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, assume there is a multicast sender, and this traffic is supposed to be received to 10 receivers only in order to prevent un-authorized IPs fro...
47 min 9 sec ago
Hi all, Does any one know where i can find the lastest ios that cisco as published for catalyst 2948G . Thanks Patcbr600
1 hour 8 min ago
I have a current situation where I need to add a subnet. I have created a secondary IP (192.168.101.253). Hosts on the primary (192.168.1.0) can se...
1 hour 9 min ago
Hello Is ospfv3   ipv4  address family available on the Nexus 9k - I can configure it on a Cisco ASR but the command in not available on the Nexus...
3 hours 10 min ago
Hi all ,  I just configured the the ICMP-Jitter in my Cisco switch .. My problem i can't set the size of packet .. So is there any way to add size...
5 hours 26 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 Switch C2960-48PST-S auto power off
Last Reply 2 min 34 sec ago.
0 0 0 0 beauline89
discussion Catalyst 3750 QoS Question
Last Reply 33 min 39 sec ago.
9 0 0 2 Jeffrey Pouzar
discussion Splitting 6248-Fabric-Interconnect from Nexus 5k to 4500X - QoS Question
Last Reply 46 min 43 sec ago.
19 0 5 3 Paul Chapman
discussion 4510R+E VSS IOS Upgrade
Last Reply 1 hour 44 min ago.
31 0 5 9 Leo Laohoo
discussion Cisco Wred to be used when bw threshold occurs
Last Reply 1 hour 48 min ago.
5 0 0 3 Joseph W. Doherty
discussion Disable Inter-VLAN Communication
Last Reply 1 hour 49 min ago.
4 0 0 1 Carlos Villagran
discussion Cat3550 w/ VACL impedes throughput by 90%
Last Reply 1 hour 51 min ago.
0 0 0 0 tleding
discussion how to prioritize dscp packets entering my network
Last Reply 2 hours 40 min ago.
3 0 0 1 Carlos Villagran
discussion Inline powered WAP connected to an SFP module
Last Reply 4 hours 14 min ago.
3 0 0 2 RickGiles
discussion 2 Lan 2 Wan..... problem.
Last Reply 4 hours 59 min ago.
90 0 0 16 erdosain99
discussion Setting Up Netflow on Internet Router
Last Reply 5 hours 26 min ago.
73 0 0 5 Richard Burts
discussion Power Bad issue on switch 3850
Last Reply 5 hours 41 min ago.
0 0 0 1 Reza Sharifi
discussion Registry value issue
Last Reply 6 hours 31 min ago.
0 0 3 10 Mohammed Saleem
discussion InterVLAN Routing in REP ring with 3750X Stack collapsed core/distribution
Last Reply 6 hours 41 min ago.
0 0 0 0 Mark Wardle
discussion udld fail ?
Last Reply 6 hours 47 min ago.
22 0 0 7 Carlos Villagran
discussion Registry issue Catalyst 4500x
Last Reply 7 hours 47 min ago.
200 0 5 10 Mohammed Saleem
discussion Port Usage for 3850 stack 03.06.03E cat3k_caa-universalk9
Last Reply 8 hours 57 min ago.
0 0 0 1 Paul Chapman
discussion Cisco Router 2801 - Problema con el puerto consola
Last Reply 9 hours 14 min ago.
0 0 0 0 [email protected]...
discussion HSRP with Inter-vlan
Last Reply 9 hours 31 min ago.
3 0 5 5 Carlos Villagran
discussion Preparing two 6800 switches for VSS
Last Reply 9 hours 39 min ago.
3 0 0 1 mark malone
discussion Cisco 3560 connection to internet
Last Reply 10 hours 8 min ago.
8 0 0 1 Richard Burts
discussion Cisco 7960 IP Phone registers, but doesn't receive a number
Last Reply 10 hours 59 min ago.
6 0 0 1 zdesignstudio
discussion used no login local command /cant login on router now
Last Reply 11 hours 6 sec ago.
0 0 0 1 mark malone
discussion VSS linking to 2 stacks
Last Reply 11 hours 13 min ago.
16 0 0 7 Palmieri.6
discussion ip directed-broadcast over GRE?
Last Reply 11 hours 16 min ago.
35 0 0 9 Richard Burts
Filter Results
Subject Views Rating Comments Author
Importance of BPDU Guard and BPDU Filter !!
Last Reply 4 days 19 hours ago.
144594
4.7
14 Ganesh Hariharan
Nexus - vPC Recommendations
Last Reply 6 days 9 hours ago.
28405
5.0
6 pnagpal
Troubleshooting tips for 3750X Stack power feature
Last Reply 1 week 4 days ago.
19798
4.3
6 pnagpal
Webcast Slides: Cisco Catalyst 2960-X and 2960-XR Series Switches Overview, Configuration,
Last Reply 2 weeks 1 day ago.
115
5.0
0 roor
Webcast FAQs: Catalyst 2960X & 2960XR Switches Overview, Configuration and Troubleshooting
Last Reply 2 weeks 1 day ago.
0
0.0
0 roor
DHCP listener
Last Reply 2 weeks 3 days ago.
0
0.0
0 netbeginner
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 2 weeks 3 days ago.
16063
5.0
18 Furose M
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 2 weeks 4 days ago.
61184
5.0
15 SunilKhanna
How to use Time-Domain Reflectometer (TDR)
Last Reply 2 weeks 4 days ago.
101216
5.0
93 Leo Laohoo
virtual switching system (vss) español
Last Reply 3 weeks 1 day ago.
4
0.0
0 jmp780718
CCNP Switching Notes Español
Last Reply 3 weeks 1 day ago.
5
0.0
0 jmp780718
Easy Traffic Generator (Works with GNS3)
Last Reply 3 weeks 4 days ago.
0
0.0
0 Carlos Villagran
NXOS Log Finder Tool for Nexus Switches
Last Reply 3 weeks 5 days ago.
53
4.5
0 aeguiart
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 3 weeks 6 days ago.
315060
5.0
46 plumbis
Changing a Switch Member Number in a 3850 Stack
Last Reply 4 weeks 22 hours ago.
0
0.0
0 Carlos Villagran
Catalyst 4500 CPU Packet Buffer Parser
Last Reply 1 month 1 day ago.
3
0.0
0 aeguiart
Cisco CatOS vs. IOS Commands
Last Reply 1 month 5 days ago.
1
0.0
0 Daniel Vieceli
Route to Host Stuck on Switch
Last Reply 1 month 1 week ago.
3403
5.0
5 Adrian Martinez
What’s New on Cisco Catalyst 6500 Series? - FAQ from Live Webcast
Last Reply 1 month 2 weeks ago.
306
0.0
1 ashirkar
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 month 2 weeks ago.
2535
5.0
4 Luis Villanueva Brito
Recognize the purpose & functions of various network devices:Router, Switch, Hub & Bridge.
Last Reply 1 month 2 weeks 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 3 weeks ago.
214153
5.0
14 tahirshabbir
3850: Understanding interface configuration on NM modules
Last Reply 1 month 3 weeks ago.
40120
5.0
16 Richard Primm
LICENSING on 2900/3500/3700
Last Reply 1 month 3 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 1 week ago.
20
0.0
3 mohdayaz1981
Filter Results
Subject Views Rating Comments Author
blog SWITCH configuration
Last Reply 3 weeks 2 days ago.
19
0.0
0 julius78_baclaan1
blog IPv6 for future CCNAs (+) – Final Part.
Last Reply 1 month 6 hours ago.
141
0.0
0 Gerald C. Paciello
blog Catalyst 3850 and 4500 compatibility with power supply Phase-phase in IT mode
Last Reply 1 month 1 day ago.
9
0.0
0
blog Catalyst 3850 and 4500 compatibility with power supply Phase-phase in IT mode
Last Reply 1 month 1 day ago.
4
0.0
0
blog Loading an IOS on a switch via Xmodem
Last Reply 1 month 4 days ago.
79449
5.0
18 Aninda Chatterjee
blog How would a multicast be delivered with incongruent IP/MAC addressing?
Last Reply 1 month 1 week ago.
240
5.0
4 Peter Paluch
blog IPv6 for future CCNAs – Part II
Last Reply 1 month 1 week ago.
235
5.0
0 Gerald C. Paciello
blog IPv6 for future CCNAs – Part I
Last Reply 1 month 1 week ago.
353
4.0
1 Gerald C. Paciello
blog Spanning Tree Protocol, from a feature CCNA´s Perspective, by Gerald C. Paciello
Last Reply 1 month 3 weeks ago.
924
5.0
0 Gerald C. Paciello
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 5 months 3 weeks ago.
28680
4.7
13 Akula Jyoti Lakshmi
blog Collector Security
Last Reply 6 months 2 weeks ago.
27
0.0
0 marobbs
blog Who Should Attend The Kickoff Meeting?
Last Reply 6 months 3 weeks ago.
58
0.0
0 marobbs
blog Network Optimization: The 90-Day Plan
Last Reply 7 months 1 day ago.
76
0.0
0 marobbs
blog Prepare for the Collector
Last Reply 7 months 2 weeks ago.
61
0.0
0 marobbs
blog Expert Insights: Network Optimization
Last Reply 7 months 2 weeks ago.
61
0.0
0 marobbs
blog Network Compliance Analysis
Last Reply 7 months 2 weeks ago.
57
0.0
0 marobbs
blog Three Tips for a Successful Review Period
Last Reply 7 months 2 weeks ago.
53
0.0
0 marobbs
blog Nexus 7000 ACL logging (OAL)
Last Reply 7 months 3 weeks ago.
19886
5.0
8 Robert Taylor
blog Active /Active Internet Load balancing with High availability ( AS Prepend Path)
Last Reply 8 months 1 day ago.
270
5.0
0 Ganesh Hariharan
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 10 months 4 weeks ago.
30034
5.0
1 Shashank Singh
blog License Activation on 4500
Last Reply 1 year 7 months ago.
1149
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 1 year 7 months ago.
7969
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 10 months ago.
3373
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 10 months ago.
24939
5.0
3 ajaju
blog Configuring a frame-relay switch
Last Reply 2 years 1 week ago.
8844
5.0
7 Aninda Chatterjee
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