Table 43 ICMP statistics

Statistics

Description

icmpOutDestUnreachs

The number of ICMP Destination Unreachable messages sent.

icmpOutTimeExcds

The number of ICMP Time Exceeded messages sent.

icmpOutParmProbs

The number of ICMP Parameter Problem messages sent.

icmpOutSrcQuenchs

The number of ICMP Source Quench (buffer almost full, stop sending data) messages

 

sent.

icmpOutRedirects

The number of ICMP Redirect messages sent.

icmpOutEchos

The number of ICMP Echo (request) messages sent.

icmpOutEchoReps

The number of ICMP Echo Reply messages sent.

icmpOutTimestamps

The number of ICMP Timestamp (request) messages sent.

icmpOutTimestampReps

The number of ICMP Timestamp Reply messages sent.

icmpOutAddrMasks

The number of ICMP Address Mask Request messages sent.

icmpOutAddrMaskReps

The number of ICMP Address Mask Reply messages sent.

TCP statistics

The following command displays TCP statistics:

show ip tcp counters

Command mode: All except User EXEC

TCP statistics:

 

 

 

tcpRtoAlgorithm:

4

tcpRtoMin:

0

tcpRtoMax:

240000

tcpMaxConn:

512

tcpActiveOpens:

252214

tcpPassiveOpens:

7

tcpAttemptFails:

528

tcpEstabResets:

4

tcpInSegs:

756401

tcpOutSegs:

756655

tcpRetransSegs:

0

tcpInErrs:

0

tcpCurBuff:

0

tcpCurConn:

3

tcpOutRsts:

417

 

 

 

 

 

 

The following table describes the Transmission Control Protocol (TCP) statistics:

Table 44 TCP statistics

Statistics

Description

tcpRtoAlgorithm

The algorithm used to determine the timeout value used for retransmitting

 

unacknowledged octets.

tcpRtoMin

The minimum value permitted by a TCP implementation for the retransmission

 

timeout, measured in milliseconds. More refined semantics for objects of this type

 

depend upon the algorithm used to determine the retransmission timeout. In

 

particular, when the timeout algorithm is rsre(3), an object of this type has the

 

semantics of the LBOUND quantity described in Request For Comments (RFC) 793.

tcpRtoMax

The maximum value permitted by a TCP implementation for the retransmission

 

timeout, measured in milliseconds. More refined semantics for objects of this type

 

depend upon the algorithm used to determine the retransmission timeout. In

 

particular, when the timeout algorithm is rsre(3), an object of this type has the

 

semantics of the UBOUND quantity described in RFC 793.

tcpMaxConn

The limit on the total number of TCP connections the switch can support. In entities

 

where the maximum number of connections is dynamic, this object should contain

 

the value -1.

tcpActiveOpens

The number of times TCP connections have made a direct transition to the SYN-

 

SENT state from the CLOSED state.

tcpPassiveOpens

The number of times TCP connections have made a direct transition to the SYN-

 

RCVD state from the LISTEN state.

tcpAttemptFails

The number of times TCP connections have made a direct transition to the CLOSED

 

state from either the SYN-SENT state or the SYN-RCVD state, plus the number of

 

times TCP connections have made a direct transition to the LISTEN state from the

 

SYN-RCVD state.

tcpEstabResets

The number of times TCP connections have made a direct transition to the CLOSED

 

state from either the ESTABLISHED state or the CLOSE- WAIT state.

tcpInSegs

The total number of segments received, including those received in error. This count

 

includes segments received on currently established connections.

tcpOutSegs

The total number of segments sent, including those on current connections but

 

excluding those containing only retransmitted octets.

Statistics commands 50

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NEC N8406-022 manual TCP statistics, Show ip tcp counters

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.