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.

 

Provide answers to questions in this community that are awaiting a correct answer.

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...
2 hours 55 min 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 22 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
8 hours 58 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 31 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 22 min ago
         
IP SLA 327 3 0 0 0
Routers 2 0 0 0 0
Switches 6761 571 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion IOS recommendation for 3750X
Last Reply 43 sec ago.
0 0 0.0 3 JosephDoherty
discussion Physical position of backup Cisco 3560 switch in relation to other produciton switches
Last Reply 1 hour 10 min ago.
0 0 0.0 2 JosephDoherty
discussion Mismatched MTU on Trunk Link
Last Reply 1 hour 24 min ago.
18 0 0.0 3 JosephDoherty
discussion Global ACL does not activate
Last Reply 1 hour 29 min ago.
6 0 0.0 1 Renan Abreu
discussion Crossover Cisco 3550 with 3548?
Last Reply 1 hour 33 min ago.
0 0 0.0 1 Renan Abreu
discussion troubleshooting Dynamic Arp Inspection - port security excessive port shutdowns
Last Reply 2 hours 59 min ago.
0 0 0.0 0 darthnul
discussion Cisco 3850 SSO and NSF failover time
Last Reply 3 hours 26 min ago.
1 0 0.0 0 russkwong
discussion Cisco 3750 Stacking with different IOS Image
Last Reply 4 hours 24 min ago.
19 0 0.0 4 JosephDoherty
discussion Replace 3750x switches with equivalent fibre models
Last Reply 4 hours 57 min ago.
21 0 0.0 2 JosephDoherty
discussion Cisco 3750 Stacking with different IOS Image
Last Reply 5 hours 12 min ago.
5 0 0.0 1 JosephDoherty
discussion Cisco 3750 Stacking with different IOS Image
Last Reply 5 hours 14 min ago.
8 0 0.0 2 JosephDoherty
discussion QOS Setup
Last Reply 5 hours 25 min ago.
17 0 5.0 2 JosephDoherty
discussion connect 2 switch with fiber
Last Reply 5 hours 30 min ago.
21 0 5.0 3 JosephDoherty
discussion Avoid Sending DNS Queries, etc... for Non-Routable Addresses to Internet
Last Reply 5 hours 46 min ago.
42 0 0.0 2 snowmizer
discussion Live IPs in particular VLAN
Last Reply 8 hours 6 min ago.
27 0 0.0 3 Mohit
discussion Two VLANs, same Subnet, no IP Routing; Communication dilemma
Last Reply 8 hours 26 min ago.
39 0 0.0 2 mvsheik123
discussion Help!! How to quit service-module session?
Last Reply 8 hours 35 min ago.
3536 0 5.0 4 wass.aouadi
discussion OTV ARP timer issue?
Last Reply 9 hours 2 min ago.
6 0 0.0 0 fly
discussion EIGRP Authentication
Last Reply 9 hours 17 min ago.
52 0 5.0 4 isoffice1
discussion OTV ARP timer issue?
Last Reply 9 hours 35 min ago.
1 0 0.0 0 fly
discussion Link stay down in a 3850 withe the Modul c3850-NM-4-10G and the 1000BaseZX SFP
Last Reply 9 hours 50 min ago.
3 0 0.0 1 efranke@avodaq.com
discussion Trunk port as a destination for SPAN session
Last Reply 9 hours 55 min ago.
20 0 0.0 3 Poonam Garg
discussion Cisco Switch - Advice Required
Last Reply 10 hours 26 min ago.
13 0 0.0 0 farhan_ali
discussion WCCP Redirection to WSA in 3750 Switch
Last Reply 11 hours 29 min ago.
413 1 0.0 3 c-balduck
discussion GRE Tunnel with router behind Nat router
Last Reply 11 hours 47 min ago.
3 0 0.0 0 Ahmed Alzaeem
Filter Results
Subject Views Rating Comments Author
software, hardware and Licensing requirement for 4500 VSS
Last Reply 7 min 4 sec ago.
0
0.0
0 fumohamm
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 1 day 2 hours ago.
264860
5.0
28 plumbis
Recovering from ErrDisabled port due to misconfiguration
Last Reply 1 day 23 hours ago.
14400
0.0
0 TCC_2
Fortify Your LAN with Cisco Catalyst Switching - Slides from live webcast
Last Reply 1 week 18 hours ago.
122
0.0
0 ciscomoderator
Fortify Your LAN with Cisco Catalyst Switching - FAQ from live webcast
Last Reply 1 week 18 hours ago.
39
0.0
0 Anim Saxena
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - Slides from live webcast
Last Reply 1 week 1 day ago.
496
5.0
2 ciscomoderator
How to Upgrade Cisco 4500 SUP7-E & Sup7L-E ROMMON To support VSS
Last Reply 1 week 4 days ago.
14319
5.0
0 ashirkar
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 week 4 days ago.
56378
4.6
25 ashirkar
Q&A from Troubleshooting and Upgradation on Cisco LAN switches Session 1
Last Reply 2 weeks 7 hours ago.
496
0.0
0 ashirkar
What is the difference between an IP base image and an IP services image
Last Reply 2 weeks 3 days ago.
136991
5.0
9 tahirshabbir
4500 Wireshark quick setup guide
Last Reply 2 weeks 4 days ago.
9042
5.0
2 demclaug
Duplicate ping replies from servers using HSRP virtual address as gateway
Last Reply 2 weeks 4 days ago.
136
0.0
1 tmikelson
What’s New on Cisco Catalyst 6500 Series? - FAQ from Live Webcast
Last Reply 3 weeks 1 day ago.
59
0.0
0 ashirkar
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 user receives the "%ETHCNTR-3-LOOP_BACK_DETECTED" error message on a Cisco Catalyst switch that runs Cisco IOS® Software
Last Reply 3 weeks 2 days ago.
20736
5.0
1 TCC_2
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 3 weeks 4 days ago.
28002
5.0
9 SunilKhanna
Chalk Talk: The Secret to Successful QoS Deployments
Last Reply 3 weeks 5 days ago.
881
0.0
0 szigeti
Port Security and Tandberg device
Last Reply 3 weeks 6 days ago.
251
0.0
1 oraja
How to use Time-Domain Reflectometer (TDR)
Last Reply 4 weeks 1 day ago.
44237
5.0
62 Leo Laohoo
Recovering from a 3850 boot failure.
Last Reply 1 month 1 week ago.
2314
3.7
2 Luke Primm
Upgrade software on a Cisco 3850 switch
Last Reply 1 month 1 week ago.
8310
0.0
4 Luke Primm
Using the Auto-Upgrade feature on the cisco Catalyst 3850
Last Reply 1 month 1 week ago.
463
0.0
1 Luke Primm
CCP installation on Windows 8 & 8.1 with IE 11 x64
Last Reply 1 month 1 week ago.
127
0.0
0 jportugu
Help:C4900M WS-X4908-10G-RJ45 interface shutdown/no shutdown need to how long to wait?
Last Reply 1 month 2 weeks ago.
53
0.0
7 gggggqqqqq
Understanding “Input Discard” Interface Counter in Nexus3000
Last Reply 1 month 2 weeks ago.
8667
5.0
0 Yogesh Ramdoss
Filter Results
Subject Views Rating Comments Author
blog What can be done about WAN packet loss and its impact on WAN application performance? - shared by Bharat Shrinevas
Last Reply 4 days 2 hours ago.
10
0.0
0 bshrinev
blog What can L2TP do for your network? - Network World - shared by Rachana Pandey
Last Reply 1 week 2 days ago.
2
0.0
0 racpande
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 week 2 days ago.
905
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 week 2 days ago.
681
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 week 3 days ago.
3
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 1 week 5 days ago.
17442
5.0
0 shashasi
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 2 weeks 3 days ago.
7219
5.0
9 rucjain
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 2 weeks 6 days ago.
27
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 3 weeks 6 days ago.
1677
5.0
3 ag2
blog Configuring a frame-relay switch
Last Reply 1 month 1 day ago.
4726
5.0
6 aninchat
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 4 months 1 week ago.
663
0.0
1 ramugaju
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 6 months 3 days ago.
16880
4.6
11 jakula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 8 months 12 hours ago.
1231
4.7
1 ag2
blog How to build the topology of an OSPF area
Last Reply 8 months 3 days ago.
1764
5.0
4 aninchat
blog Parity Error.
Last Reply 8 months 3 weeks ago.
1968
4.5
4 insharie
blog Nexus 7000 ACL logging (OAL)
Last Reply 9 months 1 week ago.
12183
0.0
7 Robert Taylor
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 1 year 2 months ago.
6615
5.0
6 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 1 year 4 months ago.
3237
4.8
1 aninchat
blog Router Crashes
Last Reply 1 year 6 months ago.
5576
5.0
1 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 8 months ago.
21237
5.0
3 aninchat
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 1 year 9 months ago.
8318
5.0
7 pnagpal
blog Important Nexus 7000 NX-OS Software Update
Last Reply 1 year 10 months ago.
4018
5.0
0 ctripoli
blog New Cisco 5915 ESR
Last Reply 1 year 11 months ago.
4109
5.0
2 sonasing
blog Moving Beyond the Internet of Things in 2012
Last Reply 2 years 2 months ago.
1699
5.0
0 mmorrow
blog Troubleshooting L2 issues - ARP Poisoning
Last Reply 2 years 2 months ago.
4115
0.0
4 rparames
Filter Results
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
Views: 8
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Average Rating: 0 (0 ratings)
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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Average Rating: 0 (0 ratings)
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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Average Rating: 0 (0 ratings)
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
Views: 140
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Average Rating: 5 (1 ratings)
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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Average Rating: 0 (0 ratings)
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
Views: 153
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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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