Lucent Technologies Cajun P550 Guide User manual

Command Line Interface Protocol
Configuration Guide
Cajun™ P550/P220 Switch Version 4.0

Lucent Technologies Command Line Interface Protocol Configuration Guide, Volume 1
© Copyright LUCENT TECHNOLOGIES 1999 ALL RIGHTS RESERVED
Produced in USA, November 1999
The products, specifications, and other technical information regarding the products contained in this
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ALL OTHER TRADEMARKS MENTIONED IN THIS DOCUMENT ARE PROPERTY OF THEIR
RESPECTIVE OWNERS
Revisions: This is a new manual.
Version 4.0

Protocol Configuration Guide iii

    
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
OSPF Basic Configuration Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Restrictions using Stub and Not-So-Stubby Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Configuring OSPF using the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Configuring a Basic OSPF Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Optional OSPF Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
OSPF Configuration Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Basic OSPF Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Router Summarization Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Virtual Link Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
Stub Area Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Not-So-Stubby Area (NSSA) Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Verifying OSPF Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13
    
In This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
RIP Configuration Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Configuring RIP using the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Creating a Basic RIP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Optional RIP Configuration Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
RIP Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
Displaying RIP Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6


Command Line Interface Protocol Configuration Guide 1-1


This chapter describes how to configure the Open Shortest Path First (OSPF) protocol
using the CLI and GUI.
  
 OSPF Basic Configuration Diagram
 Configuring OSPF using the CLI
 OSPF Configuration Examples

Configuring OSPF
1-2 Command Line Interface Protocol Configuration Guide
   
ospf1.vsd
Define the OSPF area(s).
Command:area
area-id
Mode: Router:OSPF
Modify the OSPF area parameters
Command:area
area-id
command with various parameters.
The "Optional OSPF Configuration Tasks" section
provides details.
Mode: Router:OSPF
Modify the OSPF parameters on the interface.
Command:various commands. The "Configuring a Basic OSPF
Configuration" section provides details.
Mode: Interface Configuration
Save the configuration.
Command:copy running-config startup-config
Mode: any mode (excluding User)
Enable OSPF and enter Router:OSPF mode.
Command:router ospf
Mode: Global Configuration
Specify the interface(s) on which OSPF runs and the area ID for
each interface.
Command:network
ip-address wildcard-mask area area-id
Mode: Router:OSPF
If an OSPF area does not have a physical connection to the
backbone, establish a virtual link at both endpoints.
Command:area
area-id virtual-link
Mode: Router:OSPF
Set the OSPF router ID. For this to take effect, OSPF must be
disabled.
Command:no router ospf
ip ospf router-id
router-id
Mode: Global Configuration

Configuring OSPF
Command Line Interface Protocol Configuration Guide 1-3
     
Because stub and not-so-stubby areas do not carry external routes, an area can be
defined as a stub or not-so-stubby area only when:
❒All OSPF routers inside the stub area are configured as stub routers. These routers
become neighbors.
❒The area is not needed as a transit link for virtual links.
❒No Autonomous System Boundary Router (ASBR) is internal to the stub area.
❒The area is not the backbone area (area 0.0.0.0).
❒There is a single exit point from the area or if there are multiple exits (Area Border
Routers), routing outside the area does not have to take an optimal path.
    
This section describes how to configure and verify OSPF using the CLI. It also includes
configuration examples.
    
To create a basic OSPF configuration:
1. Go to Global Configuration mode.
2. Set the OSPF router ID. For this to take effect, OSPF must be disabled.
3. Enable OSPF and enter Router: OSPF mode.
Cajun (configure)# router ospf
Cajun (configure router:ospf)#
 
no router ospf Disable OSPF.
ip ospf router-id router-id
no ospf router-id router-id - the IP address of the router. The no form of the command reverts to the
system default which is the lowest IP address
configured on the system.
Cajun (configure)# no router ospf
Cajun (configure)# ip ospf router-id 122.23.4.5

Configuring OSPF
1-4 Command Line Interface Protocol Configuration Guide
4. Define the OSPF area(s).
5. Specify the interface(s) on which OSPF runs and the area ID for each interface.
6. If an OSPF area does not have a physical connection to the backbone, read this
step. Otherwise, go to the next step.
When an OSPF area is not physically connected to the backbone, establish a virtual
link at both endpoints. This is done using the area area-id virtual-link command
described on the next page.
Note: If you are planning to configure an OSPF area as a stub area, virtual
links cannot be established through stub areas.
 
area area-id area-id - a number in four-part, dotted-decimal
notation that identifies the area. For example,
0.0.0.1 indicates area 1. When using OSPF in a
single area, use 0.0.0.0.
Cajun (configure router:ospf)# area 0.0.0.1
 
network ip-address
wildcard-mask area area-id ip-address - the IP address of the interface.
wildcard-mask - an inverse mark that determines
how to read ip-address. The mask has wildcard bits
where 0 is a match and 1 is "don’t care".
area-id - the area identifier.
Cajun (configure router:ospf)# network 12.21.2.3 0.0.0.0 area 0.0.0.1

Configuring OSPF
Command Line Interface Protocol Configuration Guide 1-5
Table 1-1. Area Virtual Link Command
7. Exit to Global Configuration mode and specify the interface on which OSPF is
running. This enters Interface Configuration mode. For example:
Cajun (configure router:ospf)# exit
Cajun (configure)# interface serial0
Cajun (configure-if:serial0)
area area-id virtual-link router-id [authentication-key key][dead-interval seconds]
[hello-interval seconds] [message-digest-key key-id md5 key] [retransmit-interval
seconds] [transit-delay seconds]
area
area-id - area ID assigned to the transit area for the virtual link (decimal or
dotted-decimal format).
virtual-link
router-id - the router ID of the virtual link neighbor. To obtain a neighbor’s router ID,
Telnet to the router and enter the show ip ospf command.
authentication-key
key - password for the neighboring OSPF routers on a network segment using OSPF’s
simple password authentication. Up to 8 bytes of any continuous string of characters is
allowed. All neighboring routers on the same network must have the same password
to route OSPF traffic.
dead-interval
seconds - the number of seconds hello packets must not have been seen before its
neighbors declare the router down. The default is four times the hello-interval value.
The range is 1to 65535. This value must be the same for all nodes on the specific
network.
hello-interval
seconds - number of seconds between the hello packets on the virtual link. The default
is 10 seconds and the range is 1to 65535. This value must be the same for all routers
and access servers attached to a common network.
message-digest-key
key-id - a number the routers use for MD5 authentication. The range is 1to 255.
md5 key - password the routers use for MD5 authentication. Up to 16 alphanumeric
characters are allowed. All neighboring routers on the same network must have the
same key-id and md5 key to route OSPF traffic.
retransmit-interval
seconds - number of seconds between link state advertisement retransmissions for
adjacencies belonging to an interface. The default is 5seconds. The range is 1 to 3600
seconds.
transit-delay
seconds - estimated time to transmit a link state update packet on the virtual link. The
default is 1second and the range is 1to 3600 seconds.

Configuring OSPF
1-6 Command Line Interface Protocol Configuration Guide
8. Define or modify the OSPF interface parameters.
 
ip ospf authentication-key
password The password neighboring OSPF routers on a
network segment use for OSPF’s simple password
authentication. Up to 8 bytes of any continuous
string of characters is allowed. All neighboring
routers on the same network must have the same
password to route OSPF traffic.
ip ospf cost cost The cost to send a packet on an OSPF interface.
This is an unsigned integer expressed as the link
state metric. The range is 1to 65535.
Example OSPF interface costs are:
• T1 (1.544-Mbps serial) - 128
• Ethernet - 10
All routers on the same link must have the same
cost.
ip ospf dead-interval
seconds Number of seconds hello packets must not have
been seen before its neighbors declare the router
down. This value must be the same on
neighboring routers.
The default is four times the hello interval.
ip ospf hello-interval seconds Number of seconds between the hello packets
sent to the OSPF interface. This value must be the
same on neighboring routers. The default is 10
seconds.
ip ospf message-digest-key
keyid md5 key Enable OSPF MD5 authentication on an OSPF
interface. By default, this is disabled.
keyid - identifier in the range 1to 255.
key - alphanumeric password of up to 16 bytes.
ip ospf poll-interval seconds The time interval between hellos sent to an
inactive interface. The default is 120 seconds. The
range is 0to 3600 seconds.
ip ospf priority priority An 8-bit unsigned integer that represents the
router priority level. The range is 0to 255. The
default is 1.
A value of 0 indicates an interface cannot be
elected as a designated router (DR) or backup
designated router (BDR).
ip ospf retransmit-interval
seconds Number of seconds between link state
advertisement retransmissions for adjacencies
belonging to the interface. The default is 5
seconds.
This value must be greater than the expected
round-trip delay between two devices on the
attached network. The range is 1to 65535
seconds.

Configuring OSPF
Command Line Interface Protocol Configuration Guide 1-7
9. Enter copy running-config startup-config to save the configuration.
10. Configure the optional OSPF parameters as described in the next section.
ip ospf network
{broadcast| non-broadcast|
point-to-multipoint
[non-broadcast]}
Configure broadcast networks as nonbroadcast,
multiaccess networks when, for example, there
are routers in the network that do not support
multicast addressing.
broadcast - sets the network type for the
interface to broadcast. Ethernet is a broadcast
network.
non-broadcast - sets the network type for the
interface to nonbroadcast, multiaccess (Frame
Relay, X.25).
point-to-multipoint [non-broadcast] - sets
the network type to point-to-multipoint (HDLC,
PPP).
non-broadcast - sets the point-to-multipoint
network to nonbroadcast. When you include this
keyword, configure the OSPF routers
interconnecting to the nonbroadcast network
using the neighbor command.
ip ospf transmit delay seconds Estimated time to transmit a link state update
packet on the interface. The default is 1second.
The range is 1to 65535 seconds.
neighbor ip-address [priority
number] [poll-interval
seconds]
For point-to-multipoint non-broadcast networks
only, the OSPF routers interconnecting to a
nonbroadcast network.
ip-address - interface IP address of the neighbor.
number - an 8-bit number indicating the router
priority value of the nonbroadcast neighbor
associated with the specified IP address. The
default is 0.
seconds - an unsigned integer value representing
the poll interval. This value should be larger than
the hello interval. The default is 120 seconds.
 

Configuring OSPF
1-8 Command Line Interface Protocol Configuration Guide
   
Table 1-2. Tasks and Commands to Configure Additional OSPF Parameters
  
Router:OSPF Mode
Define an OSPF area to be a stub
area or a NSSA. Add the command
to all routers within the area. The
no form of a command removes a
stub area or NSSA.
The "OSPF Configuration
Examples" section includes stub
area and NSSA configurations.
The no form removes a stub area or
NSSA definition.
area area-id stub
no area area-id stub
area area-id nssa
no area area-id nssa
area-id - identifier for the
stub/NSSA. This is a decimal
value or an IP address.
(For ABRs only) The cost of the
default route injected in the stub or
NSSA. The default cost is 1.
The no form restores the default.
area area-id
default-cost cost
no area area-id
default-cost
area-id - identifier for the
stub/NSSA. This is a decimal
value or an IP address.
cost - a 24-bit number that
represents the cost for the default
summary route within the stub
or NSSA.
Configure route summarization on
the ABR to consolidate and
summarize routes at an area
boundary. This causes a single
summary route to be advertised to
other areas. Route summarization
minimizes the number of routing
table entries and localizes the
impact of a topology change.
The no form disables route
summarization.
area area-id range
ip-address mask
[no-advertise]
no area area-id range
area-id - identifier of the area
about which routes are to be
summarized.
ip-address - IP address of the
network to be advertised.
mask - IP subnet mask of the
network to be advertised.
no-advertise - suppresses
advertisements of IP routes.
Configure the link-state
advertisements (LSAs).
The no form removes an LSA
definition.
area area-id ase-filter
no area area-id ase-filter
area area-id
translate-nssa-to-
external
no area area-id
translate-nssa-to-
external
Filter type 3 ASE LSAs.
Translate type 7 LSAs into type 5.

Configuring OSPF
Command Line Interface Protocol Configuration Guide 1-9
Optional OSPF Commands
  
This section includes:
❒Basic OSPF Configurations
❒Router Summarization Configuration
❒Virtual Link Configuration
❒Stub Area Configuration
❒Not-So-Stubby Area (NSSA) Configuration
Specify a router as an Autonomous
System Boundary Router (ASBR).
An ASBR has at least one interface
into an external internetwork
(another autonomous system), such
as a non-OSPF network. The ASBR
redistributes non-OSPF network
information to the OSPF network,
and vice versa.
The no form disables ASBR status.
ip ospf
as-boundary-router
no ip ospf
as-boundary-router
None
Enable the automatic creation of
virtual links. By default, this is
disabled.
The no form restores the default.
ip ospf auto-vlink-create
no ip ospf
auto-vlink-create
None
Modify the metric type for external
routes to type1 or type2. The
defaults are:
•local - type1
•rip - type2
•static-hp - type2
•static-lp - type2
The no form restores the default for
the specified external route.
ip ospf ext-route-metric
{local | rip | static-hp |
static-lp} {type1 | type2}
no ip ospf
ext-route-metric
None
Configure the maximum number of
SPF paths OSPF can use. The default
is 640 paths.
The no form restores the default.
ip ospf max-paths paths
no ip ospf max-paths paths - the maximum number of
SPF paths. The range is 640 to
16000.
Enable/disable OSPF packet tracing.
The no form disables OSPF packet
tracing.
ip ospf packet tracing
no ip ospf packet tracing None
  

Configuring OSPF
1-10 Command Line Interface Protocol Configuration Guide
  
This example enables OSPF and redistributes RIP into OSPF and OSPF into RIP.
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 120.1.2.2 0.0.255.255 area 0.0.0.0
Cajun (configure router:ospf)# exit
Cajun (configure)# router rip
Cajun (configure router:rip)# network 120.2.2.2
This example enables OSPF routing, defines three OSPF areas (0.0.0.1, 0.0.0.2, and
0.0.0.3), masks specific address ranges within areas 0.0.0.1 and 0.0.0.2, and enables
OSPF for all other networks using area 0.0.0.3.
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 111.1.5.3. 0.0.0.255 area 0.0.0.1
Cajun (configure router:ospf)# network 121.9.5.0 0.0.0.255 area 0.0.0.2
Cajun (configure router:ospf)# network 0.0.0.0 255.255.255.255 area 0.0.0.3
Cajun (configure router:ospf)# exit
!
!Interface testospf1 is in area 0.0.0.1
Cajun (configure)# interface testospf1
Cajun (config-if:testospf1)# ip address 111.1.5.20 255.255.255.0
Cajun (config-if:testospf1)# exit
!
!Interface testospf2 is in area 0.0.0.2
Cajun (configure)# interface testospf2
Cajun (config-if:testospf2)# ip address 121.9.5.8 255.255.255.0
Cajun (config-if:testospf2)# exit
!
!Interface testospf3 is in area 0.0.0.3
Cajun (configure)# interface testospf3
Cajun (config-if:testospf3)# ip address 121.19.0.0 255.255.255.0
Cajun (config-if:testospf3)# exit
!
!This saves the configuration.
Cajun (configure)# copy running-config startup-config
   
In this example, route summarization occurs in both directions between areas 0.0.0.1
and 0.0.0.0. This is achieved by masking the first three left-most bits of the subnet using
mask 255.255.224.0.
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 172.11.6.2 0.0.0.0 area 0.0.0.1
Cajun (configure router:ospf)# network 152.11.33.5 0.0.0.0 area 0.0.0.0
Cajun (configure router:ospf)# area 0.0.0.0 range 172.4.4.2 255.255.224.0
Cajun (configure router:ospf)# area 0.0.0.1 range 172.4.2.1 255.255.224.0
Cajun (configure router:ospf)# exit
!
!This saves the configuration.
Cajun (configure)# copy running-config startup-config

Configuring OSPF
Command Line Interface Protocol Configuration Guide 1-11
! " 
Inthisexample,area0.0.0.3doesnothaveadirectphysicalconnectiontothebackbone
(area 0.0.0.0). To establish a backbone connection, a virtual link is configured between
Router_1 and Router_2. Area 0.0.0.1 is the transit area and Router_1 is the entry point
into area 0.0.0.0. Router_2 has a logical connection to the backbone through the transit
area.
!Configuration on Router_2
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 172.11.0.0 0.0.0.255 area 0.0.0.1
Cajun (configure router:ospf)# network 172.17.0.0 0.0.0.255 area 0.0.0.3
!This command defines area 0.0.0.1 as the transit area and the router ID
!of the other side of the virtual link is configured.
Cajun (configure router:ospf)# area 1.0.0.0 virtual-link 15.5.6.3
!
!Configuration on Router_1
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 11.10.0.0 0.0.0.255 area 0.0.0.0
Cajun (configure router:ospf)# network 11.25.0.0 0.0.0.255 area 0.0.0.1
!
!This command defines area 0.0.0.1 as the transit area and the router ID
!of the other side of the virtual link is configured.
Cajun (configure router:ospf)# area 0.0.0.1 virtual-link 15.15.22.0
Cajun (configure router:ospf)# exit
!
!This saves the configuration.
Cajun (configure)# copy running-config startup-config
Area 0.0.0.1
Area 0.0.0.0
Area 0.0.0.3
Router_1
Router_2
Router ID
15.15.22.0
Router ID
15.5.6.3
ospf2.vsd

Configuring OSPF
1-12 Command Line Interface Protocol Configuration Guide
  
In this example, area 0.0.0.2 is the stub area. No external routes from the external
autonomous system are forwarded into the stub.
!Configuration on Router_2
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 192.168.20.0 0.0.0.255 area 0.0.0.0
Cajun (configure router:ospf)# network 192.168.21.0 0.0.0.255 area 0.0.0.2
Cajun (configure router:ospf)# area 0.0.0.2 stub
!
!Configuration on Router_3
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 192.168.21.0 0.0.0.255 area 0.0.0.2
Cajun (configure router:ospf)# area 0.0.0.2 stub
Cajun (configure router:ospf)# exit
!
!This saves the configuration.
Cajun (configure)# copy running-config startup-config
  #$ 
In this example, the only routes that appears in Router_3’s routing table are intra-area
routes and the default route.
!Configuration on Router_2
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 192.168.20.0 0.0.0.255 area 0.0.0.0
Cajun (configure router:ospf)# network 192.168.21.0 0.0.0.255 area 0.0.0.2
192.168.21.1
S0 192.168.21.2
S0
Stub Area 0.0.0.2
Area 0.0.0.0
Router_2
External AS 192.168.20.1
Router_3
E0
ospf3.vsd
192.168.21.1
S0 192.168.21.2
S0
Not-So-Stubby
Area 0.0.0.2
Area 0.0.0.0
Router_2
External AS 192.168.20.1
Router_3
E0
ospf4.vsd

Configuring OSPF
Command Line Interface Protocol Configuration Guide 1-13
Cajun (configure router:ospf)# area 0.0.0.2 nssa
!
!Configuration on Router_3
Cajun (configure)# router ospf
Cajun (configure router:ospf)# network 192.168.21.0 0.0.0.255 area 0.0.0.2
Cajun (configure router:ospf)# area 0.0.0.2 nssa
Cajun (configure router:ospf)# exit
!
!This saves the configuration.
Cajun (configure)# copy running-config startup-config
!  
To verify OSPF operation and display statistics, use these show commands in any
command mode. For output field descriptions, refer to the Cajun P550/P220TM Command
Line Interface Reference Guide.
 
show ip ospf Display the number of times the shortest path first
(SPF) algorithm has executed, the number of areas in
the router, and the number of interfaces in an area.
show ip ospf database
[{asbr-summary | external |
network | nssa-external |
router | summary}]
Display the router ID and the link-state database.
•asbr-summary - information about the ASBR
summary LSAs.
•external - information about the external LSAs.
•network - information about the network LSAs.
•nssa-external - information about the NSSA
external LSAs.
•router - information about the router LSAs.
•summary - entire database information.
show ip ospf interface
[interface-name]Use this command to verify the interfaces have been
configured in the intended areas. This command also
shows the timer intervals including the hello interval.
show ip ospf neighbor
[interface-name]
[neighbor-id]
Display details about the neighbors by interface name
or neighbor ID.
show ip ospf virtual-links Display information about the virtual links.

Command Line Interface Protocol Configuration Guide 2-1


This chapter describes how to configure the Routing Information Protocol (RIP) using
the CLI and GUI.
  
 RIP Configuration Diagram
 Configuring RIP using the CLI

Configuring RIP
2-2 Command Line Interface Protocol Configuration Guide
  
rip1.vsd
Enable RIP and enter Router:RIP mode.
Command:router rip
Mode: Global Configuration
Specify a list of networks for the RIP routing process.
Command:network
ip-address
[
wildcard-mask
]
Mode: Router:RIP
Specify the interface on which you are configuring RIP.
This enters Interface Configuration mode.
Command:interface
name
Mode: Router:RIP or Global Configuration
If the interface is receiving/sending RIP Version 2 packets,
define the authentication password and mode.
Command:ip rip authentication key
password
ip rip authentication mode {text | md5}
Mode: Interface Configuration
Repeat these steps to configure other interfaces for RIP
routing.
Specify the RIP version on the interface.
Command:ip rip receive version [1] [2]
ip rip send version [1] [2]
Mode: Interface Configuration
Define the neighboring peer router(s) with which to
exchange routing information.
Command:neighbor
ip-address
Mode: Router:RIP
Save the configuration.
Command:copy running-config startup-config
Mode: any mode (excluding User)

Configuring RIP
Command Line Interface Protocol Configuration Guide 2-3
    
This section describes how to configure RIP using the CLI. It also includes a configuration
example.
   % 
To create a basic RIP configuration:
1. Go to Global Configuration mode.
2. Enable RIP and enter Router:RIP mode.
Cajun (configure)# router rip
Cajun (configure router:rip)#
3. Specify a list of networks for the RIP routing process. This sends RIP updates
to the interfaces in these networks. When an interface’s network is not
specified, it is not advertised in any RIP update.
4. Enter copy running-config startup-config to save the configuration. For
example:
Cajun (configure router:rip)# copy running-config startup-config
Wrote running-config to '/nvram/startup.txt'
Cajun (configure router:rip)#
To configure optional RIP parameters, refer to the next section.
 %  
Table 2-1 lists the tasks and commands to configure additional RIP parameters.
Command Description
network ip-address
[wildcard-mask]ip-address - IP address of the network of
directly connected networks.
wildcard-mask - mask of the network on
which RIP is to run.
Cajun (configure router:rip)# network 12.21.2.3 0.255.255.255
Cajun (configure router:rip)# network 15.8.2.32

Configuring RIP
2-4 Command Line Interface Protocol Configuration Guide
Table 2-1. Optional RIP Tasks and Commands
Task Command Parameter
Router:RIP Mode
Define the neighboring peer
router(s) with which to
exchange routing information.
Note: Adding one or more RIP
neighbors ensures that the
router only accepts
information from these
neighbors. Consequently, all
other information is filtered.
Do not create RIP
neighbor(s) if you do not
want to filter RIP
information from the
network.
neighbor ip-address ip-address- IP address of a peer
router with which to
exchangeroutinginformation.
Change the interpacket delay for
RIP updates. The default is no
delay (0 milliseconds).
This command is useful when a
high-end router is sending at
high-speed to a low-speed
router.
output-delay
milliseconds milliseconds - the delay between packets in a
multiple-packet RIP update.
The range is 8to 50
milliseconds.
Globally enable/disable the use
of RIP triggered updates. The
default is disabled.
triggered updates
no triggered updates None
Interface Configuration Mode
When an interface is
receiving/sending RIP Version 2
packets, specify the
authentication password and
mode. The default
authentication mode is text.
ip rip authentication
key password
ip rip authentication
mode {text | md5}
password - a string of up to 16
characters that represents the
authentication password used
on the interface.
text - clear text
authentication. This method is
suggested when securityis not
an issue.
md5 - keyed MD5
authentication.
Enable/disable split-horizon
with poison reverse. By default,
split horizon with poison reverse
is enabled on all interfaces.
ip rip poison-reverse
no ip rip
poison-reverse
None