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! I'm having an issue with my 4510R-E. It hasn't effected services (yet), but I'm concerned. I've been reading through the docs but can't seem t...
5 hours 18 min ago
I am trying to configure a floating route but an aggregate route already exist in the routing table.  As such the floating route is more specific a...
15 hours 46 min ago
Hi team !I'm trying to get the CPU Utilization of my SG220-50 50-Port Gigabit Smart Plus Switch : I downloaded the correct MIB directly from CISCO...
19 hours 26 min ago
Hello, We use a lot of WS-2960-48TT-L, and since the ip http secure-server + ISE implementation, we have a lot of crash. In 1 month, i replaced 7-...
21 hours 16 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6724 569 6 1 0
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Subject Views Votes Rating Replies Last replied by
discussion Using GLC-T modules in SFP+ ports
Last Reply 1 min 39 sec ago.
0 0 0 0 Luxoft Professional
discussion Catalyst C3550-24 power faulty
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17 0 0 4 Furose M
discussion unstacking C3850 switch issue
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discussion Etherchannel hash / bit-buckets and load balancing across member ports
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1138 1 5 8 Iulian Vaideanu
discussion VLAN 20 doesn't exists but it shows it does
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12 0 0 4 Furose M
discussion REP convergence failure
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0 0 0 1 Furose M
discussion WS-C3750V2-24TS-S
Last Reply 52 min 20 sec ago.
6 0 0 2 Furose M
discussion Need help in configuring Switching and Routing on Cisco 1812
Last Reply 1 hour 7 min ago.
9 0 0 2 srinivas.tammali
discussion switch troubleshootin
Last Reply 1 hour 11 min ago.
4 0 5 1 mark malone
discussion Dynamic ARP Inspection: no binding on interface
Last Reply 1 hour 11 min ago.
2879 0 3 22 dotansplus
discussion Dual wan 1801
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0 0 0 1 mark malone
discussion Help!!! Multicasting Issue
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55 0 4 12 paul driver
discussion Replacing VG224 in Cisco Unified Call Manager (CUCM)
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29 0 0 5 saif musa
discussion Auto Smartport Macro execution via Cisco ACS
Last Reply 2 hours 15 min ago.
19 0 0 3 isaacalves27
discussion Connect Fiber from MediaConverter directly to GLC-SX
Last Reply 2 hours 50 min ago.
0 0 0 1 Bhishma Khanna
discussion MAC address table size
Last Reply 2 hours 56 min ago.
3 0 0 1 mark malone
discussion How to filter certain logs?
Last Reply 3 hours 30 min ago.
10 0 0 4 mark malone
discussion USB Console Driver for ISR4331
Last Reply 3 hours 31 min ago.
8 0 5 3 Leo Laohoo
discussion Cisco 3850-stack gratuitous ARP issue
Last Reply 4 hours 21 min ago.
39 0 0 2 jacobmalling
discussion WS-C3850-48T %IOSXE-3-PLATFORM: 1 process kernel: EXT2-fs error
Last Reply 5 hours 1 min ago.
1 0 0 2 hotshin03
discussion Cisco 3850 XE Queue buffer
Last Reply 5 hours 58 min ago.
11 0 0 1 Furose M
discussion Subnet Design for 1 to 1 Initiative
Last Reply 6 hours 43 min ago.
2 0 0 2 InayathUlla Sharieff
discussion Support to VLAN Interface on Cisco 300 Series Small Business
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1 0 0 1 Reza Sharifi
discussion GLBP issue with Linux hosts
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4 0 0 1 Bhishma Khanna
discussion LED is blinking green
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36 0 0 6 seonmyeong kim
Filter Results
Subject Views Rating Comments Author
Troubleshooting tips for 3750X Stack power feature
Last Reply 4 days 14 hours ago.
19798
4.3
6 pnagpal
Webcast Slides: Cisco Catalyst 2960-X and 2960-XR Series Switches Overview, Configuration,
Last Reply 1 week 16 hours ago.
115
5.0
0 roor
Webcast FAQs: Catalyst 2960X & 2960XR Switches Overview, Configuration and Troubleshooting
Last Reply 1 week 16 hours ago.
0
0.0
0 roor
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 week 2 days ago.
140183
4.7
13 Ganesh Hariharan
DHCP listener
Last Reply 1 week 2 days ago.
0
0.0
0 netbeginner
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 1 week 3 days ago.
16063
5.0
18 Furose M
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 week 3 days ago.
61184
5.0
15 SunilKhanna
How to use Time-Domain Reflectometer (TDR)
Last Reply 1 week 4 days ago.
101216
5.0
93 Leo Laohoo
virtual switching system (vss) español
Last Reply 2 weeks 18 hours ago.
4
0.0
0 jmp780718
CCNP Switching Notes Español
Last Reply 2 weeks 18 hours ago.
5
0.0
0 jmp780718
Easy Traffic Generator (Works with GNS3)
Last Reply 2 weeks 4 days ago.
0
0.0
0 Carlos Villagran
NXOS Log Finder Tool for Nexus Switches
Last Reply 2 weeks 4 days ago.
53
4.5
0 aeguiart
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 2 weeks 5 days ago.
315060
5.0
46 plumbis
Changing a Switch Member Number in a 3850 Stack
Last Reply 3 weeks 14 hours ago.
0
0.0
0 Carlos Villagran
Catalyst 4500 CPU Packet Buffer Parser
Last Reply 3 weeks 3 days ago.
3
0.0
0 aeguiart
Cisco CatOS vs. IOS Commands
Last Reply 3 weeks 6 days ago.
1
0.0
0 Daniel Vieceli
Route to Host Stuck on Switch
Last Reply 4 weeks 1 day ago.
3403
5.0
5 Adrian Martinez
Nexus - vPC Recommendations
Last Reply 1 month 1 week ago.
28405
5.0
5 pnagpal
What’s New on Cisco Catalyst 6500 Series? - FAQ from Live Webcast
Last Reply 1 month 1 week ago.
306
0.0
1 ashirkar
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 month 1 week ago.
2535
5.0
4 Luis Villanueva Brito
Recognize the purpose & functions of various network devices:Router, Switch, Hub & Bridge.
Last Reply 1 month 1 week ago.
40
0.0
0 Gerald C. Paciello
What is the difference between an IP base image and an IP services image
Last Reply 1 month 2 weeks ago.
214153
5.0
14 tahirshabbir
3850: Understanding interface configuration on NM modules
Last Reply 1 month 2 weeks ago.
40120
5.0
16 Richard Primm
LICENSING on 2900/3500/3700
Last Reply 1 month 2 weeks ago.
23209
0.0
5 ranraju
Does cisco 2921 ip base supports nat and static route ....can any one please advise
Last Reply 2 months 5 days ago.
20
0.0
3 mohdayaz1981
Filter Results
Subject Views Rating Comments Author
blog SWITCH configuration
Last Reply 2 weeks 3 days ago.
14
0.0
0 julius78_baclaan1
blog IPv6 for future CCNAs (+) – Final Part.
Last Reply 3 weeks 2 days ago.
138
0.0
0 Gerald C. Paciello
blog Catalyst 3850 and 4500 compatibility with power supply Phase-phase in IT mode
Last Reply 3 weeks 3 days ago.
9
0.0
0
blog Catalyst 3850 and 4500 compatibility with power supply Phase-phase in IT mode
Last Reply 3 weeks 3 days ago.
5
0.0
0
blog Loading an IOS on a switch via Xmodem
Last Reply 3 weeks 6 days ago.
78658
5.0
18 Aninda Chatterjee
blog How would a multicast be delivered with incongruent IP/MAC addressing?
Last Reply 1 month 8 hours ago.
232
5.0
4 Peter Paluch
blog IPv6 for future CCNAs – Part II
Last Reply 1 month 22 hours ago.
229
5.0
0 Gerald C. Paciello
blog IPv6 for future CCNAs – Part I
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350
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1 Gerald C. Paciello
blog Spanning Tree Protocol, from a feature CCNA´s Perspective, by Gerald C. Paciello
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904
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0 Gerald C. Paciello
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
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blog Collector Security
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blog Network Compliance Analysis
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blog Three Tips for a Successful Review Period
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blog Nexus 7000 ACL logging (OAL)
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blog Active /Active Internet Load balancing with High availability ( AS Prepend Path)
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blog Output drops due to QoS on 2960/3560/3750 switches
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29960
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1 Shashank Singh
blog License Activation on 4500
Last Reply 1 year 7 months ago.
1124
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blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 1 year 7 months ago.
7956
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7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 10 months ago.
3353
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blog Booting Cisco Router from a TFTP server
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blog Configuring a frame-relay switch
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8790
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7 Aninda Chatterjee
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