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 all,i thought that OM3 is a multimode standard, recently a cable guy told me that they have laid OM3 single mode, i asked him that OM3 is a mult...
19 min 29 sec ago
Hi all,I have a cisco asa with 2 interfaces where first interface has an ip 1.1.1.1 and it points to ntp server 1.1.1.2 for time synchronisation.nt...
by don li
42 min 35 sec ago
My nexus 5K switch was logged this alert. Tried to google or search in cisco.com. But not much information can be found....
1 hour 39 min ago
Hi All.It is known that SUP720-3B on Cisco 76xx doesn't support ip flow egress on interfaces.In the last IOS in cisco feature navigator versions I...
8 hours 24 min ago
Hi All.I configured Flexible Netflow on my Cisco ASR 1002-X with IOS XE asr1002x-universal.03.11.00.S.154-1.S-std.SPA.Netflow configured for collec...
8 hours 37 min ago
         
IP SLA 327 3 0 0 0
Routers 2 0 0 0 0
Switches 6760 571 6 1 0
Filter Results
Subject Views Votes Rating Repliessort descending Last replied by
discussion load balance
Last Reply 7 years 6 months ago.
180 0 0.0 0 carl_townshend
discussion netflow v9 packet.
Last Reply 7 years 6 months ago.
129 0 0.0 0 m.matteson
discussion what is exactly the receive/trasmit ring?
Last Reply 7 years 6 months ago.
150 0 0.0 0 jorgeangelalvar...
discussion 2940's go offline after multicast session
Last Reply 7 years 6 months ago.
114 0 0.0 0 jlhainy
discussion TAGGING DSL LINE
Last Reply 7 years 6 months ago.
99 0 0.0 0 carl_townshend
discussion question about tuning hsrp and spanning-tree
Last Reply 7 years 6 months ago.
141 0 0.0 0 jenseike
discussion Per Packet Load balancing with Sup720s
Last Reply 7 years 6 months ago.
99 0 0.0 0 rfox1
discussion 6509 sup1a and flash card
Last Reply 7 years 6 months ago.
105 0 0.0 0 ciscoforum
discussion PBX Mgmt Application Uses TCP Port 60000
Last Reply 7 years 6 months ago.
218 0 0.0 0 hopital_montfort
discussion Documentation on rapvid PVST+
Last Reply 7 years 6 months ago.
124 0 0.0 0 mmallory
discussion Cisco Secure ACS and ISDN Router
Last Reply 7 years 6 months ago.
122 0 0.0 0 kingging
discussion interm. port hang up's on Cat 4948
Last Reply 7 years 6 months ago.
116 0 0.0 0 rcunz
discussion Mail Flow Issue - SMTP Traffic through IPSec Tunnel
Last Reply 7 years 6 months ago.
129 0 0.0 0 nagesh@cisco
discussion 3m stacking cable not working on 3750's
Last Reply 7 years 6 months ago.
433 0 0.0 0 pstuder
discussion 3750G Stack & Etherchannels
Last Reply 7 years 6 months ago.
222 0 0.0 0 cisconoobie
discussion NTP > 2.5Ms dispersal. 4506, 31% CPU load average.
Last Reply 7 years 6 months ago.
222 0 0.0 0 bruce.porter@lm...
discussion broadvasts
Last Reply 7 years 6 months ago.
105 0 0.0 0 carl_townshend
discussion MPLS VRF
Last Reply 7 years 6 months ago.
108 0 0.0 0 carl_townshend
discussion PIX, ARP and Microsoft NLB cluster
Last Reply 7 years 6 months ago.
205 0 0.0 0 CyberDjinn
discussion Advanced EIGRP redistribution and filtering
Last Reply 7 years 6 months ago.
131 0 0.0 0 cachaves
discussion setting up windows authentication group
Last Reply 7 years 6 months ago.
142 0 0.0 0 carl_townshend
discussion VLANs or not with 2950ST-8 LRE - IOS 121-22
Last Reply 7 years 6 months ago.
106 0 0.0 0 seclabs06
discussion Problem while capturing Data in SNORT
Last Reply 7 years 6 months ago.
130 0 0.0 0 pillairamesh
discussion Layer 2 vlan bleeding
Last Reply 7 years 6 months ago.
194 0 0.0 0 jkrawczyk
discussion cisco works 2000 for linux
Last Reply 7 years 5 months ago.
118 0 0.0 0 manoj.jain
Filter Results
Subject Views Rating Comments Author
Why does an ACL applied in an outbound direction on a VLAN effect traffic that goes across the Nexus 7000 vPC peer-link in the same VLAN?
Last Reply 1 year 9 months ago.
1099
0.0
0 demclaug
%SYS-4-P2_WARN: 1/Invalid traffic from multicast source address message is displayed on a Catalyst switch due to the switch receiving packets with a multicast MAC address as the source MAC
Last Reply 4 years 9 months ago.
1827
0.0
0 TCC_2
How to copy the image to the standby bootflash in Catalyst 6000 / 6500 series switches with redundant supervisors
Last Reply 4 years 9 months ago.
2915
5.0
0 TCC_2
The Catalyst 3560 and 3750 series switches fail to provide inline power to a PD that operates in IEEE mode
Last Reply 3 years 2 months ago.
3042
0.0
0 TCC_2
Nexus and MDS 9148
Last Reply 3 years 3 months ago.
448
0.0
0 didier_drieux
Cisco_router1941w connection.png
Last Reply 5 months 4 days ago.
107
0.0
0 INCSallen18
What are the hardware/software limitations regarding the number of trunk ports configured on a Catalyst 6500 Series Switch?
Last Reply 4 years 9 months ago.
363
0.0
0 TCC_2
Hardware and Software compatibility recommendations for installing Catalyst 3750 switches in a stack.
Last Reply 4 years 9 months ago.
1367
0.0
0 TCC_2
How to configure EtherChannel on Cisco Catalyst switches that run CatOS system software
Last Reply 4 years 9 months ago.
776
0.0
0 TCC_2
Troubleshooting IPv6 BGP Peer Establishment on a Cisco Router
Last Reply 2 years 2 months ago.
3163
0.0
0 SunilKhanna
Unable to create more than twelve EtherChannels on the Catalyst 3750 stack using Cisco Network Assistant (CNA).
Last Reply 4 years 9 months ago.
1000
0.0
0 TCC_2
Customer receives the error message "%RMON-5-FALLINGTRAP: Falling trap is generated" SNMP trap in Catalyst switches running Cisco IOS
Last Reply 4 years 9 months ago.
3187
0.0
0 TCC_2
The "Processor [number] of module in slot [number] cannot service session requests" error message appears in the logs of a Cisco Catalyst 6500 switch
Last Reply 4 years 9 months ago.
3116
0.0
0 TCC_2
CAT3560G connected with CAT2960S
Last Reply 3 years 8 months ago.
483
0.0
0 kechengpc
How to deploy two ISP connections in a single Layer3 switch?
Last Reply 9 months 1 week ago.
1014
0.0
0 ecechandru90
Cisco_Catalyst_6509-E_Switch
Last Reply 4 years 8 months ago.
2457
0.0
0 Ashley Price
The %Error opening flash:update/info (No such file or directory) error message is received on a Catalyst 3750 series switch
Last Reply 4 years 9 months ago.
6723
0.0
0 TCC_2
The SPAN destination port functions properly, but the status is shown as up/down while monitoring Catalyst switches.
Last Reply 4 years 9 months ago.
2040
0.0
0 TCC_2
User cannot get a link up with a GBIC port
Last Reply 4 years 9 months ago.
1711
0.0
0 TCC_2
"%SW-VLAN-4-BAD-STARTUP-VLAN-CONFIG-FILE: Failed to configure VLAN from startup-config" error message received on catalyst 4000/4500 switch
Last Reply 4 years 9 months ago.
961
0.0
0 TCC_2
How to save the configurations of a line card or switching module when moved from one slot to another in the Cisco Catalyst 4000/4500 and Catalyst 6000/6500 Series switches
Last Reply 4 years 9 months ago.
2285
0.0
0 TCC_2
A Novell IPX workstation does not have the Novell Login Screen at bootup due to spanning tree delays
Last Reply 4 years 9 months ago.
743
0.0
0 TCC_2
QOS -- Max Reserve Bandwidth
Last Reply 3 years 2 months ago.
12603
0.0
0 abmehta
N7K-M132XP-12/L: Need to be RMAed or not ?
Last Reply 1 year 4 months ago.
2685
5.0
0 Yogesh Ramdoss
How to configure a default gateway on the Catalyst 6500, 6000, 5500, or 5000 series running CatOS software
Last Reply 4 years 9 months ago.
3945
0.0
0 TCC_2
Filter Results
Subject Views Rating Comments Author
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 4 days 30 min ago.
5
5.0
0 hsticher
blog What can be done about WAN packet loss and its impact on WAN application performance? - shared by Bharat Shrinevas
Last Reply 1 week 3 days ago.
13
0.0
0 bshrinev
blog What can L2TP do for your network? - Network World - shared by Rachana Pandey
Last Reply 2 weeks 2 days ago.
4
0.0
0 racpande
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 2 weeks 2 days ago.
908
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 2 weeks 2 days ago.
681
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 weeks 3 days ago.
4
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 2 weeks 5 days ago.
17488
5.0
0 shashasi
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 3 weeks 3 days ago.
7238
5.0
9 rucjain
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 3 weeks 6 days ago.
30
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 month 4 days ago.
1703
5.0
3 ag2
blog Configuring a frame-relay switch
Last Reply 1 month 1 week ago.
4749
5.0
6 aninchat
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 4 months 2 weeks ago.
675
0.0
1 ramugaju
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 6 months 1 week ago.
16975
4.6
11 jakula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 8 months 1 week ago.
1242
4.7
1 ag2
blog How to build the topology of an OSPF area
Last Reply 8 months 1 week ago.
1771
5.0
4 aninchat
blog Parity Error.
Last Reply 9 months 1 day ago.
1982
4.5
4 insharie
blog Nexus 7000 ACL logging (OAL)
Last Reply 9 months 2 weeks ago.
12232
0.0
7 Robert Taylor
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 1 year 2 months ago.
6621
5.0
6 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 1 year 5 months ago.
3247
4.8
1 aninchat
blog Router Crashes
Last Reply 1 year 6 months ago.
5581
5.0
1 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 8 months ago.
21485
5.0
3 aninchat
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 1 year 9 months ago.
8351
5.0
7 pnagpal
blog Important Nexus 7000 NX-OS Software Update
Last Reply 1 year 10 months ago.
4019
5.0
0 ctripoli
blog New Cisco 5915 ESR
Last Reply 1 year 11 months ago.
4109
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2 sonasing
blog Moving Beyond the Internet of Things in 2012
Last Reply 2 years 2 months ago.
1699
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0 mmorrow
Filter Results
LAN, Switching and Routing
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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
Views: 11
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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: 430
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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: 80
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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: 148
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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: 72
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Average Rating: 0 (0 ratings)
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: 205
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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: 144
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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: 276
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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: 169
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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: 129
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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: 2587
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Average Rating: 5 (2 ratings)
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: 155
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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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