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.

I seem to have fallen into a trap, and I wonder if anyone else has fallen into the same trap, or knows how to get out of it. It concerns the OTV ar...
28 min 47 sec ago
Hello all,I apologize in advance if this question is very simple or difficult to explain as I don't have any formal network training - but I am a f...
4 hours 54 min ago
Hi, all,I've just started working with a 2504 Wireless LAN controller and bunch of 2702i Access Points.  Spent a lot of time in the controller and...
17 hours 58 min ago
Estou precisando cotar um switch cisco com as seguintes características, porém não sei o modelo. Poderiam me ajudar? Requisitos do SwitchInterface:...
19 hours 29 min ago
Hi,I have a small LAN consisting of1 x Cisco ASA 5505,2 x SG200-50p and 1 X SF200-24P,to this I have connected 15 x AP-75221 wireless access points...
1 day 30 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 Local SPAN on Nexus 5548 + FEX
Last Reply 4 min 4 sec ago.
92 0 5 4 Kevin Dorrell
discussion OTV cross-connected even and odd VLANs
Last Reply 28 min 47 sec ago.
0 0 0.0 0 Kevin Dorrell
discussion show ip cef switching statistic output - some clarifications required
Last Reply 54 min 16 sec ago.
0 0 0.0 1 Alexey Stytsenko
discussion Where can I get the Cisco Generic Visio Icons in Color (Cisco blue)?
Last Reply 1 hour 35 min ago.
12359 0 5 5 Peter Long
discussion Local device is not AED-Capable - OTV
Last Reply 1 hour 43 min ago.
110 0 0.0 1 Kevin Dorrell
discussion Cisco 7600/ Catalyst 6500 Supervisor RSP 720 DRAM size question
Last Reply 1 hour 55 min ago.
23 1 0.0 1 Alexey Stytsenko
discussion Nexus VLAN AED selection
Last Reply 1 hour 56 min ago.
55 0 0.0 1 Kevin Dorrell
discussion ACL inter-vlan routing
Last Reply 2 hours 33 min ago.
36 0 5 6 jonasvanraes1
discussion Block Printers
Last Reply 44 min 39 sec ago.
21 0 0.0 6 Ahmad Jan
discussion Connecting to devices at the same time with same default IP address
Last Reply 4 hours 19 min ago.
11 0 0.0 3 donlindsay70
discussion SG300 L3 switch/inter-VLAN routing - ASA5505 firewall
Last Reply 4 hours 54 min ago.
0 0 0.0 0 Robert Bradley-Combs
discussion ws-x4612-sfp-e line card on 4506
Last Reply 5 hours 56 min ago.
0 0 0.0 1 Leo Laohoo
discussion TDR cable testing support on the 2960-X
Last Reply 6 hours 44 min ago.
11 0 0.0 2 Leo Laohoo
discussion split switch for dmz
Last Reply 9 hours 11 min ago.
81 0 0.0 7 rizwanr74
discussion IP overlapping
Last Reply 1 day 12 hours ago.
39 0 5 7 cchamorr
discussion NEW THREAD: 10G SFP+ Auto-Negotiating to 1G?
Last Reply 10 hours 53 min ago.
64 0 4.5 4 Marvin Rhoads
discussion Having trouble getting WLAN to access outside its subnet
Last Reply 17 hours 58 min ago.
14 0 0.0 0 Brett Tesdall
discussion 3524XL canot ping from CLI nd IP phones do not DHCP address
Last Reply 12 hours 16 min ago.
18 0 0.0 1 amikat
discussion Cannot get LAN access to Internet via Cisco 1921 Router
Last Reply 13 hours 1 min ago.
29 0 0.0 8 gtchenson
discussion IP addressing question
Last Reply 12 hours 52 min ago.
23 0 0.0 10 Jon Marshall
discussion 2960 Switches IOS 15.0(2) SE5: no telnet http ssh ...
Last Reply 14 hours 7 min ago.
55 0 0.0 11 Jay Vivas
discussion Change BGP AD...but not based on ACL !
Last Reply 14 hours 57 min ago.
8 0 0.0 1 Karl Tremblay
discussion vPC on Cisco Nexus 3548 -- "Error: vPC feature is not supported"
Last Reply 14 hours 58 min ago.
4353 0 0.0 15 alf@de.ibm.com
discussion voice qos
Last Reply 15 hours 1 min ago.
18 0 0.0 3 Joseph W. Doherty
discussion Can I use a GRE tunnel to solve my problem?
Last Reply 15 hours 17 min ago.
24 0 5 6 procopius1980
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
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3640
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 3 years 4 months ago.
6983
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2 pnagpal
Deep dive into EIGRP Summarization
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15
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0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
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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
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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
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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
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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
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0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
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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
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0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
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1007
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0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
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709
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
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77
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 years 10 months ago.
20625
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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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