网G教程路由.ppt

Split-horizon and Poison Reverse 162.11.5.0 162.11.9.0 162.11.8.0 162.11.10.0 162.11.7.0 Router A Router B Router C S0 S1 S0 S0 E0 E0 162.11.6.0 Router D S0 S1 Flash (Trigger) Updates Flash Updates，也就是觸發更新，加速了收斂的速度。當一個路由器注意到一個直接相連的子網路無效後，它立刻在它介面發出路由更新，而不是等待到更新的時間到。這使得無效路由快速廣播，和更快的計算hold-down時間，其他的相鄰居路由器也同樣做。 RIP和IGRP比較 Feature RIP(Defaults) IGRP(Defaults) Update Timer 30 seconds 90 seconds Metric Hop Count Function of bandwidth and delay (defaults); can include reliability, load, and MTU Holddown timer 180 280 Flash update? Yes Yes Mask sent in update No for RIPv1, yes for RIPv2 No RIP和IGRP的設定 Command Configuration mode router rip Global router igrp process-id Global network net-number Router subcommand passive-interface type number Router subcommand maximum-path x Router subcommand IP RIP and IGRP Configuration Commands RIP和IGRP的設定 Command Function show ip route [subnet] Shows entire routing, or one entry if subnet is entered show ip protocol Routing protocol parameters, current timer values debug ip rip Issue log messages for each RIP update debug ip igrp transaction Issue log messages with details of the IGRP updates debug ip igrp events Issuse log message with each IGRP packet ping Sends and receives ICMP echo messages to verify connectivity trace Sends series of ICMP echo with increasing TTL values to verify the current route to a host IP RIP and IGRP EXEC Commands RIP的設定 - porsche porsche(config)#router rip porsche(config-router)# network 172.1.0.0 porsche(config-router)# network 172.3.0.0 porsche(config-router)# network 172.5.0.0 RIP的設定 - ferrari porsche(config)#router rip porsche(config-router)# network 172.1.0.0 porsche(config-router)# network 172.2.0.0 RIP的設定 - lotus porsche(config)#router rip porsche(config-router)# network 172.3.0.0 porsche(config-router)# network 172.4.0.0 IGRP的設定 interface ethernet 0 ip address 10.1.2.3 255.255.255.0 interface ethernet 1 ip address 172.16.1.1 255.255.255.0 interface ethernet 2 ip address 172.16.2.1