Cisco BPX 8650, Installation And Configuration Manual

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Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 19 Configuring Circuit Lines and Ports
Local Management Interface and Integrated Local Management Interface
Virtual Port Examples
This section describes two of many possible examples of virtual port configurations.
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Type I Virtual Ports can have PVP or PVC connections terminating on it.
All traffic through this Virtual Port is constrained to the Virtual Port’s configured bandwidth (Virtual
Port shaping). Moreover, if connection shaping is enabled (per QOS), each connection is constrained
to a PCR and given a fair chance to transmit by using WFQ (Weighted Fair Queuing).
•
Type II Virtual Ports have PVC connections all with the same VPI terminating on it.
As with the type I Virtual Port above, all traffic through this port is constrained to the Virtual Port’s
configured bandwidth. If connection shaping is enabled, each connection is constrained to a PCR
and under goes WFQ.
The BPX switch software does not distinguish between the two types of virtual ports.
Depending on the interface type, UNI or NNI, the maximum number of PVPs are 255 or 4095
respectively. The maximum number of VCIs is 65535.
Local Management Interface and Integrated Local
Management Interface
Local Management Interface (LMI) is a protocol that monitors the status of permanent virtual connections
between two communication devices.
Integrated Local Management Interface (ILMI) provides a means for configuration, status and control
information between two ATM entities.
LMI functions are supported on ports and feeder trunks. ILMI functions are supported on ports, virtual
ports, and virtual trunks.
The ILMI parameters are described in Table 19-2.
.
Table 19-2 ILMI Parameters
Parameter Description
VPI.VCI VPI.VCI for ILMI signaling channel equal 0.16 as default
Polling Enabled Keep-alive polling
Trap Enabled VCC change of state traps
Polling Interval Time between GetRequest polls
Error Threshold Number of failed entries before ILMI link failure is declared.
Event Threshold Number of successful polls before ILMI link failure is cancelled.
Advertise Intf Info Indicates whether the BPX should communicate the interface information
to the ILMI peer.