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 have a Cisco 2851 and a 3750. At one point everything was fine and everything was working. I was able to access the internet from multiple vlans....
12 min 1 sec ago
We have a Nexus 5K that we would like to connect a 10gig Server/Monitor device to.the 5K setup is as follows:Software  BIOS:      version 1.3.0  lo...
by broow
18 hours 59 min ago
Hi Guys,I have a problem with Nexus7k not displaying any values for L3 packets forwarded/received for subinterfaces when doing ifxtable snmp walk. ...
22 hours 22 min ago
HOW TO BUILD VLAN in L2 switch SM300 with firewall routing.  Query: In our infrastructure we have two network zones. 1st one is local network (back...
1 day 1 hour ago
I lit the switch like the procedure  state. However I  have not  any address delivered by the DHCP, it not exist on this version of button Reset an...
1 day 7 hours 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 NTP Design Questions
Last Reply 6 min 25 sec ago.
24 0 0.0 5 Reza Sharifi
discussion Switch will not talk to router
Last Reply 12 min 1 sec ago.
0 0 0.0 0 mikerocom1
discussion Nexus Fe2 Card shared mode
Last Reply 2 hours 25 min ago.
1 0 0.0 1 Jon Marshall
discussion DHCP Pool error
Last Reply 4 hours 14 min ago.
103 0 0.0 10 eash
discussion Nexus 9327TX quries
Last Reply 5 hours 56 min ago.
10 0 0.0 1 Steven112
discussion netflow vs IP accounting !?
Last Reply 7 hours 58 min ago.
17 0 0.0 3 Ashok Kumar
discussion IOS Release 15.0.2-SE4 caveat related to aaa
Last Reply 9 hours 38 min ago.
9 0 0.0 1 rakeshvelagala
discussion Pinging a Device directly connected to the Cisco Switch
Last Reply 10 hours 9 min ago.
11 0 0.0 2 rakeshvelagala
discussion 6880X VSS VSL Link down
Last Reply 11 hours 56 min ago.
19 0 0.0 3 InayathUlla Sharieff
discussion Smart Install Vstack Possible DHCP Issues
Last Reply 12 hours 8 min ago.
28 0 5 7 Leo Laohoo
discussion STP Questions
Last Reply 13 hours 49 min ago.
20 0 0.0 4 Jon Marshall
discussion Difference between X4748 & X4648
Last Reply 15 hours 55 min ago.
34 0 5 5 zekebashi
discussion Question of telnet or SSH to 4500X management port
Last Reply 18 hours 50 min ago.
15 0 5 1 amikat
discussion Nexus 5K 10 gig server connection
Last Reply 18 hours 59 min ago.
2 0 0.0 0 broow
discussion ASR 1001X Vlan setting with etherchannel
Last Reply 19 hours 14 min ago.
17 0 0.0 3 Jon Marshall
discussion
Last Reply 20 hours 38 min ago.
10187 13 5.83333 50 divanko
discussion Problems with routing between VLAN's using a Catalyst 2960-X and RV325
Last Reply 20 hours 37 min ago.
78 0 5 8 olver.hernandez
discussion 881G router issue connecting to WAN from LAN
Last Reply 21 hours 23 min ago.
83 0 5 13 Emmanuel Valdez
discussion Nexus 5548UP for SAN Switch
Last Reply 21 hours 30 min ago.
41 0 0.0 8 Evan Ray
discussion Nexus 5500 Object Tracking and Routes
Last Reply 21 hours 56 min ago.
58 0 0.0 2 cweinhold
discussion Nexus 7k SNMP ifxtable
Last Reply 22 hours 22 min ago.
2 0 0.0 0 Michal Dobrzynski
discussion High convergence time rstp
Last Reply 23 hours 3 min ago.
56 0 0.0 12 Jon Marshall
discussion C2960-8TC-S
Last Reply 1 day 29 min ago.
15 0 0.0 1 Joseph W. Doherty
discussion how to configure logs to be sent for TFTP server !?
Last Reply 1 day 36 min ago.
17 0 0.0 4 mohammed hashim
discussion Can't connect to Switch
Last Reply 1 day 37 min ago.
20 0 0.0 1 Cisco Freak
Filter Results
Subject Views Rating Comments Author
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 day 14 hours ago.
39784
5.0
12 SunilKhanna
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 5 days 14 hours ago.
53475
4.6
5 Thamaraiselvam Santhanam
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 5 years 8 months ago.
390
0.0
0 TCC_2
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 year 3 weeks ago.
92394
4.0
1 Shaun Hummel
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 2 weeks 6 days ago.
95750
4.7
47 ashirkar
example of Embedded Event Manager (EEM) on my 881W - to shut down a interface at 1am
Last Reply 3 weeks 15 hours ago.
186
4.0
2 dshornstein
OSPF and IS-IS Differences
Last Reply 3 weeks 21 hours ago.
3803
5.0
1 inderdeeps
Deep dive into EIGRP Summarization
Last Reply 3 years 7 months ago.
13
0.0
0 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 3 years 4 months ago.
6975
0.0
2 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 3 years 2 months ago.
3626
0.0
3 pnagpal
Switch Fabric- Troubleshooting tips
Last Reply 3 years 3 months ago.
18283
5.0
2 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 2 years 5 months ago.
6769
0.0
3 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 11 hours ago.
21778
5.0
4 TCC_2
Troubleshooting tips for 3750X Stack power feature
Last Reply 1 month 3 days ago.
13045
4.0
5 pnagpal
ITD: Load Balancing, Traffic Steering & Clustering using Cisco switches
Last Reply 1 month 5 days ago.
55
5.0
0 expertadvisor20151
Configuring Microsoft NLB on Nexus 7000
Last Reply 1 month 5 days ago.
5099
5.0
2 mrabbi
OSPF Design Best Practices
Last Reply 1 month 1 week ago.
34735
0.0
2 pnagpal
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 month 1 week ago.
78574
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.
27159
3.7
3 TCC_2
Nexus - vPC Recommendations
Last Reply 1 month 2 weeks ago.
17379
5.0
2 pnagpal
Known Issues on Cisco 7600 Router ES+ Line Cards
Last Reply 1 month 3 weeks ago.
12424
5.0
6 Aleksandar Vidakovic
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 1 month 3 weeks ago.
3375
5.0
4 Furose Khan Mohammed Ali
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 1 month 5 days ago.
21428
4.6
12 jakula
blog License Activation on 4500
Last Reply 4 months 1 week ago.
146
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 4 months 2 weeks ago.
6996
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 7 months 2 weeks ago.
2105
5.0
5 aninchat
blog Booting Cisco Router from a TFTP server
Last Reply 7 months 2 weeks ago.
14475
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 8 months 5 days ago.
36684
5.0
7 aninchat
blog Configuring a frame-relay switch
Last Reply 9 months 2 weeks ago.
5784
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 3 weeks ago.
121
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 10 months 4 days ago.
96
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 10 months 2 weeks ago.
296
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 2 years 9 months ago.
1002
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 2 years 8 months ago.
709
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 years 3 weeks ago.
77
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 years 10 months ago.
20607
5.0
0 shashasi
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 9 months ago.
7888
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 1 week ago.
270
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 11 months 2 weeks ago.
4644
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 2 months ago.
1393
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 6 months ago.
1751
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 7 months ago.
2255
4.5
4 InayathUlla Sharieff
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