Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 9)

Brocade ICX 6650 Layer 3 Routing Configuration Guide ix
53-1002603-01
Advertising the default route. . . . . . . . . . . . . . . . . . . . . . . . . . .310
Changing the default MED (Metric) used for
route redistribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
Enabling next-hop recursion . . . . . . . . . . . . . . . . . . . . . . . . . . .310
Changing administrative distances . . . . . . . . . . . . . . . . . . . . .313
Requiring the first AS to be the neighbor AS . . . . . . . . . . . . . .315
Disabling or re-enabling comparison of the
AS-Path length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315
Enabling or disabling comparison of the router IDs . . . . . . . .315
Configuring the Layer 3 switch to always compare
Multi-Exit Discriminators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316
Treating missing MEDs as the worst MEDs . . . . . . . . . . . . . . .316
Route reflection parameter configuration . . . . . . . . . . . . . . . . 317
Configuration notes for BGP4 autonomous systems . . . . . . .320
Aggregating routes advertised to BGP4 neighbors . . . . . . . . .323
Configuring BGP4 graceful restart. . . . . . . . . . . . . . . . . . . . . . . . . .324
Configuring timers for BGP4 graceful restart (optional) . . . . .324
BGP null0 routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325
Configuration steps for BGP null0 routing . . . . . . . . . . . . . . . .326
Configuration examples for BGP null0 routing. . . . . . . . . . . . .327
Show commands for BGP null0 routing . . . . . . . . . . . . . . . . . .328
Modifying redistribution parameters . . . . . . . . . . . . . . . . . . . . . . . .330
Redistributing connected routes. . . . . . . . . . . . . . . . . . . . . . . .330
Redistributing RIP routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331
Redistributing OSPF external routes. . . . . . . . . . . . . . . . . . . . .331
Redistributing static routes . . . . . . . . . . . . . . . . . . . . . . . . . . . .332
Disabling or re-enabling re-advertisement of all learned
BGP4 routes to all BGP4 neighbors . . . . . . . . . . . . . . . . . . . . .332
Redistributing IBGP routes into RIP and OSPF. . . . . . . . . . . . .332
Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333
Specific IP address filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . .333
AS-path filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .334
BGP4 filtering communities . . . . . . . . . . . . . . . . . . . . . . . . . . .338
Defining IP prefix lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .340
Defining neighbor distribute lists . . . . . . . . . . . . . . . . . . . . . . .341
Defining route maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .342
Using a table map to set the tag value. . . . . . . . . . . . . . . . . . .350
Configuring cooperative BGP4 route filtering. . . . . . . . . . . . . .351
Route flap dampening configuration . . . . . . . . . . . . . . . . . . . . . . . .354
Globally configuring route flap dampening . . . . . . . . . . . . . . .355
Using a route map to configure route flap dampening
for specific routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355
Using a route map to configure route flap dampening for
a specific neighbor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356
Removing route dampening from a route. . . . . . . . . . . . . . . . .357
Removing route dampening from neighbor routes
suppressed due to aggregation . . . . . . . . . . . . . . . . . . . . . . . .357
Displaying and clearing route flap dampening statistics . . . .359
Generating traps for BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .360