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Chapter 1
Cajun P550/P880 Switch ATM Uplink User Guide, Version 1.1
RFC 1483
RFC 1483 defines an encapsulation method for transporting
multiple protocols over the same or different VCs using the ATM
Adaptation Layer 5 (AAL5) protocol. Implementation is limited to
Permanent Virtual Circuits (PVCs). The ATM Uplink module
supports 802.3 Ethernet, as well as a routed Protocol Data Unit
(PDU) for layer 3.
The ATM Uplink module supports up to 128 Virtual Switch Ports
(VSPs) and LECs per module. A VSP is a single port on the Cajun
P550/P880 switch. It appears as a switch port to the supervisor
module and is bound to a VLAN by the supervisor. Only one VSP
may be bound to a particular VLAN.
* Notes:
■
You need a license key in order to use RFC 1483. Refer to the
Cajun P550/P880 Switch ATM Uplink Installation Sheet for more
information on the license key.
■ You can configure a module with both LANE and RFC 1483,
if you have purchased a RFC 1483 license key
Quality of Service
QoS (Quality of Service) is a measure of guarantee performance for
the transmission quality and service availability of a transmission
system.
QoS is implemented in LANE through configuring sets of ATM
traffic parameters (QoS Sets) and associating these with the different
Ethernet frame priorities (0 - 7). A Data Direct Virtual Channel
Connection (DDVCC) is setup to a QoS capable LEC for each QoS set
as needed.