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.

 

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I was not successful in finding out if Elam capture capabilities on Nexus 9396PQ. I see it supports Ethanalyzer but I need to see transit traffic a...
1 hour 39 min ago
Hello,I have a Cisco 2851 that I need to set up with 3 VLANs and a DMZ for an external public server. The internal clients also need access to the...
4 hours 17 min ago
HelloI'm looking to deploy 802.1x/mab on an Instant Access 1000 interface deployment. PACLs/dACLs will be used for security. Many of these ACLs wil...
8 hours 36 min ago
HelloI think normally Modular Qos Shaping feature should be configure into routed port, however if it is switched port. Is it possible?  Here is th...
15 hours 18 min ago
Hi, I have three vlans that would like to configure not to access each vlan users to other. VLan 116-117 users can't access to vlan 118 and vice ve...
15 hours 32 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6739 569 6 1 0
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discussion Nexus 55xx NX-OS upgrades without interruption
Last Reply 2 min 55 sec ago.
10 0 0.0 1 Leo Laohoo
discussion DHCP Snooping Issue
Last Reply 6 min 15 sec ago.
73 0 5 16 amikat
discussion Replace master switch in stack
Last Reply 9 min 27 sec ago.
12 0 0.0 1 Leo Laohoo
discussion Router-Switch
Last Reply 14 min 26 sec ago.
15 0 0.0 1 Leo Laohoo
discussion Macro Help for access point
Last Reply 15 min 12 sec ago.
6 0 0.0 1 Leo Laohoo
discussion Get P/N and S/N from All Switches in Company's Internal Network
Last Reply 1 hour 1 min ago.
12 0 0.0 1 Leo Laohoo
discussion Strange UDLD Issue
Last Reply 1 hour 6 min ago.
35 0 0.0 7 Leo Laohoo
discussion Elam capture capabilities on Nexus 9396PQ
Last Reply 1 hour 39 min ago.
0 0 0.0 0 Bedevere Curry
discussion vlan confusion
Last Reply 1 hour 56 min ago.
0 0 5 10 Jon Marshall
discussion vlan interface will not respond to ping
Last Reply 2 hours 2 min ago.
19 0 0.0 7 Jon Marshall
discussion Cant Telnet or SSH to switch
Last Reply 4 days 8 hours ago.
34 0 0.0 3 donmatlock1
discussion question regarding CPU processes
Last Reply 2 hours 46 min ago.
26 0 0.0 7 Russell Gibbons
discussion Problems with routing between VLAN's using a Catalyst 2960-X and RV325
Last Reply 2 hours 54 min ago.
88 0 5 9 olver.hernandez
discussion Etherchannel Simultaneous Primary and Sub-Interface Config
Last Reply 2 hours 49 min ago.
31 0 0.0 10 Jon Marshall
discussion What image can i upgrade to on a WS-C3560-48PS-S switch?
Last Reply 3 hours 34 min ago.
34 0 0.0 12 Joseph W. Doherty
discussion VSS 2 nos of 6506 Switches with dual SUP (VS-S720-10G-3C) Each, VSS Active switch restart itself when perform Active SUP failover
Last Reply 4 hours 5 min ago.
15 0 5 2 vishal agavane
discussion cisco c2960x-48Lps-L
Last Reply 4 hours 9 min ago.
13 0 0.0 3 Cindy Toy
discussion Router hardware for 3 VLAN's and a DMZ
Last Reply 4 hours 17 min ago.
7 0 0.0 0 triden001
discussion DMVPN backup to dark fiber
Last Reply 4 hours 35 min ago.
64 0 0.0 10 Nick Cutting
discussion Routing 2 subnets within a VLAN - Diagram Attached
Last Reply 5 hours 13 min ago.
0 0 5 14 Jon Marshall
discussion IOS Release 15.0.2-SE4 caveat related to aaa
Last Reply 5 hours 40 min ago.
19 0 0.0 3 rakeshvelagala
discussion IOS XE and aaa
Last Reply 6 hours 15 min ago.
5 0 0.0 4 richard.schultz1
discussion SM-ES3G-16-P
Last Reply 6 hours 30 min ago.
0 0 0.0 1 TheDukeofBaghdad
discussion Remove login message
Last Reply 7 hours 16 min ago.
9 0 0.0 1 Cisco Freak
Filter Results
Subject Views Rating Comments Author
Single-sided vs double-sided vpc
Last Reply 11 min 22 sec ago.
8525
3.7
11 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 2 years 5 months ago.
6777
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 3 years 2 months ago.
3640
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 3 years 4 months ago.
6983
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 3 years 7 months ago.
15
0.0
0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 year 4 weeks ago.
92897
4.0
1 Shaun Hummel
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 2 days ago.
53660
4.5
5 Thamaraiselvam Santhanam
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 5 days 20 hours ago.
39951
5.0
12 SunilKhanna
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 5 years 8 months ago.
392
0.0
0 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 3 weeks 3 days ago.
96179
4.7
47 ashirkar
example of Embedded Event Manager (EEM) on my 881W - to shut down a interface at 1am
Last Reply 3 weeks 4 days ago.
190
4.0
2 dshornstein
OSPF and IS-IS Differences
Last Reply 3 weeks 5 days ago.
3829
5.0
1 inderdeeps
Switch Fabric- Troubleshooting tips
Last Reply 3 years 3 months ago.
18319
5.0
2 pnagpal
The "%SW_DAI-4-DHCP_SNOOPING_DENY:" error message is received when configuring the dynamic ARP inspection in switches that run Cisco IOS Software
Last Reply 1 month 4 days ago.
21851
5.0
4 TCC_2
Troubleshooting tips for 3750X Stack power feature
Last Reply 1 month 1 week ago.
13081
4.0
5 pnagpal
ITD: Load Balancing, Traffic Steering & Clustering using Cisco switches
Last Reply 1 month 1 week ago.
55
5.0
0 expertadvisor20151
Configuring Microsoft NLB on Nexus 7000
Last Reply 1 month 1 week ago.
5111
5.0
2 mrabbi
OSPF Design Best Practices
Last Reply 1 month 1 week ago.
34810
0.0
2 pnagpal
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 month 1 week ago.
78858
4.7
11 ganeshh.iyer
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 1 month 1 week ago.
27246
3.7
3 TCC_2
Nexus - vPC Recommendations
Last Reply 1 month 2 weeks ago.
17425
5.0
2 pnagpal
Known Issues on Cisco 7600 Router ES+ Line Cards
Last Reply 1 month 3 weeks ago.
12454
5.0
6 Aleksandar Vidakovic
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 1 month 1 week ago.
21483
4.6
12 jakula
blog License Activation on 4500
Last Reply 4 months 2 weeks ago.
150
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 4 months 3 weeks ago.
7001
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 7 months 3 weeks ago.
2105
5.0
5 aninchat
blog Booting Cisco Router from a TFTP server
Last Reply 7 months 3 weeks ago.
14475
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 8 months 1 week ago.
36884
5.0
7 aninchat
blog Configuring a frame-relay switch
Last Reply 9 months 2 weeks ago.
5802
5.0
7 aninchat
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 9 months 3 weeks ago.
369
5.0
0 Francine Richards
blog Upcoming Ask the Expert Event with Cisco Designated VIP Marwan Al-shawi May 12-23
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121
0.0
0 Francine Richards
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97
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0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
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298
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
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1007
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 2 years 9 months ago.
709
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 years 1 month ago.
77
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 years 10 months ago.
20625
5.0
0 shashasi
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 9 months ago.
7893
5.0
9 rucjain
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 11 months 2 weeks ago.
271
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 11 months 2 weeks ago.
4690
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 2 months ago.
1401
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 6 months ago.
1754
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 7 months ago.
2256
4.5
4 InayathUlla Sharieff
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