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Configure Multilink PPP with Interleaving
Configure Multilink PPP with Interleaving
Note Interleaving applies only to interfaces that can configure a multilink bundle interface. These include virtual templates, dialer interfaces, and Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) or Primary Rate Interface (PRI) interfaces.
In general, Multilink PPP with interleaving is used in conjunction with weighted fair queuing and RSVP or IP Precedence to ensure voice packet delivery. Use Multilink PPP with interleaving and weighted fair queuing to define how data will be managed; use RSVP or IP Precedence to give priority to voice packets.
You should configure Multilink PPP if the following conditions exist in your network:
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Slow links
Note Multilink PPP should not be used on links greater than 2 Mbps.
Multilink PPP support for interleaving can be configured on virtual templates, dialer interfaces, and ISDN BRI or PRI interfaces. To configure interleaving, you need to complete the following tasks:
•Configure the dialer interface or virtual template, as defined in the relevant chapters of the Dial Solutions Configuration Guide.
•Configure Multilink PPP and interleaving on the interface or template.
To configure Multilink PPP and interleaving on a configured and operational interface or virtual interface template, use the following commands in interface mode:
Step | Command | Purpose |
1 | ppp multilink | Enable Multilink PPP. |
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2 | ppp multilink interleave | Enable |
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3 | ppp multilink | Optionally, configure a maximum fragment delay. |
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4 | ip rtp reserve | Reserve a special queue for |
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| to specified destination User Datagram Protocol |
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| (UDP) ports, allowing |
higher priority than other flows. This is only applicable if you have not configured RSVP.
Note The ip rtp reserve command can be used instead of configuring RSVP. If you configure RSVP, this command is not required.
Configuring Voice over IP for the Cisco 3600 Series