Cisco Systems 17053 appendix Autonegotiation Valid Configuration

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performance−related issues. The most common problems with NIC issues deal with speed and duplex configuration. Table 1 summarizes all possible settings of speed and duplex for FastEthernet NICs and switch ports.

Note: This section is only applicable for 10/100/1000 Mbps (1000BASE−T) NICs, and not 1000BASE−X NICs.

Table 1￿Autonegotiation Valid Configuration

Configuration

 

 

 

 

NIC

Configuration

 

Resulting

 

(Speed/Duplex)

Resulting NIC

 

Switch

Catalyst

Comments

 

 

 

(Speed/Duplex)

Speed/Duplex

Speed/Duplex

Assuming

 

 

 

 

 

 

maximum

AUTO

 

1000 Mbps,

1000 Mbps,

capability of

AUTO

Catalyst switch,

 

Full−duplex

Full−duplex

 

 

and NIC is

 

 

 

 

 

 

 

 

1000 Mbps,

 

 

 

 

full−duplex.

 

 

 

 

 

 

 

 

 

Link is

 

 

 

 

established, but

 

 

 

 

the switch does

 

 

 

 

not see any

 

 

 

 

autonegotiation

 

 

 

 

information

 

 

 

 

from NIC.

1000 Mbps,

 

 

 

Since Catalyst

 

 

 

switches

Full−duplex

 

1000 Mbps,

1000 Mbps,

AUTO

support only

 

Full−duplex

Full−duplex

 

 

full−duplex

 

 

 

 

 

 

 

 

operation with

 

 

 

 

1000 Mbps,

 

 

 

 

they default to

 

 

 

 

full−duplex,

 

 

 

 

and this

 

 

 

 

happens only

 

 

 

 

when operating

 

 

 

 

at 1000 Mbps.

 

 

 

 

 

 

 

 

 

Assuming

 

 

 

 

maximum

AUTO

1000 Mbps,

1000 Mbps,

1000 Mbps,

capability of

 

Full−duplex

Full−duplex

Full−duplex

NIC is 1000

 

 

 

 

Mbps,

 

 

 

 

full−duplex.

 

 

 

 

 

1000 Mbps,

 

 

 

 

Full−duplex

1000 Mbps,

1000 Mbps,

1000 Mbps,

Correct Manual

 

 

 

 

 

100 Mbps,

Full−duplex

Full−duplex

Full−duplex

Configuration

 

 

 

Neither side

Full−duplex

1000 Mbps,

No Link

No Link

establishes link,

 

Full−duplex

due to speed

 

 

 

 

 

 

 

mismatch

 

 

 

 

 

 

AUTO

 

 

 

 

 

 

 

 

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Contents Requirements IntroductionPrerequisites Document IDBackground Information General Troubleshooting for 10/100/1000 Mbps NICsAutonegotiation Valid Configuration Correct Configuration2Duplex Mismatch∙ show port modDport Verifying Physical Connection and LinkVerifying Switch Port Configuration Maintaining Link Link Up/Down Situations∙ show interfaces type Understanding Data Link Errors ∙ Adjust switch jitter tolerancePerformance Notes FCS Explanation of CatOS show port Command CountersPossible Causes for Incrementing CatOS Counters Explanation of CatOS show mac Command Counters Sniffer Trace Gigabit Autonegotiation No Link to Connected Device Additional Troubleshooting for 1000BASE−X NICsGigabit Autonegotiation Configuration Table Teaming of Network Interface CardsCatalyst 8510 and 8540 CSR Catalyst 6000 and 6500 SwitchesSet port enable Catalyst 5000 and 5500 SwitchesCatalyst 4000, 2948G, and 2980G Switches Day to once a month. This issue can Catalyst 2950 and 3550 Switches NIC NIC Compatibility and Operation IssuesPage LnkChk to enable. 33921641.2241835 Manager Panel SystemHardware DevicePage R2BE/RBE/CBE Physical Interface PHY Control Register Programmable Options Appendix B Understanding How Autonegotiation Works= loopback mode switched on Related Information Networking Professionals Connection Featured Conversations

17053 specifications

Cisco Systems 17053 is a robust and versatile networking solution designed to meet the demands of modern data centers and enterprise environments. This device is part of Cisco's comprehensive portfolio of networking products, offering high performance, reliability, and scalability to help organizations enhance their connectivity and operational efficiency.

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Additionally, the Cisco 17053 supports various access technologies, including Ethernet and fiber connections, which provide flexibility in deployment. The device is designed to accommodate different network topologies, making it suitable for both small businesses and large enterprises.

Lastly, Cisco offers comprehensive support and services for the 17053, including training resources, technical support, and regular software updates. This dedication to customer service ensures that organizations can maximize their investment and stay ahead in an ever-evolving technological landscape.

In conclusion, the Cisco Systems 17053 is a feature-rich networking solution that combines advanced routing protocols, robust security measures, and exceptional scalability. With its ability to enhance network performance and offer comprehensive support, it stands out as a reliable choice for organizations looking to optimize their networking capabilities.