Layer 3 statistics

The following table describes basic Layer 3 statistics commands. The following sections provide more detailed information and commands. Layer 3 functionality is limited in this release.

Table 39 Layer 3 Statistics commands

Command

Usage

show ip counters

Displays IP statistics.

 

Command mode: All except UserEXEC

clear ip counters

Clears IP statistics. Use this command with caution as it deletes

 

all the IP statistics.

 

Command mode: All except UserEXEC

show ip arp counters

Displays Address Resolution Protocol (ARP) statistics.

 

Command mode: All except UserEXEC

show ip dns counters

Displays Domain Name System (DNS) statistics.

 

Command mode: All except UserEXEC

show ip icmp counters

Displays ICMP statistics.

 

Command mode: All except UserEXEC

show ip tcp counters

Displays Transmission Control Protocol (TCP) statistics.

 

Command mode: All except UserEXEC

show ip udp counters

Displays User Datagram Protocol (UDP) statistics. Add the

 

argument, clear, to clear UDP statistics.

 

Command mode: All except UserEXEC

show ip igmp counters

Displays IGMP statistics.

 

Command mode: All except UserEXEC

clear ip igmp [<1-4095>] counters

Clears all IGMP statistics for the selected VLANs.

 

Command mode: All above Priv EXEC

show layer3 counters

Displays all Layer 3 statistics.

 

Command mode: All except UserEXEC

IP statistics

The following command displays IP statistics: show ip counters

Command mode: All except User EXEC

IP statistics:

 

ipInReceives: 36475

ipInHdrErrors: 0

ipInAddrErrors: 905

 

ipInUnknownProtos: 0

ipInDiscards: 0

ipInDelivers: 4103

ipOutRequests: 30974

ipOutDiscards: 0

 

ipDefaultTTL: 255

 

The following table describes the IP statistics:

Table 40 IP statistics

Statistics

Description

ipInReceives

The total number of input datagrams received from interfaces, including those

 

received in error.

ipInHdrErrors

The number of input datagrams discarded due to errors in their IP headers, including

 

bad checksums, version number mismatch, other format errors, time-to-live exceeded,

 

errors discovered in processing their IP options, and so on.

ipInAddrErrors

The number of input datagrams discarded because the IP address in their IP header

 

destination field was not a valid address to be received at this switch. This count

 

includes invalid addresses (for example, 0.0.0.0) and addresses of unsupported

 

classes (for example, Class E).

 

For entities which are not IP gateways and therefore do not forward datagrams, this

 

counter includes datagrams discarded because the destination address was not a

 

local address.

ipInUnknownProtos

The number of locally addressed datagrams received successfully but discarded

 

because of an unknown or unsupported protocol.

Statistics commands 47

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NEC N8406-022 manual Layer 3 statistics, IP statistics

N8406-022 specifications

The NEC N8406-022 is a robust and versatile networking device designed primarily for organizations requiring high-performance connectivity solutions. As part of NEC's extensive portfolio of networking equipment, the N8406-022 is engineered to address the demands of modern enterprise environments, ensuring seamless communication and data processing capabilities.

One of the key features of the N8406-022 is its multi-layer switching functionality. This device supports Layer 2 and Layer 3 switching, allowing for efficient data routing and reducing latency within local area networks (LANs). This capability is particularly beneficial for businesses that rely on real-time data access and transfer, such as those in financial services, media, and telecommunications.

The N8406-022 is equipped with advanced Quality of Service (QoS) features that help prioritize critical network traffic. This means that voice and video data packets can be given precedence over less time-sensitive information, ensuring that essential communication remains clear and uninterrupted. This is crucial for organizations leveraging VoIP and video conferencing solutions.

In terms of connectivity, the NEC N8406-022 offers a variety of ports, including multiple Gigabit Ethernet ports, which facilitate high-speed data transfer and enable seamless integration into existing network infrastructures. The device may also include 10 Gigabit SFP+ ports, providing the flexibility for high-capacity uplinks to support bandwidth-intensive applications and storage solutions.

Security is another focal point of the NEC N8406-022, with integrated features such as VLAN support, access control lists (ACLs), and port security measures. These capabilities protect sensitive data from unauthorized access and ensure that only legitimate users and devices can connect to the network.

Moreover, the N8406-022 often incorporates advanced energy-efficient technologies that minimize power consumption without compromising performance. This not only contributes to operational cost savings but also supports organizations in their sustainability efforts.

With its combination of performance, security, and energy efficiency, the NEC N8406-022 stands out as a reliable networking solution suitable for a wide range of enterprises looking to enhance their connectivity and operational efficiency. Whether deployed in data centers or as part of a corporate network, this device is built to meet the evolving demands of today’s digital landscape.