer interfaces, bundle DDR, and dialer bundles, see "Configuring DDR."
Configuring a dialer interface for a PPPoE client
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Create a dialer access group and configure a dial access control rule. | dialer-group dialer-group rule { protocol-name { deny | permit } | acl { acl-number | name acl-number } | By default, no dialer group exists. |
3. Create a dialer interface and enter its view. | interface dialer number | N/A |
4. Assign an IP address to the interface. | ip address { address mask | ppp-negotiate } | By default, no IP address is configured. |
5. Enable bundle DDR on the interface. | dialer bundle enable | By default, no DDR is enabled. |
6. Associate the interface with the dial access control rule by associating the interface with the corresponding dialer access group. | dialer-group group-number | By default, a dialer interface is not assigned to any dialer group. |
7. Configure the link-idle timeout timer. | dialer timer idle idle [ in | in-out ] | The default setting is 120 seconds. When this timer is set to 0 seconds, the PPPoE session operates in permanent mode. Otherwise, the PPPoE session operates in on-demand mode. |
8. Configure the DDR application to operate in diagnostic mode. | dialer diagnose [ interval interval ] | By default, the DDR application operates in non-diagnostic mode. When DDR operates in diagnostic mode, the link-idle timeout timer is ignored. |
9. Set the auto-dial interval. | dialer timer autodial autodial-interval | The default setting is 300 seconds. In permanent or diagnostic mode, DDR starts the auto-dial timer after the link is disconnected and originates a new call when the auto-dial timer expires. As a best practice, set a shorter auto-dial interval for DDR to soon originate a new call. |
10. Set the MTU for the dialer interface | mtu size | By default, the MTU on a dialer interface is 1500 bytes. The dialer interface fragments a packet that exceeds the configured MTU, and adds a 2-byte PPP header and a 6-byte PPPoE header to each fragment. You should modify the MTU of a dialer interface to make sure the total length of any fragment packet is less than the MTU of the physical interface. |