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.

I am looking for the rack mount part number for a WS-C3750G-24WS-S25. This switch has the built in wireless lan controller and is 2U. I have only b...
5 hours 16 min ago
Hi, I have recentrecently deployed 3 Cisco SG220-26P switches which are located in 3 separate blogs (fiber connected) and having issues (not sure i...
5 hours 59 min ago
Hi, I have problem with my configuration on my router my ISP provider just gave me the Public IP and i already configured it to my router and I can...
by dudz
6 hours 22 min ago
I have a few Access Points (541N-A-k9) at a customer's site and they just purchased about 60 HP Stream Laptops. (not including other laptops and iP...
12 hours 19 min ago
dear Collegues,could you please say why i get Access-Reject when i trying to authenticate/authorise in Switch with using Domain user account from A...
1 day 12 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 DHCP Redundancy
Last Reply 35 sec ago.
0 0 0 2 Karsten Iwen
discussion [Solved] Catalyst C2960s reboot
Last Reply 10 min 56 sec ago.
113 0 5 20 Xavier RICOL
discussion WCCP command not accepted on 3750 switch
Last Reply 12 min 35 sec ago.
7 0 0 3 mark malone
discussion Router throughput Cisco 867vae vs ISP provided router
Last Reply 1 hour 2 min ago.
108 0 5 11 franklinb
discussion SSH connection fails - server refused authentication protocol
Last Reply 1 hour 38 min ago.
6953 0 5 22 milestone1300
discussion QoS for home use
Last Reply 2 hours 23 min ago.
38 0 0 6 Anthony Brandelli
discussion Nexus QSFP N55-MQ4 compatibile with QSFP-40G-SR-BD
Last Reply 3 hours 24 min ago.
8 0 0 7 will@bootit.com
discussion I am not clear on the difference between ipv4 and vpnv4 address family concept...Please can anyone clear this Doubt
Last Reply 3 hours 52 min ago.
2960 1 4 7 Lorenzo Tating
discussion Rackmount kit for C3750G-24WS-S25
Last Reply 5 hours 16 min ago.
0 0 0 0 jsachnet1
discussion Only 1 port does not support speed 1g connection on C2960G switch.
Last Reply 5 hours 17 min ago.
61 0 0 13 masoowo@naver.com
discussion Deployed Cisco SG220-26P in K-8 school having issues.
Last Reply 5 hours 59 min ago.
0 0 0 0 wmlarkin1
discussion How to configure CISCO Router as Internet gateway
Last Reply 6 hours 21 min ago.
0 0 0 0 dudz
discussion can HRSP / VRRP be use in the such setup ?
Last Reply 7 hours 3 min ago.
17 0 5 4 Reza Sharifi
discussion UC540W-FXO-K9
Last Reply 7 hours 26 min ago.
3 0 0 1 acampbell
discussion Trying to reach global ip address, from within VRF.
Last Reply 7 hours 33 min ago.
11 0 0 3 simongillard1
discussion 2960x qos to limit port-bandwidth
Last Reply 7 hours 38 min ago.
4 0 0 1 acampbell
discussion Experincing issues with 2960X switch
Last Reply 7 hours 48 min ago.
27852 14 5.16667 65 Mike Pavlovich
discussion GLBP with PBR
Last Reply 8 hours 43 min ago.
9 0 0 6 johnnylingo
discussion replacement for cisco 2621 router
Last Reply 10 hours 13 min ago.
5 0 0 2 Karsten Iwen
discussion Local DNS on Cisco router
Last Reply 10 hours 29 min ago.
3 0 0 2 Karsten Iwen
discussion 3560 Switch IOS upgrade issue md5
Last Reply 11 hours 4 min ago.
0 0 0 1 Peter Paluch
discussion Telnet to Router on port 9130
Last Reply 11 hours 47 min ago.
25 0 0 2 Scott Eddy
discussion switch behaviour on multicast packet
Last Reply 11 hours 55 min ago.
5 0 0 1 Jon Marshall
discussion Help with Traffic Routes
Last Reply 12 hours 2 min ago.
30 0 0 9 Jon Marshall
discussion AP541N-A-k9 Limitations on the amount of devices that can connect
Last Reply 12 hours 19 min ago.
0 0 0 0 twachenfeld1
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 1 day 18 hours ago.
18681
0.0
2 TCC_2
%C4K_SUPERVISOR-2-SOFTERROR / %C4K_SUPERVISOR-2-FPGASOFTERROR
Last Reply 4 days 15 hours ago.
2
0.0
0 InayathUlla Sharieff
Egress QOS
Last Reply 4 days 16 hours ago.
53725
5.0
14 somgupta
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 14 hours ago.
51785
4.6
7 Thamaraiselvam Santhanam
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 week 4 days ago.
104
0.0
0 Luis Villanueva Brito
Properly Installing Cisco USB Console Driver
Last Reply 1 week 6 days ago.
109
0.0
1 lsgabrillo
How to define the VLANs allowed on a trunk link
Last Reply 2 weeks 1 day ago.
187991
5.0
3 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 3 weeks 3 days ago.
125038
4.7
53
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 3 weeks 3 days ago.
6083
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 3 days ago.
13780
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 month 4 days ago.
60
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 month 1 week ago.
21535
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.
151
0.0
0 Shaun Hummel
Cisco 891 fresh configuration/management without console cable
Last Reply 2 months 2 weeks ago.
33
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 months 2 weeks 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 3 months 3 hours ago.
26776
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 3 months 15 hours 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 3 days ago.
4213
0.0
0 TCC_2
3850 Boot Mode
Last Reply 3 months 5 days ago.
1796
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 3 months 1 week ago.
19219
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 day 13 hours ago.
50184
5.0
8 Aninda Chatterjee
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 2 months 1 day ago.
26212
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 7 months 6 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 9 months ago.
514
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 2 years 2 weeks 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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