Specifications

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2.10.1 M20 Specifications........................................................................................................................................59
2.10.2 M40 Specifications........................................................................................................................................61
2.10.3 M160 Specifications......................................................................................................................................63
2.10.4 Summary of Power Supply Specifications ..............................................................................................65
2.10.5 Summary of Interface and Port Densities ................................................................................................65
2.10.6 Summary of Interfaces Types and Supported M-xxx Router...............................................................66
2.10.7 Index of Interface Specification Datasheets ............................................................................................67
2.10.8 Flexible PIC Concentrator Cards for Juniper Networks Routers.........................................................68
2.10.9 POS Interfaces Specifications....................................................................................................................71
2.10.10 ATM Interfaces Specifications..............................................................................................................74
2.10.11 DS-3 Physical Interface Cards for M-xxx Routers ............................................................................78
2.10.12 E3 Physical Interface Cards for M-xxx Routers.................................................................................78
2.10.13 Channelized OC-12 to DS-3 Physical Interface Card .......................................................................79
2.10.14 Channelized DS-3 Physical Interface Card for M-series Routers ...................................................79
2.10.15 T1 Physical Interface Card for M-series Routers ...............................................................................80
2.10.16 E1 Physical Interface Card for M-series Routers ...............................................................................80
2.10.17 Fast Ethernet Physical Interface Card for M-series Routers ............................................................81
2.10.18 Gigabit Ethernet Physical Interface Cards for M -series Routers.....................................................81
2.10.19 Tunnel Services Physical Interface Card .............................................................................................83
2.10.20 Frame Relay Specifications....................................................................................................................84
3. JUNOS SOFTWARE SPECIFICATIONS..................................................................................................................85
3.1 JUNOS SOFTWARE ARCHITECTURE...................................................................................................................85
3.1.1 JUNOS Architecture ....................................................................................................................................85
3.1.2 JUNOS Routing Architecture ....................................................................................................................87
3.1.3 Junos Routing Protocols..............................................................................................................................90
3.2 IP ROUTING.........................................................................................................................................................91
3.2.1 Static Routing.................................................................................................................................................92
3.2.2 OSPF...............................................................................................................................................................92
3.2.3 IS-IS ................................................................................................................................................................92
3.2.4 BGP-4 .............................................................................................................................................................93
3.2.5 Routing Policies.............................................................................................................................................96
3.2.6 IP Multicast Support....................................................................................................................................100
3.2.7 CIDR .............................................................................................................................................................101
3.2.8 Broadcast......................................................................................................................................................101
3.2.9 IP Tunneling.................................................................................................................................................102
3.2.10 Load sharing on parallel links.....................................................................................................................102
3.2.11 Equal Cost Load Balancing with The Internet Processor II.....................................................................103
3.3 MPLS FOR TRAFFIC ENGINEERING...........................................................................................................104
3.3.1 LDP ...............................................................................................................................................................105
3.3.2 Tunneling LDP LSPs in RSVP LSPs.........................................................................................................106
3.4 VIRTUAL PRIVATE NETWORKS...................................................................................................................107
3.4.1 Layer 2 Virtual Private Networks ...........................................................................................................107
3.4.2 Layer 3 IP VPN Strategy ..........................................................................................................................108
3.5 SECURITY............................................................................................................................................................111
3.5.1 Firewall Filters .............................................................................................................................................111
3.5.2 Hardware-based Packet Filtering...............................................................................................................111
3.5.3 Routing Engine Firewall .............................................................................................................................112
3.5.4 Protocol Authentication...............................................................................................................................113
3.5.5 User Authentication.....................................................................................................................................113
3.5.6 Audit trails of login attempts and command history.................................................................................114
3.6 JUNOS SOFTWARE SPECIFICATIONS........................................................................................................116
4. AVAILABILITY...............................................................................................................................................................119
4.1 REDUNDANCY CONCERNS............................................................................................................................119
4.1.1 Causes of Failure .........................................................................................................................................119
4.1.2 The Fundamental Premise...........................................................................................................................120
4.1.3 The Juniper Approach .................................................................................................................................120
4.1.4 Operator Errors ............................................................................................................................................120