Chapter 4 Configuring Additional Router Features

Configuration Limiting

F I N A L D R A F T — C i s c o C o n f i d e n t i a l

Number of Parallel Links (max-paths): Example

In the following example, the maximum paths command is used to set the maximum number of parallel routes:

RP/0/RSP1/CPU0:router# configure

RP/0/RSP1/CPU0:router(config)# router ospf 100

RP/0/RSP1/CPU0:router(config-router)# maximum paths 10

RP/0/RSP1/CPU0:router(config-router)# end

Uncommitted changes found, commit them? [yes]: y

RP/0/RSP1/CPU0:Mar 30 18:05:13 : config[65740]: %LIBTARCFG-6-COMMIT : Configuration committed by user 'cisco'. Use 'show configuration commit changes 1000000542' to view the changes.

RP/0/RSP1/CPU0:Mar 30 18:05:13 : config[65740]: %SYS-5-CONFIG_I : Configured from console by cisco

RP/0/RSP1/CPU0:router#

Routing Policy Language Line and Policy Limits

Two limits for Routing Policy Language (RPL) configurations exist:

1.Number of RPL lines: The number of configuration lines entered by the user, including the beginning and ending statements (that is “route-policy”). The number of configuration lines for sets is also included.

2.Number of RPL policies: The number of policies that can be configured on the router. Policies are

counted only once: Multiple use of the same policy counts as a single policy toward the limit 1.

The limits for RPL lines and policies are summarized in Table 4-7. You can change the default values up to the absolute maximum, but you cannot change the value to a number less than the number of items that are currently configured.

Table 4-7

Maximum Lines of RPL: Configuration Limits and Commands

 

 

 

 

 

 

 

 

 

Default

Absolute

 

Show Current Settings

 

 

Maximum

Maximum

Configuration Command

Command

Limit Description

Limit

Limit

(Global Configuration Mode)

(EXEC Mode)

 

 

 

 

 

Maximum number of RPL lines

65,536

131,072

rpl maximum lines n

show rpl maximum lines

 

 

 

 

 

Maximum number of RPL policies

3500

5000

rpl maximum policies n

show rpl maximum

 

 

 

 

 

policies

 

 

 

 

 

 

Examples

In the following example, the show rpl maximum command is used in EXEC mode to display the current setting for RPL limits and number of each limit currently in use. A summary of the memory used by all of the defined policies is also shown below the limit settings.

RP/0/RSP1/CPU0:router# show rpl maximum

Current

Current

Max

Total

Limit

Limit

------------------------------------------------------------

Lines of configuration

0

65536

131072

Policies

0

3500

5000

Compiled policies size (kB)

0

 

 

 

 

RP/0/RSP1/CPU0:router#

 

 

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

 

 

 

 

 

 

 

 

 

 

 

 

OL-17502-01

 

 

4-23

 

 

 

 

 

Page 98 Page 100
Page 99
Image 99
Cisco Systems ASR 9000 manual Routing Policy Language Line and Policy Limits, Number of Parallel Links max-paths Example
Page 98 Page 100

A9KMOD80TR, A9K24X10GETR, ASR 9000 specifications

Cisco Systems has long been a leader in networking technology, providing cutting-edge solutions for service providers and enterprise organizations alike. Among their standout products is the Cisco ASR 9000 Series Aggregation Services Routers, notably the A9K24X10GETR and the A9KMOD80TR models. These routers are engineered to deliver unmatched performance, scalability, and versatility for networks that require high bandwidth and low latency.

The Cisco ASR 9000 Series is built for the needs of today's complex service provider and enterprise networks. A significant feature of the A9K24X10GETR is its 24-port 10-Gigabit Ethernet module. This functionality allows for high-density connectivity, making it ideal for aggregating numerous connections to different parts of a network while maintaining optimal performance. Whether used for Internet service providers delivering high-speed connectivity or for enterprises looking to connect multiple branches, the A9K24X10GETR provides robust and reliable data transmission.

Further enhancing the capabilities of the ASR 9000 is the A9KMOD80TR module, which supports an extensive range of services. This module is designed to run a variety of technologies, including Layer 2 and Layer 3 services, MPLS (Multiprotocol Label Switching), and IPv6. Its ability to integrate seamlessly into existing infrastructures while providing the advanced features customers demand makes it an invaluable asset for network engineering teams.

Another cutting-edge technology present in the ASR 9000 Series is its support for eBGP (External Border Gateway Protocol), which plays a critical role in managing traffic across multiple networks. The routers are equipped with advanced telemetry features, empowering operators with real-time insights into network performance and health. Additionally, they come with integrated security features that protect against DDoS threats and other vulnerabilities.

In summary, Cisco's ASR 9000 Series, particularly the A9K24X10GETR and A9KMOD80TR, combines high-density connections, extensive service support, and advanced security and telemetry capabilities. These routers are perfect for demanding environments where reliable performance and adaptability are crucial. With their focus on innovation and performance, Cisco continues to shape the future of networking technology.
Top Page Image Contents