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 MLS QoS
Last Reply 1 min 54 sec ago.
17 0 0 3 Joseph W. Doherty
discussion Etherchannel on ASR
Last Reply 7 min 41 sec ago.
0 0 0 0 nabeelcse07
discussion Cisco Wred to be used when bw threshold occurs
Last Reply 11 min 14 sec ago.
5 0 0 2 Ahmed M Alzaeem
discussion Stack cable replacement
Last Reply 13 min 5 sec ago.
10 0 0 3 rickybroomfield
discussion Rate limiting - Input and output on physical interface
Last Reply 37 min 59 sec ago.
0 0 0 1 Joseph W. Doherty
discussion shaping the real time traffic
Last Reply 40 min 34 sec ago.
17 0 5 4 Joseph W. Doherty
discussion Cisco-Juniper Ping Problem
Last Reply 57 min 58 sec ago.
2 0 0 4 itatdanagas
discussion Configuration on cisco 1924 switch.
Last Reply 1 hour 11 min ago.
22 0 5 7 jarar_m01
discussion Cisco 3560 connection to internet
Last Reply 1 hour 30 min ago.
0 0 0 0 amidoufloriantoure1
discussion enable interface
Last Reply 1 hour 52 min ago.
8 0 0 4 amrelquasaby
discussion 2 Lan 2 Wan..... problem.
Last Reply 2 hours 35 min ago.
90 0 0 15 mark malone
discussion Does BPDU has any Ethertype or it is a Layer 2 or any explanation
Last Reply 2 hours 54 min ago.
0 0 0 0 ShaiqRasool
discussion Using DTP on a port-channel
Last Reply 2 hours 58 min ago.
10 0 0 4 Jeremy DUBRULLE
discussion 4510R+E VSS IOS Upgrade
Last Reply 3 hours 3 min ago.
15 0 5 6 Carlos Aguinaldo
discussion Setting Up Netflow on Internet Router
Last Reply 3 hours 48 min ago.
68 0 0 4 edgar_pascal
discussion Not getting netflow from router 2921 through the firewall
Last Reply 4 hours 2 min ago.
3 0 0 2 edgar_pascal
discussion VRRP configuration
Last Reply 4 hours 26 min ago.
44 0 0 11 mark malone
discussion NTP Invalid insane
Last Reply 4 hours 42 min ago.
27 0 0 1 Philip D'Ath
discussion Cisco Catalyst 4003 does it have dual power capability?
Last Reply 4 hours 48 min ago.
0 0 0 2 engr.perez
discussion How to connect Nexus 2000 with MPO breakout cable
Last Reply 4 hours 57 min ago.
0 0 0 0 g8104
discussion CISCO C3750X DHCP issue
Last Reply 5 hours 7 min ago.
1 0 0 2 Vladimir Bednikov
discussion Cisco 3925 Power cutover one by one
Last Reply 5 hours 21 min ago.
0 0 0 4 Jerry Jiang
discussion Cisco 867VAE-K9 router rip
Last Reply 5 hours 26 min ago.
10 0 0 1 Philip D'Ath
discussion Dot1Q VLAN Tagging in WAN Circuit
Last Reply 5 hours 29 min ago.
2 0 0 1 Philip D'Ath
discussion dns lookups in guest vlans
Last Reply 8 hours 28 min ago.
20 0 0 5 jkay18041
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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