IBM Power Systems 775 Manual page 81

ISNM Distributed Architecture
FSP FSP
LNMC LNMC
1 1
Routing information
FSP FSP
LNMC LNMC
Performance Counters
Read
FSP FSP
LNMC LNMC
N N
Figure 1-52 ISNM distributed architecture
A high-level representation of ISNMs distributed architecture is shown in Figure 1-52. An
instance of Local Network Manager (LNMC) software runs on each FSP. Each LNMC
generates routes for the eight hubs in the local drawer specific to the supernode, drawer, and
hub.
A Central Network Manager (CNM) runs on the EMS and communicates with the LNMCs.
Link status and reachability information flows between the LNMC instances and CNM.
Network events flow from LNMC to CNM, and then to Toolkit for Event Analysis and Logging
(TEAL).
Local Network Management Controller
The LNMC present on each node features the following primary functions:
Event management:
– Aggregates local hardware events, local routing events, and remote routing events.
Route management:
– Generates routes that are based on configuration data and the current state of links in
the network.
Hardware access:
– Downloads routes.
– Allows the hardware to be examined and manipulated.
Figure 1-53 on page 68 shows a logical representation of these functions.
Routing information
Hardware events
Performance Counters
Read
Hardware events
Routing information
Hardware events
Performance Counters
Read
Chapter 1. Understanding the IBM Power Systems 775 Cluster
ISNM
Command
Module
Link Status
HW Events HW Events
Link Status
CNM
EMS
TEAL
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