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, Currently my company is running L2 VPLS and we have 6500 switches in one of our branches. We are planning to relocate this branch to a new...
11 min 38 sec ago
Hello experts,I has several Vlans eg: Vlan125,vlan126,vlan127, while  only Vlan127 has ACLs name "INTERNAL_DENY_ACL" and applied with "in" interfac...
27 min 29 sec ago
I have connected 2 Cisco 3750 switches "WS-C3750-48TS-S" with the LC to LC Duplex Single Mode fiber cable. Both the switches are communicating with...
1 hour 15 min ago
Dear Friends,  I am looking for a help about the VLAN addition to a existing port profile. I have to add vlans to existing port profile. Vlans exis...
1 hour 33 min ago
Cisco Packet Tracer assignment. Help, pleasePlease See attached pktI did not understand the topologyI do not understand how should ‘TEST PCs’ commu...
2 hours 17 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6738 569 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion Nexus N7k F2e routed interface and Sync Configuration
Last Reply 43 sec ago.
61 0 0.0 12 Steven112
discussion VPLS - Extend VLAN
Last Reply 11 min 38 sec ago.
0 0 0.0 0 stharmal
discussion What is the mean "%STP-2-DISPUTE_DETECTED" ?
Last Reply 21 min 41 sec ago.
15116 0 0.0 3 Krzysztof Zaleski
discussion DHCP server and ip helper-address issue
Last Reply 26 min 11 sec ago.
9376 0 0.0 6 Leonardo Gonzaga
discussion Connection between Vlans issue
Last Reply 27 min 29 sec ago.
0 0 0.0 0 Trung Minh
discussion Measure bandwidth in local network
Last Reply 40 min 12 sec ago.
5 0 0.0 1 mvaughan1
discussion How to upgrade ios on ASR1k , any steps to follow?
Last Reply 54 min 16 sec ago.
8 0 0.0 2 MAnoj Kumar
discussion 3750 switch and HP switch fiber connectivity issue
Last Reply 1 hour 15 min ago.
0 0 0.0 0 Mukesh Kumar
discussion How do I disable Cipher Block Chaining (CBC) encryption for SSH server on Cisco 3560X Switches
Last Reply 1 hour 26 min ago.
6 0 0.0 1 Karsten Iwen
discussion Packet loss when pinging from/to a cisco 3560e switch
Last Reply 1 hour 27 min ago.
17 0 0.0 5 Madhukrishnan G...
discussion show ip arp not populating
Last Reply 1 hour 32 min ago.
0 0 0.0 1 Aaron Harrison
discussion NOT ABLE TO ADD VLAN TO PORT PROFILE
Last Reply 1 hour 33 min ago.
0 0 0.0 0 mohit.pathak2000
discussion WS-F6700-DFC3C Missing from show inventory
Last Reply 1 hour 35 min ago.
11 0 0.0 2 billybong
discussion Cisco Packet Tracer assignment. Help, please
Last Reply 2 hours 17 min ago.
0 0 0.0 0 Twina1111
discussion Shaping 10G to 5G
Last Reply 2 hours 53 min ago.
15 0 5 2 Mokhalil82
discussion show run does not show usernames configured on the router
Last Reply 3 hours 36 min ago.
21 0 0.0 4 Bbluemilk82
discussion Cisco 1941 DHCP problem
Last Reply 3 hours 42 min ago.
9 0 0.0 1 a.klingenberg
discussion Unable to connect to catalyst express 500
Last Reply 7 hours 3 min ago.
45 0 5 4 chinpohpang851
discussion Cisco C4503-E is being reloaded without a reason
Last Reply 8 hours 46 min ago.
33 0 0.0 7 cehill
discussion Trunk port vs Access port speed
Last Reply 9 hours 3 min ago.
6 0 5 2 de fl
discussion CAM aging time VS Port-security aging time
Last Reply 9 hours 33 min ago.
0 0 0.0 0 shinakuma123
discussion 2960X Stack Fails After reload Command
Last Reply 9 hours 45 min ago.
149 0 0.0 7 adwang_bing
discussion Proxy Arp debugging
Last Reply 9 hours 49 min ago.
4 0 0.0 1 Richard Burts
discussion help with multiple nat translation on a Cisco Nexus 3548
Last Reply 11 hours 10 min ago.
11 1 0.0 4 les.k.stott
discussion 871 router cwmp inventory file
Last Reply 12 hours 34 min ago.
4 0 0.0 1 Karsten Iwen
Filter Results
Subject Views Rating Comments Author
QoS marking based on the “trust dscp” IOS CLI command
Last Reply 6 hours 49 min ago.
3
0.0
0 ben.epskamp
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - FAQ from live webcast
Last Reply 3 days 23 hours ago.
4528
5.0
2 ashirkar
The %SUPQ-4-CPUHB_RECV_STARVE: Still seeing receive queue stuck after throttling error message is displayed in the logs of Cisco Catalyst 2970, Catalyst 3560, or Catalyst 3750 Metro series switches running Cisco IOS System Software
Last Reply 1 week 3 days ago.
7016
0.0
1 TCC_2
SNMP Engine over 80% CPU 100%!!! ?
Last Reply 1 week 4 days ago.
4199
0.0
3 vita_user
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 5 days ago.
43176
4.5
6 Thamaraiselvam Santhanam
3850: Understanding interface configuration on NM modules
Last Reply 1 week 5 days ago.
15672
5.0
8 Richard Primm
Password Recovery on Cisco Catalyst 3850
Last Reply 1 week 6 days ago.
1811
0.0
2 Collin Clark
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 2 weeks 2 days ago.
70
0.0
2 Ty Gadberry
Route to Host Stuck on Switch
Last Reply 2 weeks 5 days ago.
2706
5.0
4 martinez-adrian
Single-sided vs double-sided vpc
Last Reply 3 weeks 5 days ago.
8877
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 2 years 6 months ago.
6943
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 3 years 3 months ago.
3689
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 3 years 5 months ago.
7042
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 3 years 8 months ago.
18
0.0
0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 year 1 month ago.
98126
4.0
1 Shaun Hummel
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 month 3 days ago.
41197
5.0
12 SunilKhanna
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 5 years 9 months ago.
396
0.0
0 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 month 3 weeks ago.
101137
4.7
47 ashirkar
example of Embedded Event Manager (EEM) on my 881W - to shut down a interface at 1am
Last Reply 1 month 3 weeks ago.
202
4.0
2 dshornstein
OSPF and IS-IS Differences
Last Reply 1 month 3 weeks ago.
3993
5.0
1 inderdeeps
Switch Fabric- Troubleshooting tips
Last Reply 3 years 4 months ago.
18587
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 2 months 2 days ago.
27965
5.0
4 TCC_2
Troubleshooting tips for 3750X Stack power feature
Last Reply 2 months 5 days ago.
13558
4.0
5 pnagpal
ITD: Load Balancing, Traffic Steering & Clustering using Cisco switches
Last Reply 2 months 1 week ago.
59
5.0
0 expertadvisor20151
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 2 months 1 week ago.
17174
4.6
12 jakula
blog License Activation on 4500
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179
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 5 months 2 weeks ago.
7038
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 8 months 2 weeks ago.
2206
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 8 months 2 weeks ago.
15585
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 9 months 1 week ago.
38731
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 10 months 2 weeks ago.
5895
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 10 months 3 weeks ago.
383
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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123
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 11 months 6 days ago.
99
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0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 11 months 2 weeks ago.
314
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 2 years 10 months ago.
1322
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 2 years 10 months ago.
741
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 years 1 month ago.
82
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 years 11 months ago.
24316
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 10 months ago.
7879
5.0
9 rucjain
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 1 year 1 week ago.
272
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 1 week ago.
5080
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 3 months ago.
1540
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 7 months ago.
1805
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 8 months ago.
2275
4.5
4 InayathUlla Sharieff
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