Network Management, MIBs and MPLS

Transcription

1 Network Management, MIBs and MPLS Principles, Design and Implementation Stephen B. Morris 6 Network Management Software Components

2 2 Network Management, MIBs and MPLS Telnet/ HTTP/ HTTPS/ IPSec Northbound Interface (to OSS) Client 1 Database SNMP Sets/Gets/ Responses (Synchronous) SNMP Notifications (Asynchronous) NMS Out-of-Band Channel Managed Network Figure 6 1 NMS components and data flows.

3 Network Management, MIBs and MPLS 3. Telnet to A Modem X Interface A Network Management System Terminal Server (with SNMP Agent) PSTN Modem Y 2 x T1 T3 T1 Digital Cross-Connect Figure 6 2 Terminal-server interface management.

4 4 Network Management, MIBs and MPLS Topology View Type Origin Severity Status Fault LER1 Critical Active Event LER2 Major Cleared Fault LSR1 Minor Active Fault LER1 Critical Active Figure 6 3 Client topology view with a fault listing.

5 Network Management, MIBs and MPLS 5 Fault Server Fault Server Secure User Clear/Delete/ Acknowledge Faults Fault Listings SNMPv1/2c/3 Stack Fault Update Fault Suppression Duplicate Suppression Fault Table Node Table OtherTables, e.g., LSP Table Client Managed Network Notifications Topology Update Root-Cause Analysis Database Legend Each block represents a software entity Figure 6 4 Fault Server components.

6 6 Network Management, MIBs and MPLS Table 6 1 LSP Configuration Data ORIGIN DESTINATION SIGNALING PROTOCOL REQUIRED QOS EXPLICIT ROUTE OBJECT LER1 LER2 LDP Best-effort None

7 Network Management, MIBs and MPLS 7 Configuration Server Configuration Server Generic Connection Table Update to Database Create Connection SNMPv1/2c/3 Stack Create Objects (e.g., Connections) in Network Topology Update Node Table Other Tables, e.g., LSP, Operation Results Tables Set/Get/GetBulk Trace Files Database Client Managed Network Figure 6 5 Secure User Configuration L d E hserver bl kcomponents. f i

8 8 Network Management, MIBs and MPLS Table 6 2 MPLS Tunnel Table Extract with a MIB Hole MPLS TUNNELINDEX MPLS TUNNELSIGNALLING PROTO MPLS TUNNELSETUPPRIO MPLS TUNNELHOLDINGPRIO

9 Network Management, MIBs and MPLS 9 Accounting Server Accounting Server Reports Mediation Call Data Records (CDR) Correlation Aggregation Billing Table LSP Table Database LSP X Manage d Network Legend Each block represents a software entity Figure 6 6 Accounting Server components.

10 10 Network Management, MIBs and MPLS Performance Server Performance Server Reports Mediation Topology Update SLA Alerts Performance Table Node Table Other Tables, e.g., LSP Table Managed Network Performance Data Records (PDR) Database Correlation Aggregation Legend Each block represents a software entity Figure 6 7 Performance Server components.

11 Network Management, MIBs and MPLS 11 Table 6 3 An IP SLA Source IP Address Source Port 444 Destination IP Address Destination Port 445 Link Bandwidth 10Mbps Interpacket Delay 1ms Ordered Delivery Yes Packet Loss % Jitter No Round Trip Delay 30ms

12 12 Network Management, MIBs and MPLS IP Router LSR IP Router MPLS LER LSR 2 IP Router Figure 6 8 The problem of configuring multiservice networks.