Users Guide

Table Of Contents
Neighbor fall-over.....................................................................................................................................................585
Configure password..................................................................................................................................................587
Fast external fallover............................................................................................................................................... 588
Passive peering..........................................................................................................................................................589
Local AS...................................................................................................................................................................... 590
AS number limit.......................................................................................................................................................... 591
Redistribute routes................................................................................................................................................... 592
Additional paths.........................................................................................................................................................592
MED attributes.......................................................................................................................................................... 593
Local preference attribute...................................................................................................................................... 593
Weight attribute........................................................................................................................................................ 594
Enable multipath........................................................................................................................................................595
Route-map filters......................................................................................................................................................595
Route reflector clusters.......................................................................................................................................... 596
Aggregate routes...................................................................................................................................................... 596
Confederations.......................................................................................................................................................... 597
Route dampening...................................................................................................................................................... 598
Timers.......................................................................................................................................................................... 599
Neighbor soft-reconfiguration...............................................................................................................................600
Redistribute iBGP route to OSPF......................................................................................................................... 600
Example - BGP in a VLT topology.........................................................................................................................603
Example - Three-tier CLOS topology with eBGP............................................................................................. 608
Debug BGP..................................................................................................................................................................613
BGP commands..........................................................................................................................................................613
Equal cost multi-path.....................................................................................................................................................648
Load balancing........................................................................................................................................................... 648
Maximum ECMP groups and paths...................................................................................................................... 652
ECMP commands......................................................................................................................................................652
IPv4 routing......................................................................................................................................................................656
Assign interface IP address.................................................................................................................................... 656
Configure static routing.......................................................................................................................................... 658
Address Resolution Protocol.................................................................................................................................. 658
IPv4 routing commands...........................................................................................................................................659
IPv6 routing......................................................................................................................................................................664
Enable or disable IPv6..............................................................................................................................................664
IPv6 addresses.......................................................................................................................................................... 665
Stateless autoconfiguration................................................................................................................................... 666
Neighbor Discovery.................................................................................................................................................. 667
Duplicate address discovery...................................................................................................................................668
Static IPv6 routing....................................................................................................................................................669
IPv6 destination unreachable.................................................................................................................................669
IPv6 hop-by-hop options........................................................................................................................................ 669
View IPv6 information..............................................................................................................................................670
IPv6 commands......................................................................................................................................................... 670
Open shortest path first................................................................................................................................................ 681
Autonomous system areas......................................................................................................................................682
Areas, networks, and neighbors............................................................................................................................ 682
Router types...............................................................................................................................................................683
Designated and backup designated routers....................................................................................................... 683
Link-state advertisements...................................................................................................................................... 684
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