Quick Reference Guide

xxii PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Basic configuration tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .755
Enabling BGP4 on the router . . . . . . . . . . . . . . . . . . . . . . . . . .755
Changing the router ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .755
Setting the local AS number . . . . . . . . . . . . . . . . . . . . . . . . . . .756
Adding a loopback interface . . . . . . . . . . . . . . . . . . . . . . . . . . .756
Adding BGP4 neighbors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .756
Adding a BGP4 peer group . . . . . . . . . . . . . . . . . . . . . . . . . . . .763
Optional configuration tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .767
Changing the Keep Alive Time and Hold Time . . . . . . . . . . . . .767
Changing the BGP4 next-hop update timer . . . . . . . . . . . . . . .768
Enabling fast external fallover. . . . . . . . . . . . . . . . . . . . . . . . . .768
Changing the maximum number of paths for
BGP4 load sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .769
Customizing BGP4 load sharing . . . . . . . . . . . . . . . . . . . . . . . .770
Specifying a list of networks to advertise. . . . . . . . . . . . . . . . . 771
Changing the default local preference . . . . . . . . . . . . . . . . . . .772
Using the IP default route as a valid next hop for
a BGP4 route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .773
Advertising the default route. . . . . . . . . . . . . . . . . . . . . . . . . . .773
Changing the default MED (Metric) used for
route redistribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .773
Enabling next-hop recursion . . . . . . . . . . . . . . . . . . . . . . . . . . . 774
Changing administrative distances . . . . . . . . . . . . . . . . . . . . .777
Requiring the first AS to be the neighbor AS . . . . . . . . . . . . . .778
Disabling or re-enabling comparison of the AS-Path length . .778
Enabling or disabling comparison of the router IDs . . . . . . . .779
Configuring the Layer 3 Switch to always compare
Multi-Exit Discriminators (MEDs) . . . . . . . . . . . . . . . . . . . . . . .779
Treating missing MEDs as the worst MEDs . . . . . . . . . . . . . . .780
Configuring route reflection parameters . . . . . . . . . . . . . . . . .780
Aggregating routes advertised to BGP4 neighbors . . . . . . . . .784
Modifying redistribution parameters . . . . . . . . . . . . . . . . . . . . . . . .785
Redistributing connected routes. . . . . . . . . . . . . . . . . . . . . . . .785
Redistributing RIP routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .786
Redistributing OSPF external routes. . . . . . . . . . . . . . . . . . . . .786
Redistributing static routes . . . . . . . . . . . . . . . . . . . . . . . . . . . .787
Disabling or re-enabling re-advertisement of all learned
BGP4 routes to all BGP4 neighbors . . . . . . . . . . . . . . . . . . . . .787
Redistributing IBGP routes into RIP and OSPF. . . . . . . . . . . . .788
Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .788
Filtering specific IP addresses . . . . . . . . . . . . . . . . . . . . . . . . .788
Filtering AS-paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .790
Filtering communities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .793
Defining IP prefix lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .795
Defining neighbor distribute lists . . . . . . . . . . . . . . . . . . . . . . .796
Defining route maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .797
Using a table map to set the rag value. . . . . . . . . . . . . . . . . . .805
Configuring cooperative BGP4 route filtering. . . . . . . . . . . . . .806