Showing ARP Information

Chapter 4 Configuring the Address Resolution Protocol

Use the clear arp cache command to delete dynamic entries from the ARP cache. To specify an address for the single ARP entry you want to remove from the ARP cache, use the clear arp cache ip_or_host command. Enter the address in either dotted-decimal IP notation (for example, 192.168.11.1) or mnemonic host-name format (for example, myhost.mydomain.com).

For example:

#clear arp cache 192.168.11.1

Use the show arp command to display ARP information. To show static ARP mapping when you use the show arp command, the IP route must exist in the routing table.

The syntax for this global configuration mode command is:

show arp {configfilemanagement-portsummaryip_or_host}

The syntax and options for the command are as follows:

•show arp - Displays the complete ARP resolution table with IP addresses, MAC addresses, and resolution type, excluding entries from the CSS Ethernet management port.

•config - Displays ARP global configuration parameters. The screen displays the response timeout and the flush timeout, in seconds.

•file - Displays the hosts that are reachable using ARP. The screen displays the IP addresses of the host systems.

•management-port- Displays the ARP entries from the CSS Ethernet management port. The ARP resolution table displayed through the show arp command displays these entries.

Note The CSS Ethernet management port IP address appears as an entry in the Management Port ARP cache. This is normal CSS behavior.

	Cisco Content Services Switch Routing and Bridging Configuration Guide
4-6	OL-8241-02

OL-8241-02 specifications

Cisco Systems OL-8241-02 is a significant component of Cisco's extensive portfolio, catering specifically to the needs of enterprise-level networking. This module is designed to provide advanced routing capabilities, aiding organizations in achieving robust connectivity and efficient data transmission across their networks. It is particularly popular among businesses that require reliable performance and scalability.

One of the main features of the OL-8241-02 module is its support for multiple protocols, including OSPF, EIGRP, and BGP, which allows for seamless integration into various network configurations. This flexibility ensures that organizations can adapt to evolving networking demands without undergoing complete infrastructure overhauls. Furthermore, the module includes advanced security features, such as IPsec VPN support and integrated firewall capabilities, enhancing overall network security and protecting sensitive data from potential threats.

Another noteworthy characteristic of the OL-8241-02 is its exceptional performance metrics. With high throughput rates and low latency, the module can handle significant amounts of data traffic without compromising on speed. This efficiency is particularly critical for businesses that rely heavily on real-time data applications, such as video conferencing and online collaboration tools.

The OL-8241-02 also incorporates cutting-edge technologies like Quality of Service (QoS), which prioritizes network traffic based on application requirements. This feature is essential for ensuring that critical applications receive the bandwidth they need, while less critical tasks can be deprioritized during peak usage times. Additionally, the module supports IPv6, which is vital for organizations looking to future-proof their network infrastructure amid the global transition from IPv4.

The ease of management is another highlight of the OL-8241-02, with user-friendly interfaces and compatibility with Cisco's robust management software. This capability allows IT teams to monitor performance metrics, troubleshoot issues, and configure settings with minimal complexity.

In summary, the Cisco Systems OL-8241-02 module stands out for its versatility, performance, and security features. Equipped with the ability to support various protocols, advanced security measures, and efficient traffic management, it proves to be a reliable choice for enterprises aiming to enhance their networking capabilities and ensure seamless operational continuity.

Cisco Systems OL-8241-02 manual Showing ARP Information, # clear arp cache

Models: OL-8241-02

For example:

#clear arp cache 192.168.11.1