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The Complete IS-IS Routing Protocol- P54

The Complete IS-IS Routing Protocol- P54: IS-IS has always been my favourite Interior Gateway Protocol. Its elegant simplicity, its well-structured data formats, its flexibility and easy extensibility are all appealing – IS-IS epitomizes link-state routing. Whether for this reason or others, IS-IS is the IGP of choice in some of the world’s largest networks. | Index 533 Weaknesses in ISIS 353 BGP and 274-276 481-482 Cisco 6 Common header 110 Configuration Basic 66-68 IOS 451 JUNOS 452 Configuration examples see Configuration examples Database 142-143 433 see also Link-state database Defined 1 DIS 113 188 see also DR And psuedonodes183 Election 173 199 ID JUNOS 201-202 Pre-emption 200 Priority 199-200 Redundancy 202 Distribution of prefixes 329-331 Encapsulation 802.3 81 SNAP 231-232 Extended fragmentation 518-520 Extensibility 5 289-291 Extensions 345 Flooding and TED 436 Full Internet routes 469 Future of 503 G-MPLS extensions 513-518 Graceful restart 388-389 IETF and 6 Interface 80 Intergration with IP 5 IOS commands for see Commands IOS IP addresses and 102-103 IPv6 370 JUNOS commands for see Commands JUNOS LDP and 421 Levels 8-level ISIS 513-518 Defined 85 L1 85-87 112 142 144 155 240 331 L1L2 85-87 112 115 156 159 240 331 339 L2 85-87 112 143-144 146 155 240 331 Recommendations 493-494 Liveliness 135-136 LSDB 141-142 433 see also Link-state database LSPs see LSPs MAC addresses and 80 Messages Common header 110 Hello 109-110 LAN hello 111 P2P hello 114 Metrics 14 193 267 294-295 301 Auto-bandwidth 320 Auto-calculation of 319-320 And traffic engineering 393 Interworking issues 327 Example 250-253 New-style 318 Old-style 301-302 304-205 327 Static 320-322 Wide 304 318 408 MTU size 82 230-232 Checking 116 Issues 230-232 Multi-topology 379 Neighbor liveliness detection 135-136 NETs 92-93 100 On NSFNet 3-4 Origin of 2-4 OSI-RM and 79-80 Overload bit 154 156-157 159 Application 159-160 Fragments and 244 Setting 161-163 Use recommended 499 Padding 116 234-235 Private addresses 103-104 Pseudonode 153 183 186-187 301 And SPF calculation 254-256 Representation 188 Suppression of P2P 196 System-ID selection 191-193 PSNP 208 218 236-238 And authorization 365 Purging LSPs 172-175 Expiration of 174 Route leaking ISIS 87-90 Level 1 to Level 2 337 Level 2 to Level 1 331-334 534 Index ISIS cont d Route resolution 247 273-276 Routing