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.

hello friends, having trouble with VACL. Heres a little background on what I'm trying to achieve, see if you can help.Trying to basically allow tra...
1 day 7 hours ago
I am troubleshooting an issue between ASR 9K and ASR 1002X  routers The ospf session between these two routers keeps going down and up. Below is my...
1 day 9 hours ago
I connected a 2960 to a 4500 and I'm able to ping and telnet back and forth to the switch however, my pc is getting a dhcp address but can not conn...
1 day 19 hours ago
I'm using a syslog server in my environment.  I have a firewall that talks to a syslog server.  If I set logging trap 7 on the firewall, is that th...
1 day 21 hours ago
Hi,I have two offices connected by a fiber. Each office are connected with a cisco 3750 and in the middle I have a cisco 2960G.I have several vlans...
2 days 3 hours 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 4500X Problem - cannot write memory - startup-config file open failed (Device or resource busy)
Last Reply 5 min 44 sec ago.
122 0 0.0 1 2colin-cant
discussion FRULink 10G SM Module - Can a 10G sm module run at 1G
Last Reply 2 hours 31 min ago.
16 0 0.0 3 Leo Laohoo
discussion Router throughput Cisco 867vae vs ISP provided router
Last Reply 2 hours 39 min ago.
6 0 0.0 1 Leo Laohoo
discussion Assigning a seperate internet connection to a certain vlan .
Last Reply 2 hours 39 min ago.
14 0 5 4 BilalNass
discussion Problems with switching capacity
Last Reply 5 hours 20 min ago.
15 0 0.0 1 Reza Sharifi
discussion ip nat outside source static
Last Reply 7 hours 8 min ago.
0 0 0.0 1 Jon Marshall
discussion Port channel issue
Last Reply 7 hours 21 min ago.
30 0 3 5 Madhukrishnan G...
discussion WAN interface sending DHCP NAK
Last Reply 7 hours 22 min ago.
20 0 4 3 davidfield
discussion Static to OSPF Migration
Last Reply 12 hours 20 min ago.
8 0 5 1 Jon Marshall
discussion Cisco 4500X + VSS + Trust Sec Switch to Switch Encryption
Last Reply 12 hours 31 min ago.
350 0 0.0 3 Michal Janowski
discussion 6509-E stuck on route processor
Last Reply 15 hours 53 min ago.
25 0 0.0 2 ahmed.gadi
discussion I cannot access ASDM on ASA 5505
Last Reply 17 hours 2 min ago.
40 0 0.0 3 Abdullah Almokhtar
discussion Strange Intermittent Connection
Last Reply 20 hours 48 min ago.
14 0 0.0 2 john.medalla
discussion ospf link flapping
Last Reply 1 day 2 hours ago.
3 0 0.0 1 Reza Sharifi
discussion cisco 5548UP FC
Last Reply 1 day 2 hours ago.
4 0 0.0 1 Reza Sharifi
discussion Setting port for Voice + Data
Last Reply 1 day 3 hours ago.
18 0 0.0 1 Charles Hill
discussion Cisco Nexus 3000 ssh access
Last Reply 1 day 4 hours ago.
24 0 0.0 4 silverdragan
discussion Switch Port config connected to Cisco ATA Switch
Last Reply 1 day 4 hours ago.
22 0 5 2 mahesh parmar
discussion how to block certain range of mac addresses
Last Reply 1 day 5 hours ago.
9 0 0.0 1 ahmed.gadi
discussion VACL contain hosts within VLAN
Last Reply 1 day 7 hours ago.
3 0 0.0 0 dkxurple10
discussion Using different native VLANs on different ports of a switch configured as trunks
Last Reply 1 day 8 hours ago.
102 0 0.0 16 Nikolaos Milas
discussion 6509 ROMMON
Last Reply 1 day 8 hours ago.
24 0 0.0 3 ahmed.gadi
discussion ospf link flapping
Last Reply 1 day 9 hours ago.
0 0 0.0 0 krutibasa majhi
discussion EIGRP Maximum-Paths
Last Reply 1 day 12 hours ago.
20 0 0.0 2 paul driver
discussion Configuring VLAN on separate subnets
Last Reply 1 day 12 hours ago.
8 0 0.0 0 jakov.milic
Filter Results
Subject Views Rating Comments Author
Temperature alarms on WS-X6904-40G
Last Reply 3 days 16 hours ago.
6
5.0
0 Madhukrishnan Gopinathan Nair
How to configure an IP access list to control directed broadcasts for the Wake-on-LAN setup
Last Reply 4 days 5 hours ago.
2794
0.0
1 TCC_2
Nexus - vPC Recommendations
Last Reply 5 days 17 hours ago.
18419
5.0
3 pnagpal
Understanding SPAN,RSPAN,and ERSPAN
Last Reply 1 week 2 days ago.
33486
4.7
5 ashirkar
Increased Total output drops/OutDiscards by QoS for Desktop Series Switches Products
Last Reply 1 week 5 days ago.
10
0.0
0 Csc TsWebDocs
Telnet session to FWSM module disconnects due to MTU size issues in 6500 or 7600 switches
Last Reply 2 weeks 4 days ago.
1411
0.0
0 TCC_2
X2-10GB-LRM vs X2-10GB-SR compatability
Last Reply 2 weeks 4 days ago.
1370
0.0
9 yogesh rajguru
Fortify Your LAN with Cisco Catalyst Switching - FAQ from live webcast
Last Reply 2 weeks 5 days ago.
138
5.0
0 Anim Saxena
QoS marking based on the “trust dscp” IOS CLI command
Last Reply 2 weeks 6 days ago.
19
0.0
0 ben.epskamp
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - FAQ from live webcast
Last Reply 3 weeks 3 days ago.
4738
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 month 16 hours ago.
7085
0.0
1 TCC_2
SNMP Engine over 80% CPU 100%!!! ?
Last Reply 1 month 1 day ago.
4242
0.0
3 vita_user
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 month 3 days ago.
43876
4.5
6 Thamaraiselvam Santhanam
3850: Understanding interface configuration on NM modules
Last Reply 1 month 3 days ago.
16211
5.0
8 Richard Primm
Password Recovery on Cisco Catalyst 3850
Last Reply 1 month 3 days ago.
1916
0.0
2 Collin Clark
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 1 month 6 days ago.
120
0.0
2 Ty Gadberry
Route to Host Stuck on Switch
Last Reply 1 month 1 week ago.
2729
5.0
4 martinez-adrian
Single-sided vs double-sided vpc
Last Reply 1 month 2 weeks ago.
8975
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 1 month 2 weeks ago.
6968
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 1 month 2 weeks ago.
3730
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 1 month 2 weeks ago.
7060
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 1 month 2 weeks ago.
21
0.0
0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 month 2 weeks ago.
100944
4.0
1 Shaun Hummel
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 month 2 weeks ago.
41924
5.0
12 SunilKhanna
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 2 months 11 hours ago.
396
0.0
0 TCC_2
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 2 months 3 weeks ago.
17613
4.6
12 jakula
blog License Activation on 4500
Last Reply 6 months 5 days ago.
192
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 6 months 1 week ago.
7133
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 9 months 1 week ago.
2239
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 9 months 1 week ago.
15905
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 9 months 3 weeks ago.
39765
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 11 months 1 week ago.
5958
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 11 months 2 weeks ago.
386
5.0
0 Francine Richards
blog Upcoming Ask the Expert Event with Cisco Designated VIP Marwan Al-shawi May 12-23
Last Reply 11 months 2 weeks ago.
123
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 11 months 3 weeks ago.
107
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 2 days ago.
320
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 2 weeks ago.
1327
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 2 weeks ago.
743
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 2 weeks ago.
92
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 1 year 2 weeks ago.
24498
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 3 weeks ago.
7919
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 3 weeks ago.
273
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 1 month ago.
5285
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 4 months ago.
1611
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 8 months ago.
1835
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 8 months ago.
2289
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 1 year 9 months ago.
15658
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 5 months ago.
4227
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 6 months ago.
5820
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 2 years 9 months ago.
10417
5.0
7 pnagpal
Filter Results
LAN, Switching and Routing
Views: 876
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 1123
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 677
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 13482
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.8 (4 ratings)
LAN, Switching and Routing
Views: 288
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 363
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
LAN, Switching and Routing
Views: 186
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 196
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 453
  • 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: 31
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 33
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 405
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 615
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 314
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (3 ratings)
by rucjain
LAN, Switching and Routing
Views: 343
  • 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: 319
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
LAN, Switching and Routing
Views: 222
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Filter Results

Today

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 6th, 2014
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
October 11th, 2011
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
May 25th, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
December 31st, 1969
Facebook Forums
July 27th, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
December 12th, 2012
Techtalks
July 30th, 2012
Ask the Expert
October 21st, 2013
Ask the Expert
January 17th, 2012
Webcasts
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

Actions

Login or Register to take actions
 

Featured Content

Popular Discussions

Popular Documents

Rank Username Points
1
Jon Marshall
16,867
2
Reza Sharifi
9,389
3
Giuseppe Larosa
8,202
4
Leo Laohoo
7,744
5
Peter Paluch
7,654
Rank Username Points
Jon Marshall
469
Joseph W. Doherty
131
Reza Sharifi
100
Leo Laohoo
98
Charles Hill
64