26.1. RIP Resource

26.1. RIP Resource
	Chapter 26. RIP - Routing Information Protocol

The RIP resource implements the homonym routing protocols RIP1 and RIP2 for TCP/IP networks. RIP1 and RIP2 protocols periodically extract information from IP Routings table and send them to the neighbour systems.

Sent information are:

a list of destination networks managed by the IP router of Abilis CPX;
the “distance” (or metric) needed to reach the destination networks.

Activating the “Routing Protocol” (RP) in the IP Resource is needed.

26.1.1. Activating the RIP resource

Add the resource to the Abilis system with the following command.

[15:43:30] ABILIS_CPX:a res:rip

RES:RIP ALREADY EXISTS

The RIP resource may already exist in the system, but may not yet be active: set it active with the command:

[16:02:48] ABILIS_CPX:s act res:rip

COMMAND EXECUTED

	Caution
	After adding or setting the RIP active, you must restart the Abilis to make the resource running (use the command warm start to reboot the Abilis).

[11:01:39] ABILIS_CPX:s p rip act:yes

COMMAND EXECUTED

[11:01:39] ABILIS_CPX:d p rip

RES:Rip - Not Saved (SAVE CONF), Not Refreshed (INIT) -------------------------
       ------------------------------------------------------------------------
Run    DESCR:Routing_Information_Protocol
       LOG:NO      ACT:YES  locport:520  fifo:15  max-routes:500    SH:PR
       AUT:NO      PWD:                  UT:30    LT:180   GT:120   ASBR:YES
       - ASBR section ---------------------------------------------------------
       LOCAL:YES           STATIC:YES           OSPF:NO
       LOCAL-METRIC:*      STATIC-METRIC:*      OSPF-METRIC:*
       DEF-METRIC:1

26.1.2. RIP resource parameters

Use the following command to display the parameters of the resource; the command d p rip ? displays the meaning of all parameters.

[16:02:53] ABILIS_CPX:d p rip

RES:Rip -----------------------------------------------------------------------
Run    DESCR:Routing_Information_Protocol
       LOG:NO      ACT:YES  locport:520  fifo:15  max-routes:500    SH:PR
       AUT:NO      PWD:                  UT:30    LT:180   GT:120   ASBR:YES
       - ASBR section ---------------------------------------------------------
       LOCAL:YES           STATIC:YES           OSPF:NO
       LOCAL-METRIC:*      STATIC-METRIC:*      OSPF-METRIC:*
       DEF-METRIC:1

Meaning of the most important parameters:

LOG: Logging functionalities activation/deactivation.
ACT: RIP runtime activation/deactivation.
udp-locport: RIP local UDP port [520]
fifo: Number of buffers in the RIP fifo [1..50]
maxroutes: Maximum number of routes in the route table [500..10000]
SH: Split Horizon: this parameter sets the routing update mode used by the RIP resource [NO: update information sent by the RIP resource on the net will include all the IP routings stored in the IP routing table; YES: update information sent by the RIP resource on the net will only include those routings not obtained from the interface where the information are sent to. This updating procedure is referred as “Split Horizon”; PR: routings should not be included in the update information, however they are sent as well but their metric is set to 16 hops. This updating procedure is referred as “Split Horizon and Poison Reverse”].
AUT: This parameter sets the authentication functionality of information received and forwarded by the RIP resource [NO: no authentication is applied on the information exchanged by the Abilis CPX with other routers; STD: authentication algorithm includes sending update messages of the password as it is set in the parameter PWD; MD5: the algorithm MD5 is used for authenticating the update messages jointly with the password set in the parameter PWD].
PWD: It sets the password used for the authentication function.
UT: RIP updates period [10..600]
LT: RIP route life time [30..1800]
GT: RIP garbage collection period [10..1800]
ASBR: Autonomous System Boundary Router: the router locates in point where RIP AS connects with other AS that does not use RIP routing protocol. An ASBR is used to distribute routes received from other ASs throughout its own AS. Usually this parameter will set to YES, because only in this case RIP can import external routing. In case that ASBR is set to NO, RIP table will be filled only by routings obtained by other RIP routers in the network.
LOCAL, STATIC, OSPF: Enables/disables usage of LOCAL, STATIC and OSPF routes for the redistribution into RIP [NO, YES];
LOCAL-METRIC, STATIC-METRIC, OSPF-METRIC: Metric used to redistribute LOCAL, STATIC and OSPF routes imported from the IPRTR route table into RIP [0..16, *]; the value * stands for “use default”, i.e. indicates to use the DEF-METRIC parameter value.
DEF-METRIC: It sets the default metric value that will be used for redistribution routes, of any type, imported from the IPRTR routing table into RIP. Used when a “protocol specific” value does not override it.

The following command allows the administrator to change the configuration of the resource:

s p rip parameter:value...

	Caution
	To activate the changes made on the upper case parameters, execute the initialization command init res:rip; while to set act the changes made on the lowercase parameters a save conf and an Abilis restart are required (i.e. With warm start command).

Normally you don't need to configure all the listed parameters. Many of them belong to the RIP protocol advanced options, which are optional.

The basic options are LOG:YES to activate resource, and ASBR:YES to allow import of external routing.


Chapter 26. RIP - Routing Information Protocol		26.2. RIP External Routes filter table