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 ipv6 between Cisco 1841 & Cisco 1811
Last Reply 2 min 16 sec ago.
13 0 0 6 Philip D'Ath
discussion Cannot ping vlan gateway on Nexus switches when trunking to access layer switch
Last Reply 4 min 55 sec ago.
7 0 5 4 dgso_admin
discussion Adding a physical device in a virtual design?
Last Reply 6 min 4 sec ago.
79 0 5 21 DAVIDsTEA_Inc
discussion Creating a WiFi hotspot
Last Reply 15 min 31 sec ago.
27 0 0 6 Philip D'Ath
discussion Unplug ALL headsets or phones won't power up?
Last Reply 30 min 25 sec ago.
48 1 0 7 Ed Simson
discussion ISL between 2960S and 2960X stacks
Last Reply 46 min 31 sec ago.
0 0 0 0 marcus.wiedemann
discussion shaping the real time traffic
Last Reply 58 min 31 sec ago.
1 0 5 2 Joseph W. Doherty
discussion Low Voltage Alarm on interfaces with specific SFPs.
Last Reply 58 min 36 sec ago.
0 0 0 2 Param_veer7
discussion WS-3560CX-8XPD-S Licensing Question
Last Reply 1 hour 10 min ago.
0 0 0 1 Reza Sharifi
discussion connecting my cisco 2950g switch to my wireless router
Last Reply 1 hour 18 min ago.
39 1 0 7 rmott19811
discussion Connect two networks with different subnets
Last Reply 1 hour 24 min ago.
3 0 0 4 Tim Y
discussion ARP ICMP
Last Reply 1 hour 44 min ago.
0 0 0 0 krramas2
discussion Finding an issue inside the same vlan
Last Reply 3 hours 9 min ago.
12 0 5 6 girchand
discussion Trouble with 2960X Stack IOS Upgrade
Last Reply 3 hours 13 min ago.
0 0 0 0 Terence Lockette
discussion Troubleshooting a switch to switch connection issue
Last Reply 3 hours 13 min ago.
18 0 0 11 Process153
discussion 3850 stack with data broadcast to all ports
Last Reply 3 hours 56 min ago.
10 0 0 5 Carlos Villagran
discussion packet tracer problem with three connected router
Last Reply 4 hours 33 min ago.
9 0 0 1 Borgenstrand
discussion No DHCP crossing over trunk
Last Reply 4 hours 45 min ago.
21 0 0 9 ChristopheVL
discussion Does LACP or PAGP Aggregate bandwidth
Last Reply 5 hours 2 min ago.
6 0 5 5 Joseph W. Doherty
discussion Cisco Nexus 5548UP upgrade fail - version 7.2
Last Reply 5 hours 8 min ago.
264 1 5 7 teracomcco
discussion ISP Handoff to 2950
Last Reply 5 hours 19 min ago.
58 0 0 7 [email protected]
discussion Is there a specific command to show the queue buffer size of one port-group on WS-X6904-40G?
Last Reply 5 hours 51 min ago.
2 0 0 1 Iulian Vaideanu
discussion Route Filtering and Redistribution in OSPF in Nexus 7K
Last Reply 6 hours 36 min ago.
10 0 0 3 supportlan
discussion Default Route
Last Reply 7 hours 49 min ago.
71 0 5 8 botelho.rocha1
discussion Nexus 7k SUP2 "Show Mac Address-table" doesnt display dynamic MACs
Last Reply 8 hours 14 min ago.
6 0 0 2 marioderosa2008
Filter Results
Subject Views Rating Comments Author
Importance of BPDU Guard and BPDU Filter !!
Last Reply 5 hours 15 min ago.
144594
4.7
14 Ganesh Hariharan
Nexus - vPC Recommendations
Last Reply 1 day 19 hours ago.
28405
5.0
6 pnagpal
Troubleshooting tips for 3750X Stack power feature
Last Reply 1 week 8 hours ago.
19798
4.3
6 pnagpal
Webcast Slides: Cisco Catalyst 2960-X and 2960-XR Series Switches Overview, Configuration,
Last Reply 1 week 3 days ago.
115
5.0
0 roor
Webcast FAQs: Catalyst 2960X & 2960XR Switches Overview, Configuration and Troubleshooting
Last Reply 1 week 3 days ago.
0
0.0
0 roor
DHCP listener
Last Reply 1 week 5 days ago.
0
0.0
0 netbeginner
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 1 week 5 days ago.
16063
5.0
18 Furose M
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 week 6 days ago.
61184
5.0
15 SunilKhanna
How to use Time-Domain Reflectometer (TDR)
Last Reply 1 week 6 days ago.
101216
5.0
93 Leo Laohoo
virtual switching system (vss) español
Last Reply 2 weeks 3 days ago.
4
0.0
0 jmp780718
CCNP Switching Notes Español
Last Reply 2 weeks 3 days ago.
5
0.0
0 jmp780718
Easy Traffic Generator (Works with GNS3)
Last Reply 3 weeks 7 hours ago.
0
0.0
0 Carlos Villagran
NXOS Log Finder Tool for Nexus Switches
Last Reply 3 weeks 10 hours ago.
53
4.5
0 aeguiart
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 3 weeks 1 day ago.
315060
5.0
46 plumbis
Changing a Switch Member Number in a 3850 Stack
Last Reply 3 weeks 3 days ago.
0
0.0
0 Carlos Villagran
Catalyst 4500 CPU Packet Buffer Parser
Last Reply 3 weeks 6 days ago.
3
0.0
0 aeguiart
Cisco CatOS vs. IOS Commands
Last Reply 1 month 12 hours ago.
1
0.0
0 Daniel Vieceli
Route to Host Stuck on Switch
Last Reply 1 month 2 days 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 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 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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