Cisco Systems 1400 series, 1600R manual Show ip ospf sham-links, Defaults, Usage Guidelines

Page 15

OSPF Sham-Link Support for MPLS VPN

show ip ospf sham-links

show ip ospf sham-links

To display information about all sham-links configured for a provider edge (PE) router in the Virtual Private Network (VPN) backbone, use the show ip ospf sham-linkscommand in EXEC mode.

show ip ospf sham-links

Syntax Description This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

Command History

EXEC

ReleaseModification

12.2(8)T

This command was introduced.

 

 

Usage Guidelines

Use this command to display Open Shortest Path First (OSPF) information about the sham-links

 

configured on a PE router.

 

The following example shows sample output from the show ip ospf sham-linkscommand for a PE

Examples

 

router in the VPN backbone:

 

Router1# show ip ospf sham-links

 

Sham Link OSPF_SL0 to address 10.44.0.1 is up

 

Area 120 source address 10.0.0.1

 

Run as demand circuit

 

DoNotAge LSA allowed., Cost of using 1

 

Transmit Delay is 1 sec, State POINT_TO_POINT,

 

Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

Hello due in 00:00:09

 

Adjacency State FULL (Hello suppressed)

 

Index 2/2, retransmission queue length 0, number

of retransmission 27

First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)

 

Last retransmission scan length is 0, maximum is

2

Last retransmission scan time is 0 msec, maximum

is 0 msec

Cisco IOS Release 12.2(8)T

15

Image 15
Contents Feature Overview Using Ospf in PE-CE Router ConnectionsFeature History ReleaseModification Using a Sham-Link to Correct Ospf Backdoor Routing From 0.0.0.0 PE-1#show ip bgp vpnv4 allPE-1#show ip route vrf ospf Sham-Link Configuration Example Vpnv4 all tag begin Sham-Link ExampleFlexible Routing in an Mpls VPN Configuration BenefitsClient Site Connection Across the Mpls VPN Backbone Related Documents Related Features and TechnologiesSupported Platforms RestrictionsDetermining Platform Support Through Cisco Feature Navigator Creating a Sham-Link Configuration TasksSupported Standards, MIBs, and RFCs PrerequisitesVerifying Sham-Link Creation Command PurposeShow ip ospf sham-links Configuration ExamplesCommand Reference Monitoring and Maintaining a Sham-LinkArea sham-link cost Command Modes Command History120 ExamplesRouter1# show ip ospf sham-links DefaultsShow ip ospf sham-links Usage GuidelinesGlossary
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1600R, 1600, 1400 series specifications

Cisco Systems 1600 series routers are well-regarded in the networking industry for their reliability, versatility, and performance. Designed to meet the needs of small to medium-sized businesses, the Cisco 1600 series is primarily oriented towards providing robust connectivity for branch offices and remote sites.

One of the most significant features of the Cisco 1600 series is its modular architecture. This allows users to customize their routers with various interface cards, enabling support for different types of WAN technologies, including serial, ISDN, and Frame Relay. The modular design not only enhances flexibility but also extends the lifespan of the equipment, as businesses can upgrade their capacity and functionalities according to evolving demands.

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Security is also a crucial aspect of the Cisco 1600 series. Incorporating features such as access control lists (ACLs) and support for Virtual Private Networks (VPNs), these routers help businesses safeguard their sensitive data during transmission. Enhanced security features allow companies to implement secure remote access for employees, thereby maintaining productivity without compromising safety.

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The Cisco 1600 series routers are also equipped with user-friendly interfaces and management tools. Cisco's IOS software platform provides a command-line interface (CLI) and web-based graphical interface for straightforward configuration and monitoring. This simplifies network management tasks and reduces the learning curve for IT personnel.

In summary, the Cisco Systems 1600 series routers offer a significant combination of modularity, robust routing protocols, enhanced security measures, Quality of Service features, and user-friendly management options. These characteristics make them an excellent choice for small to medium-sized enterprises looking to establish a reliable and secure networking infrastructure. With the continued evolution of networking technologies, the Cisco 1600 series stands as a dependable solution for businesses navigating an increasingly complex digital landscape.