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.

What does the status 'Open' really mean? I read the documentation that says 'the pair of wires is open', which doesn't explain much.
5 min 32 sec ago
AllUnfortunately I have a customer that is exposed from a service coverage point of view (which we are currently resolving & proposing a direct...
2 hours 23 min ago
Ciao,in order to create a VSS cluster is it mandatory to put the C6880-X-16P10G line card in performance mode ?BR,Luciano
2 hours 49 min ago
Hi All please see belowThe WS-F6700-DFC3C is showing on show module 9 but is missing from the show inventory command, would anyone know if this is...
6 hours 21 min ago
Hi,    I read this document   http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/4170-ospfprocesses.html  below figure 4, i...
by fly
6 hours 57 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6738 569 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion Cable Diagnostics Cisco 3650
Last Reply 5 min 32 sec ago.
0 0 0.0 0 Robert Falconer
discussion 6500 HIGH CPU, Standby HSRP state changes continuously
Last Reply 13 min 38 sec ago.
45 0 0.0 7 Madhukrishnan G...
discussion Shaping 10G to 5G
Last Reply 13 min 44 sec ago.
9 0 0.0 1 Reza Sharifi
discussion Inter-vlan routing issue
Last Reply 14 min 58 sec ago.
60 0 0.0 2 emglobo01
discussion Add a second RP for a multicast group
Last Reply 24 min 18 sec ago.
17 0 0.0 1 dikatanou
discussion Basic 3850 Management port and remote SSH access with Local User auth!
Last Reply 36 min 2 sec ago.
7 0 0.0 1 apasillas
discussion Using Fiber SFP on Cisco 3560-E Series- Down/Down
Last Reply 44 min 15 sec ago.
0 0 0.0 1 Bilal Nawaz
discussion Nexus 5596 OS upgrade delay
Last Reply 51 min ago.
10 0 0.0 2 glen.grant
discussion Supervison SUP 720-3B swap on a cisco 6509
Last Reply 52 min 53 sec ago.
0 0 0.0 4 Joseph W. Doherty
discussion Unable to stack 3750 and 3750X
Last Reply 1 hour 43 min ago.
4 0 0.0 5 premsmily
discussion help with multiple nat translation on a Cisco Nexus 3548
Last Reply 1 hour 43 min ago.
5 0 0.0 1 Jon Marshall
discussion Can NOT upgrade IOS in C6880-X-LE
Last Reply 1 hour 45 min ago.
37 0 5 6 jesnowakb
discussion Cisco 1921 Routing/NAT Issue
Last Reply 1 hour 7 min ago.
105 0 5 23 Jon Marshall
discussion Configuration Help
Last Reply 2 hours 13 min ago.
0 0 0.0 1 Tom Simanovich
discussion Site2site VPN (RV325 Router & ASA firewall 5555)
Last Reply 2 hours 23 min ago.
0 0 0.0 0 andrwalk
discussion show run does not show usernames configured on the router
Last Reply 2 hours 25 min ago.
0 0 0.0 3 Bilal Nawaz
discussion Problem to Up port gi 1/1/1 C3KX-NM-1G cisco 3750
Last Reply 2 hours 46 min ago.
1741 2 0.0 8 kacza
discussion 6880 - VSS - C6880-X-16P10G
Last Reply 2 hours 49 min ago.
1 0 0.0 0 Luciano Vigano'
discussion Error opening tftp (Timed out)
Last Reply 2 hours 58 min ago.
44972 3 4.8 39 dewayne.woods
discussion Looking for suggestions moving to centralized DHCP Server from localized switch based DHCP.
Last Reply 3 hours 16 min ago.
0 0 0.0 1 Jon Marshall
discussion Cisco 3850 Switch and Windows 7 IP Conflicts
Last Reply 3 hours 25 min ago.
376 2 0.0 9 joe@affirmedsys...
discussion Cisco C4503-E is being reloaded without a reason
Last Reply 3 hours 36 min ago.
27 0 0.0 5 cehill
discussion WS-F6700-DFC3C Missing from show inventory
Last Reply 6 hours 21 min ago.
0 0 0.0 0 billybong
discussion Multiple SPAN (monitor) sessions on 6509 VSS
Last Reply 5 hours 52 min ago.
30 0 0.0 3 dimensyssrl
discussion Question about Stacking
Last Reply 6 hours 3 min ago.
11 0 0.0 1 Joseph W. Doherty
Filter Results
Subject Views Rating Comments Author
QoS marking based on the “trust dscp” IOS CLI command
Last Reply 6 hours 49 min ago.
3
0.0
0 ben.epskamp
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - FAQ from live webcast
Last Reply 3 days 23 hours ago.
4528
5.0
2 ashirkar
The %SUPQ-4-CPUHB_RECV_STARVE: Still seeing receive queue stuck after throttling error message is displayed in the logs of Cisco Catalyst 2970, Catalyst 3560, or Catalyst 3750 Metro series switches running Cisco IOS System Software
Last Reply 1 week 3 days ago.
7016
0.0
1 TCC_2
SNMP Engine over 80% CPU 100%!!! ?
Last Reply 1 week 4 days ago.
4199
0.0
3 vita_user
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 5 days ago.
43176
4.5
6 Thamaraiselvam Santhanam
3850: Understanding interface configuration on NM modules
Last Reply 1 week 5 days ago.
15672
5.0
8 Richard Primm
Password Recovery on Cisco Catalyst 3850
Last Reply 1 week 6 days ago.
1811
0.0
2 Collin Clark
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 2 weeks 2 days ago.
70
0.0
2 Ty Gadberry
Route to Host Stuck on Switch
Last Reply 2 weeks 5 days ago.
2706
5.0
4 martinez-adrian
Single-sided vs double-sided vpc
Last Reply 3 weeks 5 days ago.
8877
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 2 years 6 months ago.
6943
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 3 years 3 months ago.
3689
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 3 years 5 months ago.
7042
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 3 years 8 months ago.
18
0.0
0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 year 1 month ago.
98126
4.0
1 Shaun Hummel
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 month 3 days ago.
41197
5.0
12 SunilKhanna
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 5 years 9 months ago.
396
0.0
0 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 month 3 weeks ago.
101137
4.7
47 ashirkar
example of Embedded Event Manager (EEM) on my 881W - to shut down a interface at 1am
Last Reply 1 month 3 weeks ago.
202
4.0
2 dshornstein
OSPF and IS-IS Differences
Last Reply 1 month 3 weeks ago.
3993
5.0
1 inderdeeps
Switch Fabric- Troubleshooting tips
Last Reply 3 years 4 months ago.
18587
5.0
2 pnagpal
The "%SW_DAI-4-DHCP_SNOOPING_DENY:" error message is received when configuring the dynamic ARP inspection in switches that run Cisco IOS Software
Last Reply 2 months 2 days ago.
27965
5.0
4 TCC_2
Troubleshooting tips for 3750X Stack power feature
Last Reply 2 months 5 days ago.
13558
4.0
5 pnagpal
ITD: Load Balancing, Traffic Steering & Clustering using Cisco switches
Last Reply 2 months 1 week ago.
59
5.0
0 expertadvisor20151
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 2 months 1 week ago.
17174
4.6
12 jakula
blog License Activation on 4500
Last Reply 5 months 2 weeks ago.
179
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 5 months 2 weeks ago.
7038
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 8 months 2 weeks ago.
2206
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 8 months 2 weeks ago.
15585
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 9 months 1 week ago.
38731
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 10 months 2 weeks ago.
5895
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 10 months 3 weeks ago.
383
5.0
0 Francine Richards
blog Upcoming Ask the Expert Event with Cisco Designated VIP Marwan Al-shawi May 12-23
Last Reply 10 months 3 weeks ago.
123
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 11 months 6 days ago.
99
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 11 months 2 weeks ago.
314
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 2 years 10 months ago.
1322
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 2 years 10 months ago.
741
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 years 1 month ago.
82
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 years 11 months ago.
24316
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 10 months ago.
7879
5.0
9 rucjain
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 1 year 1 week ago.
272
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 1 week ago.
5080
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 3 months ago.
1540
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 7 months ago.
1805
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 8 months ago.
2275
4.5
4 InayathUlla Sharieff
Filter Results
LAN, Switching and Routing
Views: 854
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 1109
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 658
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 13116
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.8 (4 ratings)
LAN, Switching and Routing
Views: 283
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 357
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
LAN, Switching and Routing
Views: 182
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 194
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 443
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 8
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 28
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 32
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 404
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 608
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 309
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (3 ratings)
by vbhutta
LAN, Switching and Routing
Views: 485
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
by rucjain
LAN, Switching and Routing
Views: 332
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (4 ratings)
LAN, Switching and Routing
Views: 10
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 317
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
LAN, Switching and Routing
Views: 221
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Filter Results

Events

January 5th
Ask the Expert
August 15th, 2014
Ask the Expert
July 21st, 2014
Ask the Expert
July 9th, 2014
Facebook Forums
March 31st, 2014
Ask the Expert
April 1st, 2014
Webcasts
March 10th, 2014
Webcasts
January 17th, 2012
Webcasts
July 30th, 2012
Ask the Expert
December 12th, 2012
Techtalks
July 27th, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
December 31st, 1969
Facebook Forums
May 25th, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
October 11th, 2011
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
January 6th, 2014
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
October 11th, 2009
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 1st, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 15th, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 29th, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
October 10th, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
March 12th, 2012
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5

Actions

Login or Register to take actions
 

Featured Content

Popular Discussions

Popular Documents

Rank Username Points
1
Jon Marshall
16,571
2
Reza Sharifi
9,304
3
Giuseppe Larosa
8,202
4
Leo Laohoo
7,651
5
Peter Paluch
7,599
Rank Username Points
Jon Marshall
537
Reza Sharifi
116
Joseph W. Doherty
114
Peter Paluch
71
Bilal Nawaz
64