Configuring Split Horizon With Poison Reverse; Configuring Route Summarization; Configuring Route Redistribution - Cisco Nexus 7000 Series Configuration Manual
Nx-os unicast routing configuration
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Chapter 12
Configuring RIP
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .
To configure a RIP interface in passive mode, use the following command in interface configuration
mode:
Command
ip rip passive-interface
Example:
switch(config-if)# ip rip
passive-interface
Configuring Split Horizon with Poison Reverse
You can configure an interface to advertise routes learned by RIP as unreachable over the interface that
learned the routes by enabling poison reverse.
To configure split horizon with poison reverse on an interface, use the following command in interface
configuration mode:
Command
ip rip poison-reverse
Example:
switch(config-if)# ip rip poison-reverse
Configuring Route Summarization
You can create aggregate addresses that are represented in the routing table by a summary address. Cisco
NX-OS advertises the summary address metric that is the smallest metric of all the more-specific routes.
To configure a summary address on an interface, use the following command in interface configuration
mode:
Command
ip rip summary-address ip-prefix/mask-len
Example:
switch(config-if)# ip router rip
summary-address 192.0.2.0/24
Configuring Route Redistribution
You can configure RIP to accept routing information from another routing protocol and redistribute that
information through the RIP network. Redistributed routes can optionally be assigned a default route.
BEFORE YOU BEGIN
Ensure that you have enabled the RIP feature (see the
Enter the correct VDC if necessary before configuring RIP.
OL-20002-02
Purpose
Sets the interface into passive mode.
Purpose
Enables split horizon with poison reverse. Split
horizon with poison reverse is disabled by default.
Purpose
Configures a summary address for RIP for IPv4
addresses.
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
"Enabling the RIP Feature" section on page
Configuring RIP
12-5).
12-11
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