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.

Hi everyone,We've recently received a new SG500 switch at our place and I try to configure different VLANs.With some readings I've figured that I'v...
by Louis
5 hours 32 min ago
Hello all, what is the best command to verify multicast is running for a specific host? We have a new Ghost server that I'm currently testing...I h...
6 hours 27 min ago
While our security person was running scans we noticed millions of events looking for non-routable IPs being sent to the Internet from our ASA. I k...
6 hours 41 min ago
 Hi  I work as a Network Admin in a big company. Lately we noticed an issue with our network infrastructure. Basically our network have two switch...
7 hours 22 min ago
Hi I have a 2801 router connected to a 2950 switch, the f0/0 interface on the router is configured with 3 sub-interface  f0/0.10, f0/0.20, f0/0.30...
8 hours 40 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 How do I set up multiple VLANs on a single switch?
Last Reply 1 min 46 sec ago.
12 0 0.0 2 dellpe741
discussion EIGRP Authentication
Last Reply 2 hours 3 min ago.
35 0 0.0 1 harryraju
discussion Nexus 5548up connection issue (Hosts can ping but can't ssh)
Last Reply 2 hours 7 min ago.
30 0 0.0 9 Reza Sharifi
discussion Avoid Sending DNS Queries, etc... for Non-Routable Addresses to Internet
Last Reply 2 hours 51 min ago.
21 0 0.0 0 snowmizer
discussion Telnet/SSH Connection to Switch
Last Reply 4 hours 1 min ago.
104 0 0.0 6 Woodland73
discussion Mismatched MTU on Trunk Link
Last Reply 4 hours 13 min ago.
9 0 0.0 1 Reza Sharifi
discussion show ip mroute count interpertation
Last Reply 4 hours 16 min ago.
21 0 0.0 1 Jon Marshall
discussion 7206VXR CF memory - won't format?!?
Last Reply 4 hours 34 min ago.
10 0 0.0 3 Reza Sharifi
discussion Migrating from Catalyst 6513 to 4507
Last Reply 5 hours 16 min ago.
9 0 0.0 1 Reza Sharifi
discussion no switch health or port utilization info displayed c2960-24tt device manager
Last Reply 5 hours 26 min ago.
8 0 0.0 1 Leo Laohoo
discussion Cisco SG500 in layer 3 mode - interVLANS
Last Reply 5 hours 32 min ago.
2 0 0.0 0 Louis
discussion How to verify if Multicast is working for specfic host
Last Reply 6 hours 27 min ago.
5 0 0.0 0 dan hale
discussion Switch Floods Packets that should be Unicast !!!
Last Reply 7 hours 22 min ago.
8 0 0.0 0 mohamedlouhab
discussion 3750X-48PF-E USB Console Does Not Work
Last Reply 7 hours 45 min ago.
12 0 0.0 2 FratianiD
discussion Multicast PIM RP config
Last Reply 7 hours 48 min ago.
8 0 0.0 1 Bilal Nawaz
discussion load balancing over 3 dsl lines
Last Reply 8 hours 40 min ago.
10 0 0.0 0 robertokippins
discussion 4500E, CBAC & Reflexive ACL's?
Last Reply 9 hours 9 min ago.
4 0 0.0 0 robertsig
discussion PING but not traceroute!
Last Reply 9 hours 50 min ago.
29 0 0.0 3 bfcotrim@2013
discussion connect 2 switch with fiber
Last Reply 10 hours 15 min ago.
9 0 0.0 1 JosephDoherty
discussion Trunk port as a destination for SPAN session
Last Reply 10 hours 35 min ago.
9 0 0.0 1 rnoonan01
discussion HELP - Licence Error on 4500x VSS
Last Reply 12 hours 19 sec ago.
47 1 0.0 2 ross.phillips
discussion Link stay down in a 3850 withe the Modul c3850-NM-4-10G and the 1000BaseZX SFP
Last Reply 12 hours 32 min ago.
0 0 0.0 0 efranke@avodaq.com
discussion Route back into same segment request came from?
Last Reply 12 hours 39 min ago.
30 0 0.0 3 dominic.caron
discussion Traffic prioritisation on trunked switch port
Last Reply 13 hours 21 min ago.
12 0 0.0 1 nkarthikeyan
discussion GLC-FE-100LX-RGD in ie3000-8TC
Last Reply 14 hours 33 min ago.
23 0 0.0 2 udv@asva.ru
Filter Results
Subject Views Rating Comments Author
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 6 hours 3 min ago.
264801
5.0
28 plumbis
Recovering from ErrDisabled port due to misconfiguration
Last Reply 1 day 2 hours ago.
14385
0.0
0 TCC_2
Fortify Your LAN with Cisco Catalyst Switching - Slides from live webcast
Last Reply 6 days 22 hours ago.
115
0.0
0 ciscomoderator
Fortify Your LAN with Cisco Catalyst Switching - FAQ from live webcast
Last Reply 6 days 22 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.
492
5.0
2 ciscomoderator
How to Upgrade Cisco 4500 SUP7-E & Sup7L-E ROMMON To support VSS
Last Reply 1 week 3 days ago.
14289
5.0
0 ashirkar
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 week 3 days ago.
56294
4.6
25 ashirkar
Q&A from Troubleshooting and Upgradation on Cisco LAN switches Session 1
Last Reply 1 week 6 days ago.
496
0.0
0 ashirkar
What is the difference between an IP base image and an IP services image
Last Reply 2 weeks 2 days ago.
136912
5.0
9 tahirshabbir
4500 Wireshark quick setup guide
Last Reply 2 weeks 3 days ago.
9040
5.0
2 demclaug
Duplicate ping replies from servers using HSRP virtual address as gateway
Last Reply 2 weeks 4 days ago.
135
0.0
1 tmikelson
What’s New on Cisco Catalyst 6500 Series? - FAQ from Live Webcast
Last Reply 3 weeks 17 hours ago.
57
0.0
0 ashirkar
What's New on Cisco Catalyst 6500 Series? - Slides from live webcast
Last Reply 3 weeks 17 hours 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 1 day ago.
20713
5.0
1 TCC_2
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 3 weeks 3 days ago.
27970
5.0
9 SunilKhanna
Chalk Talk: The Secret to Successful QoS Deployments
Last Reply 3 weeks 5 days ago.
878
0.0
0 szigeti
Port Security and Tandberg device
Last Reply 3 weeks 5 days ago.
251
0.0
1 oraja
How to use Time-Domain Reflectometer (TDR)
Last Reply 4 weeks 18 hours ago.
44190
5.0
62 Leo Laohoo
Recovering from a 3850 boot failure.
Last Reply 1 month 6 days ago.
2311
3.7
2 Luke Primm
Upgrade software on a Cisco 3850 switch
Last Reply 1 month 6 days ago.
8288
0.0
4 Luke Primm
Using the Auto-Upgrade feature on the cisco Catalyst 3850
Last Reply 1 month 1 week ago.
462
0.0
1 Luke Primm
CCP installation on Windows 8 & 8.1 with IE 11 x64
Last Reply 1 month 1 week ago.
122
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.
8661
5.0
0 Yogesh Ramdoss
Is my HSRP,interface track config correct?
Last Reply 1 month 2 weeks ago.
1112
0.0
2 CSCO10993123
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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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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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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