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PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
Chapter 3 System Features
User Interfaces
away from the PNNI link with the high administrative weight, sending it to
the preferred connection with lower administrative weight. The freed-up
interface can then be reconfigured.
ATM Maintenance Mode is a way of rerouting SPVCs and SVCs from an ATM
port running PNNI. When a PNNI interface’s administrative weight is
changed, traffic on existing connections (PVC, SVC, SPVC) will not be dis-
turbed. New SVCs and SPVCs are routed away from a PNNI link that has
high administrative weight.
ATM Maintenance Mode supports the following:
•
PNNI interface on all ATM ports.
•
PNNI administrative weights are configured at the PNNI interface level.
The administrative weight can be changed without taking the interface
down or disturbing existing traffic on that ATM port.
•
The new administrative weight will be communicated to the ATM switch
on the other end of the PNNI link via PNNI link messages.
•
Both SVCs and SPVCs from far end and near end ATM switch [n1]are
routed away from the PNNI link with high administrative weight.
•
This procedure interoperates with Marconi/Fore and GX 550 ATM
switches.
Integrated Link Management Interface (ILMI)
The integrated link management interface (ILMI) is a network management
function that supports bidirectional exchange of ATM interface parameters
between two connected ATM Interface Management Entities (IMEs). These
entities are an end user and a public or private network, or a public network
and a private network.
Based on an ATM Forum-defined interim specification, ILMI uses a limited
subset of Simple Network Management Protocol (SNMP) capabilities. ILMI
provides status information and statistics using SNMP and a MIB to provide
any ATM device with status and configuration information about the follow-
ing information available at its ATM interfaces:
•
Virtual path connections (VPCs)
•
Virtual channel connections (VCCs)
•
Registered ATM network prefixes
•
Registered ATM addresses
•
Registered services and capabilities