HP 6120XG HP ProCurve Series 6120 Blade Switches Multicast and Routing Guide - Page 77
Changing the Route Loop Prevention Method, Displaying RIP Information, show ip rip
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Note IP Routing Features Configuring RIP ProCurve(rip)# redistribute static ProCurve(rip)# write memory Syntax: [no] redistribute < connected | static > Changing the Route Loop Prevention Method RIP can use the following methods to prevent routing loops: ■ Split horizon - the routing switch does not advertise a route on the same interface as the one on which the routing switch learned the route. ■ Poison reverse - the routing switch assigns a cost of 16 ("infinity" or "unreachable") to a route before advertising it on the same interface as the one on which the routing switch learned the route. This is the default. These loop prevention methods are configurable on an individual VLAN interface basis. These methods are in addition to RIP's maximum valid route cost of 15. Poison reverse is enabled by default. Disabling poison reverse causes the routing switch to revert to Split horizon. (Poison reverse is an extension of Split horizon.) To disable Poison reverse on an interface, and thereby enable Split horizon, enter the following: ProCurve(config)# vlan 1 ProCurve(vlan-1)# no ip rip poison-reverse Syntax: [no] ip rip poison-reverse Entering the command without the "no" option will re-enable Poison reverse. Displaying RIP Information All RIP configuration and status information is shown by the CLI command show ip rip and options off that command. The following RIP information can be displayed: RIP Information Type Page General Information 3-32 Interface Information 3-34 Peer Information 3-35 3-31