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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Dears ,please help me in this problem I have switch 3750G-12S  but when we access in the switch by putty give me un knowing sample as below only wh...
6 min 42 sec ago
I think C3850 Switch in my customer site seems to have some problems..The major symptoms are following as :- I can see some physical interfaces on...
1 hour 56 min ago
Can I use the power supply of 4507R into 4507R+E?I have two old 4507R with 1300W power supply,now I want to upgrade to 4507R+E,Can I use the power...
2 hours 58 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...
4 hours 1 min ago
HiI have 2 switch 2960x and router, i connect 2 switches as etherchannel, and connect switch port which configure as trunk to router port, my quest...
5 hours 17 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 switch WS -3750G-12S have problem with console logging
Last Reply 6 min 42 sec ago.
0 0 0.0 0 mohamed Elsayed...
discussion Question about demerit of process switching and cached based switching.
Last Reply 16 min 37 sec ago.
0 0 0.0 1 Cisco Freak
discussion OSPF configuration
Last Reply 35 min 8 sec ago.
47 0 0.0 7 paul driver
discussion Cisco 3850 Lan base license support dot1x
Last Reply 45 min 27 sec ago.
22 0 5 5 Terry Cheema
discussion Nexus 99300 install license
Last Reply 1 hour 4 min ago.
8 0 5 2 Steven112
discussion Nexus Fe2 Card shared mode
Last Reply 1 hour 6 min ago.
20 0 5 4 Steven112
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 1 hour 53 min ago.
0 0 0.0 1 amikat
discussion Ask for a problem with C3850
Last Reply 1 hour 56 min ago.
0 0 0.0 0 DaeHeon Kang
discussion 2960S-24TS-L unable to upgrade to IOS 15.2(1)E1
Last Reply 2 hours 50 min ago.
400 1 0.0 11 nicola.pinton
discussion Can I use the power supply of 4507R into 4507R+E?
Last Reply 2 hours 58 min ago.
0 0 0.0 0 Chongyin Zhu
discussion bridge domain issue
Last Reply 3 hours 22 min ago.
0 0 0.0 2 marvin.dy
discussion Confused about output of show vlan id command
Last Reply 3 hours 35 min ago.
1 0 0.0 1 Bilal Nawaz
discussion Nexus 7000 vPC suspended VLAN problem
Last Reply 3 hours 57 min ago.
16945 0 5 12 Jarvin Christia...
discussion Cisco ISR G2 EHWIC Shaping is available ? (SDWRR)
Last Reply 4 hours 1 min ago.
0 0 0.0 0 mhiyoshi
discussion Anyconnect feature enabled or not?
Last Reply 23 hours 3 min ago.
1 0 0.0 0 srikanth ath
discussion Router-Switch
Last Reply 5 hours 17 min ago.
0 0 0.0 0 faziz faziz
discussion VRRP with STP
Last Reply 5 hours 46 min ago.
1 0 0.0 0 ruchik999
discussion QoS on Catalyst Switch
Last Reply 5 hours 52 min ago.
0 0 0.0 0 joseph.ostreicher
discussion Throughput of Cisco 3750-E
Last Reply 6 hours 14 min ago.
0 0 0.0 0 Sam Pragash
discussion vlan confusion
Last Reply 6 hours 30 min ago.
0 0 0.0 2 Terry Cheema
discussion DHCP doesn't assign IP's to client
Last Reply 9 hours 29 min ago.
0 0 0.0 0 eash
discussion 3524XL canot ping from CLI nd IP phones do not DHCP address
Last Reply 10 hours 47 min ago.
0 0 0.0 0 Michael Durham
discussion NEW THREAD: 10G SFP+ Auto-Negotiating to 1G?
Last Reply 11 hours 9 min ago.
50 0 5 3 visitor68
discussion Etherchannel Simultaneous Primary and Sub-Interface Config
Last Reply 11 hours 40 min ago.
31 0 0.0 6 Jon Marshall
discussion Issue configuring Nexus 6001 for NLB
Last Reply 13 hours 14 min ago.
76 1 5 7 Mike Saldivar
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
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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