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Which program to login to cisco 2950 switch how to#
Which program to login to cisco 2950 switch manual#
Which program to login to cisco 2950 switch software#

For Cisco IOS Software−based switches, these messages appear for link up/down situations: %LINK−3−UPDOWN: Interface interface, changed state to up %LINK−3−UPDOWN: Interface interface, changed state to down This is an example: %LINK−3−UPDOWN: Interface FastEthernet0/1, changed state to up %LINK−3−UPDOWN: Interface FastEthernet0/1, changed state to down In order to resolve thĬollisions are normal.

This is an example: %PAGP−5−PORTFROMSTP:Port 3/3 left bridge port 3/3 %PAGP−5−PORTTOSTP:Port 3/3 joined bridge port 3/3 Set speed and duplex of both the NIC and switch at 10 Mbps, full−duplex. Complete these steps in order to troubleshoot physical connectivity: 1.

show interfaces type Switch# show interfaces fastethernet 0/1 FastEthernet0/1 is down, line protocol is down States other than connected and line protocol is up indicate a physical connectivity issue.

In order to troubleshoot this issue,Įxample for Cisco IOS Software on the Switch − Catalyst 2900XL, 3500XL, 2948G−元, and 6000 that Run Cisco IOS Software Symptoms include poor port performance and frame check sequence (FCS) errors that increment on the switchport. This causes duplex inconsistency between the switchport and the NIC.

This is because NIC autonegotiation link detection still operates when the NIC is manually configured.

Table 1Autonegotiation Valid Configuration Configuration NIC Configuration Resulting (Speed/Duplex) Resulting NIC Switch Catalyst Comments Speed/Duplex (Speed/Duplex) Speed/Duplex Assuġ00 Mbps, 100 Mbps, 100 Mbps, Duplex 1 Full−duplex Full−duplex Half−duplex Mismatch AUTO 100 Mbps, 100 Mbps, 100 Mbps, Duplex 1 Full−duplex Half−duplex Full−duplex Mismatch 100 Mbps, Correct Full−duplex 100 Mbps, 100 Mbps, 100 Mbps, Manual Full−duplex Full−duplex Full−duplex 2 Configuration Link is established, but switch does not see any 100 Mbps, autonegotiation Half−duplex 100 Mbps, 100 Mbps, AUTO information Half−duplex Half−duplex from NIC and defaults to half−duplex when operating at 10/Ģ Some third−party NIC cards can fall back to half−duplex operation mode, even though both the switchport and NIC configuration are manually configured for 100 Mbps, full−duplex. Note: This section is only applicable for 10/100/1000 Mbps (1000BASE−T) NICs, and not 1000BASE−X NICs. Table 1 summarizes all possible settings of speed and duplex for FastEthernet NICs and switch ports. The most common problems with NIC issues deal with speed and duplex configuration.

Common Catalyst Switch Software Issues.

Background Information Purpose This document discusses how to troubleshoot these issues: Conventions Refer to Cisco Technical Tips Conventions for more information on document conventions. Troubleshooting Cisco Catalyst Switches to NIC Compatibility Issues Document ID: 17053 Introduction Prerequisites Requirements Components Used Conventions Background Information Purpose Why Do Autonegotiation and Compatibility Issues Exist? General Troubleshooting for 10/100/1000 Mbps NICs Autonegotiation Valid Configuration Table EtherChannel and Trunking Between Catalyst Switches and NICs Verifying Physical Connection and Link Verifying SwiĬomponents Used This document is not restricted to specific software and hardware versions.

Which program to login to cisco 2950 switch software#

Which program to login to cisco 2950 switch manual#

Which program to login to cisco 2950 switch how to#