LAN, Switching and Routing

The Cisco LAN, Routing and Switching Technical Support Forum gives you access to participate in tech discussions and go through documents on Cisco LAN Switch, LAN Router, VLAN, Cisco Catalyst, Catalyst 6500, Catalyst 3550, Jabber Client, Nexus 7000, and other related issues. You can browse through latest tech topics popular among the community.

 

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I have about a dozen 3560X closet switches running IOS 15.2(1)E.  These switches are configured for DHCP snooping, DAI and port-security since goin...
3 hours 39 sec ago
Dear Member, I m trying to setup a network with few second fail-over with Cisco 3850 stack, C3850 support SSO and NSF on OSPF.However, when the Mas...
3 hours 28 min ago
in document suggest ARP timer < MAC timer. but i think there is still a problem.IF remote Host disconnect from remote switch , and remote switch...
by fly
9 hours 3 min ago
in document suggest ARP timer < MAC timer. but i think there is still a problem.IF remote Host disconnect from remote switch , and remote switch...
by fly
9 hours 36 min ago
Dear All,We are participating in a requirement shared by one of our clients. Can you please guide me as to which Switch will best meet the followin...
10 hours 28 min ago
         
IP SLA 327 3 0 0 0
Routers 2 0 0 0 0
Switches 6761 571 6 1 0
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discussion load balance
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222 0 0.0 0 cisconoobie
discussion NTP > 2.5Ms dispersal. 4506, 31% CPU load average.
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142 0 0.0 0 carl_townshend
discussion VLANs or not with 2950ST-8 LRE - IOS 121-22
Last Reply 7 years 5 months ago.
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Filter Results
Subject Views Rating Comments Author
When trying to access the NVRAM by issuing the write memory or show configuration commands, the user receives error message
Last Reply 4 years 8 months ago.
2156
4.0
0 TCC_2
User receives multiple "ciscoEnvMonTemperatureNotification" traps in Catalyst 6000/6500 series switches
Last Reply 4 years 8 months ago.
707
0.0
0 TCC_2
Supervisor 720 based Catalyst 6500 and 7600 Series Switches running Cisco IOS display the "SP: Linecard endpoint of Channel [dec] lost Sync. to Lower fabric and trying to recover now" error message
Last Reply 4 years 8 months ago.
1188
0.0
0 TCC_2
How to configure load balancing between multiple DHCP servers connected in a switched network
Last Reply 4 years 8 months ago.
2154
0.0
0 TCC_2
Power inline on 4500
Last Reply 3 years 6 months ago.
534
0.0
0 d_steffen
may be a ios bug with my cisco NX7010
Last Reply 8 months 2 weeks ago.
140
0.0
0 enter_door
CiscoWorks reports a Port HighDiscardRate message for gigabit ports on the Cisco Catalyst switches
Last Reply 4 years 8 months ago.
724
0.0
0 TCC_2
Parity errors and packet drop issues in the Catalyst 6500 switch with 7600-SIP-400 line card and Sup720 that run Cisco IOS system software
Last Reply 4 years 8 months ago.
729
0.0
0 TCC_2
Troubleshooting Tips for FPOE in 6500 Series Switches
Last Reply 2 years 5 months ago.
1910
0.0
0 kaannadu
The deletion of an ACL that is still bound to a VLAN interface results in high CPU utilzation.
Last Reply 4 years 8 months ago.
596
0.0
0 TCC_2
What's New on Cisco Catalyst 6500 Series? - Slides from live webcast
Last Reply 3 weeks 1 day ago.
277
5.0
0 rimichae
The %CSM_SLB-4-TOPOLOGY error message is received on the CSM of a Cisco Catalyst 6500 Series switch running CatOS software
Last Reply 4 years 8 months ago.
830
0.0
0 TCC_2
How to hardcode the speed of a Gigabit Interface Converter (GBIC) and Small Form-Factor Pluggable (SFP) module
Last Reply 4 years 8 months ago.
4529
0.0
0 TCC_2
The "%SCHED-3-THRASHING: Process thrashing on watched" error message and traceback errors appear in Catalyst 3750 series switches
Last Reply 4 years 8 months ago.
1861
0.0
0 TCC_2
New module inserted, it may be powered down after boot diagnostics and reports a TestLoopback error on VSS setup
Last Reply 3 years 2 months ago.
1560
5.0
0 vvasisth
The No space left on device message is displayed when a software upgrade is attempted on a Cisco Catalyst fixed configuration switch
Last Reply 4 years 8 months ago.
6274
0.0
0 TCC_2
The %This platform allows a maximum of 1 TX monitor interface(s) error message is received during SPAN configuration on a Cisco Catalyst switch
Last Reply 4 years 8 months ago.
2071
0.0
0 TCC_2
How to differentiate between the no spanning-tree portfast command and the spanning-tree portfast disable command
Last Reply 4 years 8 months ago.
3319
0.0
0 TCC_2
ACL TCAM and LOUs in Catalyst 6500
Last Reply 2 years 11 months ago.
4802
5.0
0 Yogesh Ramdoss
Module status shows unsupported module when installed in slot 10 of the Catalyst 4510R Switch chassis with Supervisor V
Last Reply 4 years 10 months ago.
895
0.0
0 SunilKhanna
Cisco Catalyst 4500/4000 series switches display the %C4K_CHASSIS-3-UNKNOWNLINECARD error message when a new line card is installed
Last Reply 4 years 8 months ago.
832
0.0
0 TCC_2
SSH fails due to missing Crypto keys in Catalyst 6500 switch with Sup720 running Cisco IOS is reloaded
Last Reply 4 years 8 months ago.
1799
0.0
0 TCC_2
VLANs
Last Reply 1 year 4 months ago.
1787
3.0
0 Sunil Khanna
How to configure source IP on a per-VLAN basis for multicast IGMP queries on a Catalyst 6500 series switch
Last Reply 4 years 8 months ago.
1175
0.0
0 TCC_2
The "%C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET:" error message appears in Catalyst 4500 series switches running Cisco IOS software
Last Reply 4 years 8 months ago.
24229
0.0
0 TCC_2
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blog What can be done about WAN packet loss and its impact on WAN application performance? - shared by Bharat Shrinevas
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blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
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blog About "TestErrorCounterMonitor" in 6500/7600
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Setup a temporary package for 1 subscriberEnable TUR RDRs for that packageAccess some content through the SCECapture the RDRs to the CSV...
LAN, Switching and Routing
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Speaker:Vinay Sharma
LAN, Switching and Routing
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In this video our Technical Experts Aninda Chatterjee & Karthick Murugan has covered following AGENDA:1) IOS upgrade2) High CPU3)...
LAN, Switching and Routing
Views: 424
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During the live event, Cisco subject matter expert Vaibhav Katkade covered the various security features available on Cisco Catalyst...
LAN, Switching and Routing
Views: 66
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Average Rating: 0 (0 ratings)
In this video our experts Manas R Moothedath & Sumit Kothiyal has covered following topics.NAT – A Practical approach1) Basic working...
LAN, Switching and Routing
Views: 123
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During the live event, Cisco subject matter experts Richard Michael and Somu Jayaraman focused on troubleshooting switching issues with the...
LAN, Switching and Routing
Views: 65
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Souvik Ghosh is a CSE at the Cisco TAC in Bangalore, India. He has 3.5 years of experience in LAN switching technologies. LAN switching...
LAN, Switching and Routing
Views: 201
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AgendaIntroduction to Catalyst 6800 Series Catalyst 6807-XL OverviewCatalyst 6800-X OverviewCatalyst 6800IA OverviewOverview of Virtual...
LAN, Switching and Routing
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In this video our Technical Experts Aninda Chatterjee & Karthick Murugan has covered following AGENDA:1) Spanning-tree features – how...
LAN, Switching and Routing
Views: 273
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In this video, we will learn on how to perform a software upgrade on VSS with Quad Supervisor using the Enhanced Fast Software Upgrade...
by vbhutta
LAN, Switching and Routing
Views: 168
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Community Tech-Talk series is designed to discuss and share insights on specific topics, selectively chosen based on most-common...
by rucjain
LAN, Switching and Routing
Views: 126
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Average Rating: 5 (3 ratings)
In this video we will see an example of how to configure InterVLAN routing on a Cisco catalyst 3550 series switch.
LAN, Switching and Routing
Views: 2437
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LAN, Switching and Routing
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Galen Guanlin Zhang is a certified, Data Center expert and Data Center Storage Networking Design Specialist with Cisco. In this video,...
LAN, Switching and Routing
Views: 293
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Average Rating: 5 (2 ratings)
Software DownloadWith Oscar BauerOscar Bauer, Cisco's Manager of Technical Support Software Downloads, takes questions on Cisco's Software...
LAN, Switching and Routing
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This Month

April 1st
Webcasts
During the live event, Cisco subject matter expert Vaibhav Katkade will cover the various security features available on Cisco Catalyst switching plat...
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March 31st
Ask the Expert
 Welcome to this Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about how to fortify your LAN...
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Events

March 11th
Ask the Expert
  Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to ask questions and learn about troubleshooting switchin...
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March 10th
Webcasts
With Richard Michael and Somu Jayaraman During the live event, Cisco subject matter experts Richard Michael and Somu Jayaraman focused on troubleshoot...
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January 6th
Ask the Expert
            With Amer Atout Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions abou...
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December 2nd, 2013
Ask the Expert
With Luke Primm, Colby Beam and Nicholas Tate  Welcome to this Cisco Support Community Ask the Expert conversation. This is an opportunity to learn an...
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October 21st, 2013
Ask the Expert
With Wilson BonillaWelcome to the Cisco Support Community Ask the Expert conversation.  This  is an opportunity to learn and ask questions about about...
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August 26th, 2013
Ask the Expert
With Anand Ganesan Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about how to...
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March 11th, 2013
Ask the Expert
With Dan SchnourWelcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions of Cisco expert...
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December 12th, 2012
Techtalks
Community Tech-Talk series is designed to bring technical  Experts from Cisco to share their insights on specific topics,  selectively chosen based on...
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October 18th, 2012
Facebook Forums
Live chat with Cisco expert Srikanth Babu on October 18, 2012Learn and ask about common symptoms, causes of Memory and high CPU related issues and how...
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October 8th, 2012
Ask the Expert
With Nickolay Karpyshev and Ivan ShirshinWelcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask q...
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July 30th, 2012
Ask the Expert
With Rahul KachaliaWelcome to the Cisco Support Community Ask the Expert conversation.This is an opportunity to learn and ask questions about the Cisc...
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July 27th, 2012
Facebook Forums
Live chat with Cisco expert, Akshay Balanagur on Catalyst 6500 Switch ArchitectureJuly 17th, 2012Cisco Catalyst 6500 is one of the most widely deploye...
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July 17th, 2012
Ask the Expert
With Akshay BalaganurWelcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn from Cisco expert Akshay Bala...
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July 16th, 2012
Ask the Expert
With Nikolay KarpyshevWelcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about arch...
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June 19th, 2012
Ask the Expert
Judhajit Ghosh Welcome to the Cisco Support Community Ask the Expert conversation. Learn from Cisco expert Judhajit Ghosh about Catalyst Security. Ju...
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May 25th, 2012
Facebook Forums
Live chat with Cisco expert, Lucien Avramov on Cisco Nexus SwitchesMay 17th, 2012 Lucien is a customer support engineer at the Cisco Technical Assist...
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May 21st, 2012
Ask the Expert
With Shashank Singh  and Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn from Cisco experts Shasha...
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March 12th, 2012
Ask the Expert
With Matt BlanshardWelcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to ask your toughest layer 2 questions t...
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January 17th, 2012
Ask the Expert
With Souvik Ghosh Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about differen...
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January 17th, 2012
Webcasts
Souvik Ghosh is a customer support engineer at the Cisco Technical Assistance Center in Bangalore, India. He has three and half years of experience in...
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October 11th, 2011
Facebook Forums
Event Date: October 20, 2011 Event Time: 9:30 pm PST. For local timezones, see http://bit.ly/nyN4yU Location: Online on our Facebook Fan Page (http:/...
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October 10th, 2011
Ask the Expert
With Peter PalúchWelcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to get expert insights and learn about U...
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August 29th, 2011
Ask the Expert
With Hatim Badr and Iqbal Syed Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn about design, confi...
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