
Configuring Multiline Services
7-5
Random Selection
If you choose Random selection, the router determines the data path for outbound
traffic by using random number generation. With this method, the router
1. Assigns a set of numbers to each data path.
2. Generates a random number for each outbound packet.
3. Sends the packet via the data path with the matching number.
Frame Relay Considerations
You can configure multiline services for both group access mode and direct access
mode Frame Relay PVCs. For more information on using multiline services with
Frame Relay, refer to Configuring Frame Relay Services.
PPP Multilink
The Bay Networks implementation of PPP includes a multilink feature. Multilink
is similar to multiline; multilink, however, provides the ability to
• Group lines of different speeds
• Preserves packet sequencing
• Distribute traffic more evenly among the data paths
• Monitor traffic volume
Multilink is particularly beneficial when you configure circuits to access
bandwidth-on-demand (BOD). For more information on the PPP multilink
feature, refer to Configuring PPP Services.
Note: Random selection provides even distribution across all active data
paths in the topology; however, packets traveling on different paths can arrive
at their destination out of sequence. Some protocols cannot tolerate packets
arriving out of sequence, and as a result, you can experience poor
performance or failures. Be sure that random selection is appropriate for your
application.
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