
Customizing PPP
117360-A Rev. A 3-13
Configuring Data Encryption
Bay Networks offers software-based data encryption services for PPP dedicated
links for the BN
®
, AN
®
, ARN™, ASN™, System 5000 router modules, and all
serial interfaces. This includes encryption on multiline and multilink circuits. If
you configure data encryption on a PPP circuit, the encryption parameter fields
(Mode Protection Key, Encrypt Enable, LTSS Name, and LTSS Value) on the PPP
Interface Lists window are filled in. Otherwise, these fields are inactive. While
you can change these parameters through the PPP Interface Lists window, they are
only part of a suite of encryption parameters, and any changes you make can have
significant effects on the entire encryption process. Therefore, before changing
any of these encryption parameters, please see Configuring Data Encryption
Services for a full description of all the available data encryption parameters.
Disabling Network Control Protocols
To stop traffic from routing over a PPP interface, either
• Disable the NCP for the upper-level routing protocol.
For example, if you disable the NCP for IP (by setting the IP Enable
parameter to Disable), even though IP is still enabled on the interface, it is no
longer able to route traffic over the interface.
• Disable the upper-level routing protocol itself.
If you disable the routing protocol running on top of the PPP interface, you
also automatically disable the NCP for the routing protocol. For example,
disabling IP on an interface disables the NCP for IP as well.
3. Set Multilink Fragmentation.
(See page A-12.)
4. Set Fragmentation Trigger Size.
(See page A-13.)
5. If you have no other Interface parameters
to configure, click on OK. Otherwise,
continue with the Interface configuration.
The Configuration Manager window
appears.
Site Manager Procedure
(continued)
You do this System responds
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