Specifications

Page 4 /148
4.1.5 Software Errors............................................................................................................................................120
4.1.6 Hardware Errors...........................................................................................................................................121
4.1.7 Network Level Reliability...........................................................................................................................122
4.2 HARDWARE REDUNDANCY..........................................................................................................................122
4.2.1 Redundancy of Central Control and Processing .......................................................................................122
4.2.2 Redundant Routine Engine .........................................................................................................................122
4.2.3 Redundant System and Switching Board ..................................................................................................124
4.2.4 Redundant power supplies ..........................................................................................................................125
4.2.5 Redundant chassis fans................................................................................................................................125
4.2.6 Hot swap and modularity ............................................................................................................................125
4.3 LOGICAL REDUNDANCY................................................................................................................................125
4.3.1 Software Redundancy..................................................................................................................................125
4.3.2 Automatic Protection Switching (APS).....................................................................................................126
4.3.3 Virtual Router Redundancy Protocol (VRRP) ..........................................................................................126
4.3.4 MPLS Traffic Engineering and Fast Reroute............................................................................................126
4.4 MEAN-TIME BETWEEN FAILURE DATA FOR JUNIPER NETWORKS’ COMPONENTS..................126
4.4.1 Mean-Time Between Failure Data for the M20 and M40...................................................................126
4.4.2 Mean-Time Between Failure Data for the M160..................................................................................127
5. MANAGEABILITY.........................................................................................................................................................132
5.1 CONFIGURATION AND MANAGEMENT.......................................................................................................132
5.1.1 Front Panel and Craft Interface..................................................................................................................132
5.1.2 JUNOS Command Line Interface..............................................................................................................132
5.1.3 Telnet access ................................................................................................................................................133
5.1.4 Documentation and On -line (Long Help) Documentation.......................................................................133
5.2 SOFTWARE DOWNLOAD................................................................................................................................133
5.3 SOFTWARE STARTUP AND EMERGENCY RECOVERY PROCEDURES .................................................133
5.4 SYSTEM UPGRADE............................................................................................................................................134
5.4.1 Routine maintenance procedures................................................................................................................134
5.5 FAULT MONITORING.......................................................................................................................................135
5.5.1 SNMP Traps.................................................................................................................................................135
5.5.2 Alarm Conditions.........................................................................................................................................135
5.5.3 Syslog...........................................................................................................................................................136
5.5.4 End-to-end loopback diagnostics ...............................................................................................................136
5.5.5 Environmental monitoring..........................................................................................................................137
5.6 STATISTICAL ANALYSIS................................................................................................................................138
5.6.1 Storage of Sampling Data ...........................................................................................................................138
5.6.2 Transfer of Sampling File/Interfacing with Analysis Tools ....................................................................138
5.6.3 Cflowd aggregation support in sampling ...............................................................................................138
5.6.4 On-line Sampling Analysis Tools ..............................................................................................................138
5.6.5 Sampling Application: Characterizing Traffic Flows...............................................................................138
6. INTEROPERABILITY..................................................................................................................................................140
7. PERFORMANCE.............................................................................................................................................................141