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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Hi guys, I have a router     (LAN) ---------- (R1) ------------(WAN)The interface facing LAN has gotip address 10.25.3.1 255.255.0.0 ip wccp 80 red...
7 hours 29 min ago
Hello Experts, I want to know that meaning about "Secure, NTFY" fields on result of "show mac address-table". Please let me know about what is mean...
7 hours 34 min ago
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...
10 hours 15 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...
12 hours 52 min ago
Hi allI am using Cisco 2821 Router. I have a web server that can access from outside internet, but I cannot access the web server from internal net...
16 hours 35 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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Subject Views Votes Rating Replies Last replied by
discussion Block Printers
Last Reply 2 min 17 sec ago.
0 0 0.0 1 Leo Laohoo
discussion ask VLAN is active or not
Last Reply 48 min 15 sec ago.
13 0 5 2 Muhammad L. Hakim
discussion NAT - internal PC cannot access to internal web server by using WAN (Public) IP
Last Reply 16 hours 5 min ago.
6 0 0.0 0 Man Ho Lun
discussion ping v4 echo replies are split into 3 fragments?
Last Reply 1 hour 36 min ago.
9 0 0.0 2 Sh HH
discussion 1841 wic dsl card - slow connection
Last Reply 1 hour 46 min ago.
16 0 0.0 5 Leo Laohoo
discussion VRRP with STP
Last Reply 2 hours 27 min ago.
17 0 5 2 ruchik999
discussion vlan interface will not respond to ping
Last Reply 4 hours 6 min ago.
35 0 0.0 9 mikerocom1
discussion Catalyst 4500x-32
Last Reply 4 hours 54 min ago.
27 0 0.0 6 Joseph W. Doherty
discussion question regarding CPU processes
Last Reply 4 hours 59 min ago.
30 0 0.0 8 Joseph W. Doherty
discussion wccp question
Last Reply 6 hours 59 min ago.
0 0 0.0 0 glebpe185
discussion what is mean about "Secure, NTFY" field on "show mac address-table"?
Last Reply 7 hours 4 min ago.
0 0 0.0 0 kris.park
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 8 hours 1 min ago.
15 0 5 3 amikat
discussion Nexus 55xx NX-OS upgrades without interruption
Last Reply 8 hours 8 min ago.
10 0 0.0 1 Leo Laohoo
discussion DHCP Snooping Issue
Last Reply 8 hours 11 min ago.
90 0 5 16 amikat
discussion Replace master switch in stack
Last Reply 8 hours 14 min ago.
12 0 0.0 1 Leo Laohoo
discussion Router-Switch
Last Reply 8 hours 19 min ago.
15 0 0.0 1 Leo Laohoo
discussion Macro Help for access point
Last Reply 8 hours 20 min 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 9 hours 7 min ago.
12 0 0.0 1 Leo Laohoo
discussion Strange UDLD Issue
Last Reply 9 hours 11 min ago.
45 0 0.0 7 Leo Laohoo
discussion Elam capture capabilities on Nexus 9396PQ
Last Reply 9 hours 45 min ago.
1 0 0.0 0 Bedevere Curry
discussion vlan confusion
Last Reply 10 hours 2 min ago.
59 0 5 10 Jon Marshall
discussion Cant Telnet or SSH to switch
Last Reply 4 days 16 hours ago.
37 0 0.0 3 donmatlock1
discussion Problems with routing between VLAN's using a Catalyst 2960-X and RV325
Last Reply 11 hours 18 sec ago.
95 0 5 9 olver.hernandez
discussion Etherchannel Simultaneous Primary and Sub-Interface Config
Last Reply 10 hours 54 min ago.
52 0 0.0 10 Jon Marshall
discussion What image can i upgrade to on a WS-C3560-48PS-S switch?
Last Reply 11 hours 39 min ago.
43 0 0.0 12 Joseph W. Doherty
Filter Results
Subject Views Rating Comments Author
Single-sided vs double-sided vpc
Last Reply 10 min 6 sec ago.
8556
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 2 years 5 months ago.
6782
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.
93133
4.0
1 Shaun Hummel
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 3 days ago.
53878
4.5
5 Thamaraiselvam Santhanam
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 6 days 20 hours ago.
40023
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 4 days ago.
96433
4.7
47 ashirkar
example of Embedded Event Manager (EEM) on my 881W - to shut down a interface at 1am
Last Reply 3 weeks 5 days ago.
191
4.0
2 dshornstein
OSPF and IS-IS Differences
Last Reply 3 weeks 6 days ago.
3842
5.0
1 inderdeeps
Switch Fabric- Troubleshooting tips
Last Reply 3 years 3 months ago.
18332
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 5 days ago.
21889
5.0
4 TCC_2
Troubleshooting tips for 3750X Stack power feature
Last Reply 1 month 1 week ago.
13099
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.
5113
5.0
2 mrabbi
OSPF Design Best Practices
Last Reply 1 month 1 week ago.
34838
0.0
2 pnagpal
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 month 1 week ago.
79012
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.
27282
3.7
3 TCC_2
Nexus - vPC Recommendations
Last Reply 1 month 3 weeks ago.
17457
5.0
2 pnagpal
Known Issues on Cisco 7600 Router ES+ Line Cards
Last Reply 1 month 3 weeks ago.
12466
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
Last Reply 9 months 4 weeks ago.
121
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 10 months 1 week ago.
97
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 10 months 2 weeks ago.
298
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 2 years 9 months ago.
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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