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K-61
User Guide for Cisco Security Manager 3.2
OL-16066-01
Appendix K Router Platform User Interface Reference
PVC Policy Page
Encapsulation settings
Type Does not apply when the Management PVC (ILMI) check box is enabled.
The ATM adaptation layer (AAL) and encapsulation type to use on the PVC:
• [blank]—The encapsulation type is not defined. (When deployed,
aal5snap is applied.)
• aal2—For PVCs dedicated to AAL2 Voice over ATM. AAL2 is used for
variable bit rate (VBR) traffic, which can be either realtime (VBR-RT)
or non-realtime (VBR-NRT).
• aal5autoppp—Enables the router to distinguish between incoming PPP
over ATM (PPPoA) and PPP over Ethernet (PPPoE) sessions and create
virtual access for both PPP types based on demand.
• aal5ciscoppp—For the proprietary Cisco version of PPP over ATM.
• aal5mux—Enables you to dedicate the PVC to a single protocol, as
defined in the Protocol field.
• aal5nlpid—Enables ATM interfaces to work with High-Speed Serial
Interfaces (HSSI) that are using an ATM data service unit (ADSU) and
running ATM-Data Exchange Interface (DXI).
• aal5snap—Supports Inverse ARP and incorporates the Logical Link
Control/Subnetwork Access Protocol (LLC/SNAP) that precedes the
protocol datagram. This allows multiple protocols to traverse the same
PVC.
Table K-26 PVC Dialog Box—Settings Tab (Continued)