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
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion Creating a WiFi hotspot
Last Reply 9 min 52 sec ago.
10 0 0 3 buzzhani1
discussion 3750X/3850 Microcode Updates
Last Reply 17 min 42 sec ago.
11 0 0 3 johnd2310
discussion ipv6 between Cisco 1841 & Cisco 1811
Last Reply 1 hour 23 min ago.
9 0 0 1 Philip D'Ath
discussion CISCO1941/K9 Vs CISCO2951/K9
Last Reply 2 hours 53 min ago.
15 0 5 13 Leo Laohoo
discussion 3850 stack with data broadcast to all ports
Last Reply 4 hours 25 sec ago.
1 0 0 1 Carlos Villagran
discussion Cisco Catalyst 2948G Lastest IOS
Last Reply 4 hours 40 min ago.
3 0 0 2 Deepak Kumar
discussion Interfaces on a SG500 goes up and down
Last Reply 5 hours 49 min ago.
205 2 0 5 pwwiddicombe
discussion Secondary IP network doesnt appear to be routing
Last Reply 6 hours 36 min ago.
4 0 0 3 Richard Burts
discussion No DHCP crossing over trunk
Last Reply 6 hours 37 min ago.
11 0 0 8 ChristopheVL
discussion EIGRP - switch acting like stub, but is not stub.
Last Reply 6 hours 39 min ago.
48 0 0 17 Jason Vanlandingham
discussion Packet size setting
Last Reply 7 hours 12 min ago.
11 0 0 1 Tareq Emad Al Asfoor
discussion Does LACP or PAGP Aggregate bandwidth
Last Reply 7 hours 20 min ago.
6 0 5 4 Reza Sharifi
discussion Cisco Switches – Trunk & DHCP Spoofing
Last Reply 7 hours 42 min ago.
0 0 5 4 OLE DREWS JENSEN
discussion Relatime Power Consumption Cisco Switch WS-C3850-48T
Last Reply 8 hours 27 min ago.
7 0 0 3 Philip D'Ath
discussion how to limit receivers number in multicast !??
Last Reply 8 hours 29 min ago.
0 0 0 0 mohammed hashim
discussion 13017 Received TACACS+ packet from unknown Network Device or AAA Client
Last Reply 8 hours 55 min ago.
1485 0 0 11 Richard Burts
discussion Route Filtering and Redistribution in OSPF in Nexus 7K
Last Reply 9 hours 49 min ago.
5 0 0 1 supportlan
discussion Nexus 9k ospfv3 address family ipv4
Last Reply 10 hours 52 min ago.
0 0 0 0 mark.cronin
discussion ip directed-broadcast over GRE?
Last Reply 11 hours 18 min ago.
10 0 0 2 Richard Burts
discussion DMVPN - configure QoS between Spoke and Hub
Last Reply 11 hours 38 min ago.
25 0 0 6 Tim Y
discussion Finding an issue inside the same vlan
Last Reply 11 hours 55 min ago.
12 0 5 4 glen.grant
discussion 2 Lan 2 Wan..... problem.
Last Reply 12 hours 3 min ago.
78 0 0 13 mark malone
discussion Replacing VG224 in Cisco Unified Call Manager (CUCM)
Last Reply 13 hours 44 min ago.
43 0 5 10 Yahya Lababidi
discussion How do i make Windows DHCP work with VLANs
Last Reply 14 hours 4 min ago.
18891 0 5 8 balmathhaji
discussion interface Output drops. Lan users complain about latency.
Last Reply 15 hours 23 min ago.
72 0 5 17 mark malone
Filter Results
Subject Views Rating Comments Author
Importance of BPDU Guard and BPDU Filter !!
Last Reply 13 min 22 sec ago.
144594
4.7
14 Ganesh Hariharan
Nexus - vPC Recommendations
Last Reply 1 day 14 hours ago.
28405
5.0
6 pnagpal
Troubleshooting tips for 3750X Stack power feature
Last Reply 1 week 3 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 2 hours ago.
0
0.0
0 Carlos Villagran
NXOS Log Finder Tool for Nexus Switches
Last Reply 3 weeks 5 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 7 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
Filter Results
by roor
LAN, Switching and Routing
Views: 378
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 23783
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.8 (4 ratings)
LAN, Switching and Routing
Views: 54
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 1449
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 1369
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 964
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 427
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 456
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4 (1 ratings)
LAN, Switching and Routing
Views: 277
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 287
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 716
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
LAN, Switching and Routing
Views: 8
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 59
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 41
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 436
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 745
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 535
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (4 ratings)
LAN, Switching and Routing
Views: 491
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (4 ratings)
LAN, Switching and Routing
Views: 15
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
LAN, Switching and Routing
Views: 357
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
LAN, Switching and Routing
Views: 230
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Filter Results

This Month

Events

April 18
Ask the Expert
January 25
Ask the Expert
October 4, 2015
Ask the Expert
September 7, 2015
Ask the Expert
May 11, 2015
Ask the Expert
April 13, 2015
Ask the Expert
January 5, 2015
Ask the Expert
July 21, 2014
Ask the Expert
March 31, 2014
Ask the Expert
April 1, 2014
Webcasts
March 10, 2014
Webcasts
  • 1
  • 2
  • 3
  • 4
  • 5
December 12, 2012
Techtalks
  • 1
  • 2
  • 3
  • 4
  • 5
July 30, 2012
Ask the Expert
October 21, 2013
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
August 29, 2011
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
July 27, 2012
Facebook Forums
  • 1
  • 2
  • 3
  • 4
  • 5
December 31, 1969
Facebook Forums
May 21, 2012
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5
March 12, 2012
Ask the Expert
  • 1
  • 2
  • 3
  • 4
  • 5

Announcements

Actions

 
 

Popular Discussions

Popular Documents

Rank Username Points
1 18,800
2 10,783
3 9,354
4 8,675
5 8,290
Rank Username Points
222
162
73
70
65