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 Community, I am trying to restrict internet only access for a specific vlan e.g ( 620 Vlan - 172.16.62.0/24 ) but when l apply the following acc...
17 min 58 sec ago
Please advise..!I have 3 switches to be setup in my LAN and was trying to confirm if all the switches are left with default VTP Mode: Server, then...
1 hour 33 min ago
Hello, I have been working on trying to pre-stage a relatively small but somewhat complex network consisting of VOIP and Data for a small remote of...
5 hours 36 min ago
Does anyone know if the 2960x-48LPS switch has the POE for each switch port split by running odd and even ports on different power modules?
12 hours 14 min ago
Please help someone, I have executed the below command on ASR 1000 router and there are 2 things happened. 1.This command removed all the BGP confi...
12 hours 34 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 Nexus 7000: How do I remove interfaces from a port-channel when those interfaces no longer exist?
Last Reply 5 min 5 sec ago.
2 0 0 1 SURYA AHUJA
discussion Partial One way Routing. Need Help
Last Reply 11 min 56 sec ago.
27 0 0 2 SURYA AHUJA
discussion Access Lists on Vlan Interface - Slow Performance
Last Reply 17 min 58 sec ago.
0 0 0 0 sgalloway@acmi....
discussion Catalyst 2960 not transmitting any data.
Last Reply 30 min 42 sec ago.
4 0 0 8 Samrat Bose
discussion LAN_ VTP
Last Reply 1 hour 33 min ago.
0 0 0 0 alvinreddy
discussion Nexus 7000: How do I remove interfaces from a port-channel when those interfaces no longer exist?
Last Reply 1 hour 48 min ago.
2 0 0 1 Leo Laohoo
discussion Cannot SSH/Telnet to Cisco 867Vae
Last Reply 2 hours 6 min ago.
0 0 5 2 Nirbhai Gill
discussion Catalyst 3750 Access List to prevent IP Stealing
Last Reply 2 hours 10 min ago.
47 0 5 8 Peter Paluch
discussion SWITCH 3850 NETWORK MODULE AND GLC-SX-MM COMPATIBILITY
Last Reply 2 hours 30 min ago.
45 0 0 8 ROGER FERNANDO ...
discussion Duplicate IP's
Last Reply 3 hours 46 sec ago.
56 0 0 6 kevin.szatkowski
discussion Switchport Spanning Tree Loop Prevention - Cisco 2960
Last Reply 3 hours 36 min ago.
17 0 5 4 danny9797
discussion CISCO 2960 24 TC-L
Last Reply 4 hours 53 min ago.
4 0 0 2 ricardo.marrero
discussion Best Practice for Routing DATA and VOICE on an ASA
Last Reply 5 hours 36 min ago.
0 0 0 0 Daniel Martin
discussion Switching
Last Reply 6 hours 2 min ago.
12 0 0 4 ndemers
discussion Storm control blocking
Last Reply 6 hours 6 min ago.
32 0 0 5 amikat
discussion Double NAT not internet facing
Last Reply 6 hours 59 min ago.
4 0 0 2 JORGE FERNANDEZ...
discussion HSRP & EIGRP
Last Reply 7 hours 40 min ago.
984 0 4.33333 9 Terry Vasquez Jr
discussion Setup an inbound ACL when NAT is used?
Last Reply 7 hours 49 min ago.
30 0 0 6 paul driver
discussion RSPAN cisco + hp procurve 6120xg
Last Reply 9 hours 12 min ago.
1 0 0 0 Maxim Bezzubov
discussion ip dhcp snooping client can't get ip dhcp
Last Reply 10 hours 8 min ago.
14 0 0 3 Bekzod Fakhriddinov
discussion *** UPDATED *** Two networks one infrastructure
Last Reply 10 hours 10 min ago.
67 0 0 13 Stacey Hummer
discussion HSRP miscommunication -> both active on a vlan
Last Reply 10 hours 17 min ago.
25 0 0 12 Hitesh Vinzoda
discussion %OSPF-5-ADJCHG: Process 1800, Nbr 172.20.102.147 on GigabitEthernet0/2.121 from FULL to DOWN, Neighbor Down: Dead timer expired
Last Reply 10 hours 29 min ago.
11 0 0 2 Joseph W. Doherty
discussion How to delay EIGRP adjacency Check
Last Reply 10 hours 59 min ago.
24 0 0 9 paul driver
discussion Cisco 2960x-48LPS switch
Last Reply 12 hours 14 min ago.
0 0 0 0 williamehmke1
Filter Results
Subject Views Rating Comments Author
Error Message:%ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface <interface> Power Controller reports power Imax error detected
Last Reply 12 hours 34 min ago.
13430
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 day 9 hours ago.
0
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 week 2 days ago.
20802
5.0
3 Souvik Ghosh
SSH version 2 no IOS cat4000-i5s-mz.122-25.EWA14.bin
Last Reply 1 week 6 days ago.
17
0.0
1 Sergio Alvares
Cisco Nexus 7000 / 7700 Line Cards
Last Reply 1 week 6 days ago.
42
0.0
0 Shaun Hummel
Egress QOS
Last Reply 3 weeks 2 days ago.
52875
5.0
13 somgupta
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 month 2 hours ago.
50296
4.7
51 ashirkar
Cisco 891 fresh configuration/management without console cable
Last Reply 1 month 1 week ago.
24
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 1 month 1 week ago.
121
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 1 month 1 week ago.
38
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 1 month 3 weeks ago.
32
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 1 month 3 weeks ago.
25751
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 month 3 weeks ago.
95662
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 2 months 20 hours ago.
4114
0.0
0 TCC_2
3850 Boot Mode
Last Reply 2 months 2 days ago.
1592
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 2 months 4 days ago.
18693
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 2 months 1 week ago.
79
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 2 months 2 weeks ago.
49
0.0
0 josecesp
Spanning Tree Loop Troubleshooting and Safeguards
Last Reply 2 months 2 weeks ago.
47736
5.0
2 James D Hensley
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 2 months 2 weeks ago.
292569
5.0
37
The "%C4K_SWITCHMANAGER-4-S2WERRORREPORT" error message appears in the logs of a Cisco Catalyst 4500 Switch, and affects the functionality of PoE line cards
Last Reply 2 months 3 weeks ago.
8160
0.0
1 TCC_2
Password Recovery on Cisco Catalyst 3850
Last Reply 2 months 3 weeks ago.
3628
0.0
3 Collin Clark
Configuring a router Eth int or SVI to be a DHCP client
Last Reply 2 months 3 weeks ago.
4533
4.0
0 TCC_2
The card in a fixed hardware configuration Cat chassis functions improperly, not online
Last Reply 2 months 3 weeks ago.
634
0.0
0 TCC_2
How to configure a Flex Link for link-level redundancy in Cat switches that run IOS
Last Reply 2 months 3 weeks ago.
11462
0.0
0 TCC_2
Filter Results
Subject Views Rating Comments Author
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 weeks 4 days ago.
25748
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 6 months 17 hours ago.
19842
4.6
12 jakula
blog License Activation on 4500
Last Reply 9 months 2 weeks ago.
331
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 9 months 2 weeks ago.
7306
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 1 week ago.
2444
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 1 week ago.
18029
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 1 month ago.
47035
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 1 year 2 months ago.
6466
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 1 year 2 months ago.
394
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 2 months ago.
9
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 1 year 2 months ago.
119
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 3 months ago.
377
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 3 months ago.
1407
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 3 months ago.
756
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 3 months ago.
115
5.0
0 jakula
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 4 months ago.
8210
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 4 months ago.
289
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 4 months ago.
7046
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 7 months ago.
514
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 11 months ago.
2006
4.7
1 Anand G
blog Parity Error.
Last Reply 2 years 3 days ago.
2363
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 2 years 3 weeks ago.
16580
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 8 months ago.
4373
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 9 months ago.
5906
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 2 weeks ago.
11072
5.0
7 pnagpal
Filter Results
LAN, Switching and Routing
Views: 1016
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 1199
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 754
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 15662
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.8 (4 ratings)
LAN, Switching and Routing
Views: 315
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 388
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
LAN, Switching and Routing
Views: 211
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 210
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 513
  • 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: 43
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 35
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 411
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 652
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 373
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (3 ratings)
by rucjain
LAN, Switching and Routing
Views: 375
  • 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: 323
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
LAN, Switching and Routing
Views: 225
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Filter Results

Events

May 11
Ask the Expert
April 13
Ask the Expert
January 5
Ask the Expert
August 15, 2014
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
October 21, 2013
Ask the Expert
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

 
 

Featured Content

Popular Discussions

Popular Documents

Rank Username Points
1 17,555
2 9,886
3 8,217
4 8,203
5 8,159
Rank Username Points
249
121
115
103
97