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.

if for testing you told your natted router to forward all ports to an ip address. would that in any way effect a differant natted address that was...
19 min 31 sec ago
In a small environment, is it viable to connect server farm directly to Nexus 7700 switches for LAN/SAN connectivity instead of adding Nexus 5500 s...
4 hours 3 min ago
If you are preparing for your Network Optimization Service Quarterly Business Review, here are a few helpful tips:Make sure the right stakeholders...
by marobbs
13 hours 49 min ago
Greetings,Can somebody please point me to where I might be able to find a Statement of Volatility for the Cisco SF100D-05 100 Series Desktop Switch...
14 hours 30 min ago
Good Morning,We have here in the company line switches Cisco WS-C2960S-48fps-L, and after atualilzação of IOS to version c2960s-universalk9-mz.152-...
16 hours 6 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6733 569 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion where is the line
Last Reply 19 min 31 sec ago.
0 0 0 0 gerrybutler
discussion Cheapest Cisco IOS Switches VLAN Compatible
Last Reply 2 hours 50 min ago.
58 0 5 12 Leo Laohoo
discussion Cisco 3750X
Last Reply 3 hours 10 min ago.
1 0 0 1 Leo Laohoo
discussion Cisco 3750X
Last Reply 3 hours 10 min ago.
0 0 0 1 Leo Laohoo
discussion vlan interface can not be up in Nexus7000
Last Reply 3 hours 25 min ago.
5 0 0 3 InayathUlla Sharieff
discussion Ask the Expert: Implementing and Troubleshooting Virtual Switching System (VSS) on Cisco Catalyst Switches 4500 and 6500
Last Reply 3 hours 50 min ago.
6 0 0 3 Monica Lluis
discussion Server Farm Design
Last Reply 4 hours 3 min ago.
0 0 0 0 abbasali5
discussion Cisco 3750X
Last Reply 5 hours 56 min ago.
9 0 0 1 jhager001
discussion Problem VSS 6500
Last Reply 6 hours 13 min ago.
5 0 0 3 Reza Sharifi
discussion How to view the tcp window size set on a router
Last Reply 7 hours 13 min ago.
0 0 0 1 Karsten Iwen
discussion OTV route dampening
Last Reply 9 hours 30 min ago.
5 0 0 3 steve-fuller
discussion spanning-tree convergence
Last Reply 9 hours 46 min ago.
6 0 5 2 visitor68
discussion SIP Priority / VOIP QoS issues
Last Reply 9 hours 50 min ago.
51 0 0 15 Joseph W. Doherty
discussion Catalyst 3750 Access List to prevent IP Stealing
Last Reply 10 hours 55 min ago.
99 0 5 16 smithster5683
discussion Cisco 6513 bridge-group riddle?
Last Reply 11 hours 46 min ago.
9 0 0 3 Pat Kinnison
discussion 4500x SVI problem
Last Reply 12 hours 13 min ago.
23 0 5 4 Jon Marshall
discussion Connection dropping with regular interval
Last Reply 12 hours 32 min ago.
3 0 0 1 Pat Kinnison
discussion IP protocol is not to communicate between computers in a LAN. Is that true?
Last Reply 12 hours 44 min ago.
35 0 5 6 Jon Marshall
discussion Cat 4500 sup 7E queueing
Last Reply 13 hours 53 sec ago.
6 0 0 1 Kevin Dorrell
discussion SG500 Trunk Port to Cisco 3560 Trunk not passing traffic
Last Reply 13 hours 9 min ago.
36 0 0 7 camc_8011
discussion QOS in a Campus network
Last Reply 13 hours 23 min ago.
15 0 0 4 Erico Verissimo
discussion AAA authentication Failed with Steel Belted Radius Server
Last Reply 13 hours 26 min ago.
21 0 0 1 Pat Kinnison
discussion Three Tips for a Successful Review Period
Last Reply 13 hours 49 min ago.
6 0 0 0 marobbs
discussion Duplicate VLAN 2811
Last Reply 13 hours 59 min ago.
17 0 5 2 alexa@cftoday
discussion VRRP supported switch with 9+1
Last Reply 14 hours 27 min ago.
8 0 4 4 sanjay-1190
Filter Results
Subject Views Rating Comments Author
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 2 days 6 hours ago.
295285
5.0
38
The "%SPANTREE-7-BLOCK_PORT_TYPE : Blocking [chars] on [chars]. Inconsistent port type" message is logged on Cisco Catalyst switches
Last Reply 4 days 13 hours ago.
18722
0.0
2 TCC_2
%C4K_SUPERVISOR-2-SOFTERROR / %C4K_SUPERVISOR-2-FPGASOFTERROR
Last Reply 1 week 10 hours ago.
6
0.0
0 InayathUlla Sharieff
Egress QOS
Last Reply 1 week 11 hours ago.
53805
5.0
14 somgupta
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 3 days ago.
52019
4.6
7 Thamaraiselvam Santhanam
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 2 weeks 9 hours ago.
111
0.0
0 Luis Villanueva Brito
Properly Installing Cisco USB Console Driver
Last Reply 2 weeks 2 days ago.
118
0.0
1 lsgabrillo
How to define the VLANs allowed on a trunk link
Last Reply 2 weeks 4 days ago.
189102
5.0
3 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 3 weeks 6 days ago.
125803
4.7
53
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 3 weeks 6 days ago.
6168
5.0
5 Furose Khan Mohammed Ali
Error Message:%ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface <interface> Power Controller reports power Imax error detected
Last Reply 1 month 6 days ago.
13820
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 month 1 week ago.
63
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 month 2 weeks ago.
21617
5.0
3 Souvik Ghosh
SSH version 2 no IOS cat4000-i5s-mz.122-25.EWA14.bin
Last Reply 1 month 2 weeks ago.
24
0.0
1 Sergio Alvares
Cisco Nexus 7000 / 7700 Line Cards
Last Reply 1 month 2 weeks ago.
160
0.0
0 Shaun Hummel
Cisco 891 fresh configuration/management without console cable
Last Reply 2 months 2 weeks ago.
36
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 months 2 weeks ago.
149
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 months 2 weeks ago.
46
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 2 months 3 weeks ago.
46
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 3 months 2 days ago.
26889
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 3 months 3 days ago.
101464
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 3 months 6 days ago.
4237
0.0
0 TCC_2
3850 Boot Mode
Last Reply 3 months 1 week ago.
1824
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 3 months 1 week ago.
19251
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 3 months 2 weeks ago.
88
0.0
4 npsangvt1
Filter Results
Subject Views Rating Comments Author
blog Loading an IOS on a switch via Xmodem
Last Reply 4 days 8 hours ago.
50286
5.0
8 Aninda Chatterjee
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 2 months 3 days ago.
26250
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 7 months 1 week ago.
20923
4.6
12
blog License Activation on 4500
Last Reply 10 months 3 weeks ago.
431
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 10 months 3 weeks ago.
7391
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 1 month ago.
2529
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 1 month ago.
18849
5.0
3 ajaju
blog Configuring a frame-relay switch
Last Reply 1 year 3 months ago.
6726
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 1 year 3 months 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 1 year 3 months ago.
9
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 1 year 4 months ago.
124
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 4 months ago.
409
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 5 months ago.
1215
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 5 months ago.
762
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 5 months ago.
129
5.0
0
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 5 months ago.
8326
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 5 months ago.
289
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 5 months ago.
7869
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 9 months ago.
514
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 2 years 2 weeks ago.
2075
4.7
1 Anand G
blog Parity Error.
Last Reply 2 years 1 month ago.
2399
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 2 years 2 months ago.
17017
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 9 months ago.
4501
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 10 months ago.
5925
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 1 month ago.
11430
5.0
7 pnagpal
Filter Results
LAN, Switching and Routing
Views: 0
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
by
LAN, Switching and Routing
Views: 1077
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
by
LAN, Switching and Routing
Views: 1218
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
by
LAN, Switching and Routing
Views: 769
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 16520
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.8 (4 ratings)
LAN, Switching and Routing
Views: 340
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 408
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
LAN, Switching and Routing
Views: 234
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 222
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 532
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 8
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 46
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 36
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 413
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 658
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 389
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (3 ratings)
by rucjain
LAN, Switching and Routing
Views: 399
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (4 ratings)
LAN, Switching and Routing
Views: 14
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 324
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
LAN, Switching and Routing
Views: 227
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Filter Results

This Month

Events

May 11
Ask the Expert
April 13
Ask the Expert
January 5
Ask the Expert
July 21, 2014
Ask the Expert
March 31, 2014
Ask the Expert
April 1, 2014
Webcasts
March 10, 2014
Webcasts
July 30, 2012
Ask the Expert
December 12, 2012
Techtalks
  • 1
  • 2
  • 3
  • 4
  • 5
July 27, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
December 31, 1969
Facebook Forums
May 25, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
October 11, 2011
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
January 6, 2014
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
January 17, 2012
Webcasts
October 11, 2009
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 1, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 15, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 29, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
October 10, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5

Actions

 
 

Popular Discussions

Popular Documents

Rank Username Points
1 17,747
2 10,018
3 8,447
4 8,223
5 8,204
Rank Username Points
455
204
173
102
84