Avocent Cyclades-PR4000 installation manual Router a

Cyclades-PR4000

Multilink PPP (MLPPP) is similar in functionality to the Multichassis feature. The primary difference is that all physical links reside in the same RAS/Router. It is similar to the CyROS Multilink capability described in section

4.4of the CyROS Refrence Guide, but it is implemented at the data-link level instead of the network-protocol level. When compared to Multilink, MLPPP is slightly more efficient and less generic (because it applies only to PPP encapsulation).

Router A

	Modem
Modem		Modem
Modem		Link 2 (Bundle 6)
	Link 1
(Bundle 6)		Router B

FIGURE 8.8 MULTILINK PPP EXAMPLE

In Figure 8.8, Router B connects to Router A via two modem connections to achieve a larger bandwidth. Router A accepts the two physical connections, but treats them as one logical connection (one “bundle”). MLPPP must be enabled on all interfaces that will form this bundle, (and on both sides of the connection), with the same bundle identifier specified for each.

Chapter 8 - The E1 and T1 Interfaces, With Signaling 67