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.

Hellowe have N7k , IOS ver n7000-s2-dk9.6.2.12connected other port due to issued port down (2/6  --> 1/7)i want to know which problem following...
5 sec ago
We have the c3kx-nm10g module in a 3750 and are tying to use Cisco 10g-SFP-AOC3M Twinex cables, but the transceivers are not being recognied.. any...
4 hours 27 min ago
Hello,We had configured dot1x on ports of Switch ports with authentication host-mode multi-domain and ports were going to err-disabled mode.This wa...
1 day 12 hours ago
Hi Team, Please any one answer my  querry. I have 3vlans which was created in my Core switch.vlan 10 10.120.234.128/25vlan 20 10.120.232.0/26vlan 3...
1 day 15 hours ago
Cisco 3750 switch with vlan 5 setup for workstations and vlan 10 for Polycom VOIP phones. Each client interface is configured with switchport acces...
2 days 9 hours 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 Disabling R2D2 interrupt using EEM :5, r2d2_TMC_fatal_intr
Last Reply 5 sec ago.
0 0 0 0 cjm000001
discussion How many area can be configuration include one ospf process id?
Last Reply 7 min ago.
10 0 5 4 YongFeng He
discussion N7K switches
Last Reply 32 min ago.
2 0 0 2 fawad-alam
discussion Is it possible to connect switches together via a patch panel?
Last Reply 1 hour 41 min ago.
18 0 0 4 InayathUlla Sharieff
discussion 3750 high cpu utilization
Last Reply 1 hour 44 min ago.
18 0 0 2 InayathUlla Sharieff
discussion Only 1 port does not support speed 1g connection on C2960G switch.
Last Reply 2 hours 19 min ago.
35 0 0 5 masoowo@naver.com
discussion Module / Transceiver issue
Last Reply 4 hours 27 min ago.
0 0 0 0 Lewis Quin
discussion Trying to reach global ip address, from within VRF.
Last Reply 5 hours 1 min ago.
6 0 0 2 simongillard1
discussion SG500 Crash - VOIP phone need repatching to work?
Last Reply 6 hours 30 min ago.
16 0 0 4 Andy Roberts
discussion IP protocol is not to communicate between computers in a LAN. Is that true?
Last Reply 7 hours 22 min ago.
14 0 5 2 Muhammad Thanveer
discussion can HRSP / VRRP be use in the such setup ?
Last Reply 8 hours 6 min ago.
10 0 0 2 Cisco Freak
discussion network assessment and firewall selection
Last Reply 9 hours 51 min ago.
3 0 0 1 Reza Sharifi
discussion Virtual Switching System (VSS) Test on 4500-X
Last Reply 10 hours 20 min ago.
3 0 0 1 Reza Sharifi
discussion Cisco WS-C6509-E , Upgrade from SUP 720 to SUP 2T
Last Reply 10 hours 34 min ago.
12 0 0 1 Reza Sharifi
discussion moxa EDS-408a-MM-SC Cisco 3750X GLC-GE-100FX Slow Communication
Last Reply 19 hours 19 min ago.
151 0 0 1 jonathanvanderzee
discussion Cisco ASA static routing to Cisco 831. help with ACL maybe?
Last Reply 19 hours 45 min ago.
48 0 0 12 Mohammad Moghaddas
discussion Configuring a SM-X Layer 2/3 EtherSwitch Service Module on a 4331 router
Last Reply 23 hours 18 min ago.
407 1 5 5 pratikbhai patel
discussion QoS for home use
Last Reply 1 day 1 hour ago.
6 0 0 4 bayates826
discussion CCP Express won't install on my 1841
Last Reply 1 day 1 hour ago.
431 0 0 1 shadeofblkness
discussion Equivalent commands for ASR9k?
Last Reply 1 day 3 hours ago.
10 0 0 2 tinhnho123
discussion Catalyst 3750 Access List to prevent IP Stealing
Last Reply 1 day 4 hours ago.
91 0 5 15 smithster5683
discussion Dot1x with Multi-Domain vs Multi-Auth
Last Reply 1 day 12 hours ago.
2 0 0 0 CSCO11854658
discussion jarbled commands when transferring copied config from one switch to another
Last Reply 1 day 13 hours ago.
13 0 0 2 paul driver
discussion Are static routes redistributed into EIGRP also redistributed into BGP with "redistribute eigrp" command?
Last Reply 1 day 14 hours ago.
19 0 0 2 Mohammad Moghaddas
discussion WDS server Reachablilty
Last Reply 1 day 15 hours ago.
2 0 0 0 anirudh12b9
Filter Results
Subject Views Rating Comments Author
The "%SPANTREE-7-BLOCK_PORT_TYPE : Blocking [chars] on [chars]. Inconsistent port type" message is logged on Cisco Catalyst switches
Last Reply 2 min 29 sec ago.
18676
0.0
2 TCC_2
%C4K_SUPERVISOR-2-SOFTERROR / %C4K_SUPERVISOR-2-FPGASOFTERROR
Last Reply 2 days 20 hours ago.
2
0.0
0 InayathUlla Sharieff
Egress QOS
Last Reply 2 days 21 hours ago.
53703
5.0
14 somgupta
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 5 days 19 hours ago.
51746
4.6
7 Thamaraiselvam Santhanam
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 week 2 days ago.
103
0.0
0 Luis Villanueva Brito
Properly Installing Cisco USB Console Driver
Last Reply 1 week 4 days ago.
109
0.0
1 lsgabrillo
How to define the VLANs allowed on a trunk link
Last Reply 1 week 6 days ago.
187991
5.0
3 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 3 weeks 1 day ago.
50296
4.7
53
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 3 weeks 1 day ago.
6066
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 1 day ago.
13777
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 month 2 days ago.
57
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 month 1 week ago.
21518
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.
148
0.0
0 Shaun Hummel
Cisco 891 fresh configuration/management without console cable
Last Reply 2 months 1 week ago.
33
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 months 1 week ago.
147
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 months 2 weeks ago.
45
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.
45
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 2 months 4 weeks ago.
26723
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 2 months 4 weeks ago.
100784
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 3 months 2 days ago.
4213
0.0
0 TCC_2
3850 Boot Mode
Last Reply 3 months 3 days ago.
1793
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 3 months 5 days ago.
19208
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 3 months 1 week ago.
87
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 3 months 2 weeks ago.
54
0.0
0 josecesp
Filter Results
Subject Views Rating Comments Author
blog Loading an IOS on a switch via Xmodem
Last Reply 1 min 26 sec ago.
50184
5.0
8 Aninda Chatterjee
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 1 month 4 weeks ago.
26212
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 7 months 4 days ago.
20838
4.6
12 jakula
blog License Activation on 4500
Last Reply 10 months 2 weeks ago.
421
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 10 months 3 weeks ago.
7386
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 1 month ago.
2523
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 1 month ago.
18788
5.0
3 ajaju
blog Configuring a frame-relay switch
Last Reply 1 year 3 months ago.
6704
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.
129
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 1 year 4 months ago.
123
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 4 months ago.
404
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 4 months ago.
1434
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 4 months ago.
761
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 4 months ago.
129
5.0
0 jakula
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 5 months ago.
8312
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.
7841
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 8 months ago.
1980
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 2 years 1 week ago.
2070
4.7
1 Anand G
blog Parity Error.
Last Reply 2 years 1 month ago.
2397
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 2 years 1 month ago.
16998
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 9 months ago.
4424
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 10 months ago.
5922
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 1 month ago.
11401
5.0
7 pnagpal
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