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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Greetings, One of our 4510 switches that had a single active power supply went down early in the morning.  There is no crashfile on this.  I am tr...
22 min 51 sec ago
Hello Guys, I have a Cisco 6503, there are 16 ports on module 3 and they've been set as trunk ports for Layer 2 switches' uplinks for quite long t...
25 min 5 sec ago
Hi supportforums, I have a cisco 887 configured with trusted VLAN11 and untrusted VLAN33. Wired and wireless clients in VLAN11 get routed via the...
6 hours 37 min ago
Hello,  I have a small LAN, based on SG300-52MP 52-Port L3 switch. On this switch I have 3 VLAN (10, 20, 100) and TWO aDSL routers. At current conf...
10 hours 29 min ago
Hi, I have two C9332PQ switches with initial configuration and we need config the breakout mode at some interfaces. When we write the interface br...
10 hours 39 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6726 569 6 1 0
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Subject Views Votes Rating Replies Last replied by
discussion Cannot ping hosts from 3650 management interface
Last Reply 41 sec ago.
0 0 0 2 testrite1
discussion problem with HSRP Multiple.
Last Reply 16 min 50 sec ago.
13 0 0 1 Richard Burts
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42 0 5 9 milan.kulik
discussion How to Estimate Bandwidth Needs for Your Customers????? “Internet link speed”
Last Reply 36 min 31 sec ago.
8 0 0 2 Joseph W. Doherty
discussion how to convert Tengig port group back to 40gig in 6500 switch
Last Reply 40 min 39 sec ago.
8 0 5 2 shoaib sheikh
discussion SG300-20 Inter VLAN Routing problems
Last Reply 46 min 42 sec ago.
11 0 0 7 dynamotech
discussion STP Loopback error and Keepalive : ETHCNTR-3-LOOP_BACK_DETECTED
Last Reply 55 min 2 sec ago.
29 0 0 8 mark malone
discussion Licensing infrastructure is NOT initialized CAT6500
Last Reply 1 hour 8 min ago.
103 1 0 2 Salvador Antoni...
discussion missing mac address-table info?
Last Reply 1 hour 37 min ago.
669 0 0 13 pwwiddicombe
discussion LAN Crashes
Last Reply 2 hours 19 min ago.
68 0 0 15 mark malone
discussion How to monitor N7K frabic throughput
Last Reply 2 hours 39 min ago.
0 0 0 0 fsebera
discussion Nexus 7010 NTP Clock lacking
Last Reply 3 hours 14 min ago.
2 0 0 3 dukenuk96
discussion Offset list in EIGRP
Last Reply 3 hours 48 min ago.
25 0 5 3 Jon Marshall
discussion Cisco Nexus (5000 Series) - Slot 2 (expansion module) configuration
Last Reply 4 hours 24 min ago.
1 0 0 1 kwolfgramm
discussion Adding Aironet 1532i
Last Reply 4 hours 28 min ago.
10 0 0 1 Mohammad Setan
discussion traceroute is not working but pinging
Last Reply 4 hours 46 min ago.
16 0 0 3 milan.kulik
discussion Do you need a Default gateway in VLANs?
Last Reply 5 hours 4 min ago.
3 0 0 1 Jon Marshall
discussion 3650
Last Reply 5 hours 6 min ago.
0 0 0 1 preranda78
discussion Trunk Port Security & Native VLAN
Last Reply 5 hours 19 min ago.
65 0 0 8 edw
discussion NAT + PBR question
Last Reply 5 hours 28 min ago.
12 0 0 7 Boris Uskov
discussion VTP Msgs between 2 switches, via a Router
Last Reply 5 hours 53 min ago.
17 0 5 4 elmoutaallikbil...
discussion Cisco 3850 does not support REP (Resilient Ethernet Protocol), alternative??
Last Reply 5 hours 59 min ago.
422 4 1 3 Van Liedekerke Wim
discussion Link state monitoring in Cisco switches
Last Reply 7 hours 24 min ago.
10 0 0 2 omerar123
discussion Upgrade 2960S stack
Last Reply 8 hours 24 min ago.
15919 1 0 5 Ahmed Abdallah
discussion Adding subnets to ASA 5505 basic
Last Reply 8 hours 58 min ago.
43 0 0 10 Khaled Al-Jaberi
Filter Results
Subject Views Rating Comments Author
Understanding SPAN,RSPAN,and ERSPAN
Last Reply 7 min 59 sec ago.
59686
4.8
7 ashirkar
Using 3850 Embedded Wireshark (Wired)
Last Reply 7 hours 12 min ago.
39589
5.0
3 Colby Beam
How to use Time-Domain Reflectometer (TDR)
Last Reply 3 days 9 hours ago.
91120
5.0
84 Leo Laohoo
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 5 days 7 hours ago.
56672
5.0
14 SunilKhanna
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 6 days 15 hours ago.
307391
5.0
43 plumbis
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 1 week 3 days ago.
10772
5.0
7 Furose Khan Mohammed Ali
IPV6 on the Cisco 877
Last Reply 2 weeks 8 hours ago.
34769
5.0
0 Andrew Judson
QUICK TIPS: Installing Multiple Cisco Switches - Video
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5
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0 tfortunato
Error Message:%ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface <interface> Power Controller reports power Imax error detected
Last Reply 3 weeks 6 days ago.
15672
5.0
5 Sivagami Narayanan
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23
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0 indrapalccna
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Last Reply 1 month 1 day ago.
50296
4.7
60 ashirkar
OSPF and IS-IS Differences
Last Reply 1 month 1 week ago.
7001
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3 inderdeeps
34 Things about OSPF
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36
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Nexus - vPC Recommendations
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25582
5.0
4 pnagpal
The Cisco Discovery Protocol displays the "%CDP-4-DUPLEX_MISMATCH" error message on Catalyst fixed configuration switches running IOS software.
Last Reply 1 month 3 weeks ago.
19403
5.0
1 TCC_2
The "%Error formatting slot0 (Can not find flash algorithm)" error message is displayed during an attempt to format the ATA flash card in Cisco Catalyst 6000/6500 series switches
Last Reply 1 month 3 weeks ago.
2552
5.0
1 TCC_2
4500X-32 IOS upgrade procedure
Last Reply 1 month 4 weeks ago.
36
0.0
0 butturwa
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 2 months 1 week ago.
1115
5.0
2 Luis Villanueva Brito
How to configure Ether Switch Modules connected to a router
Last Reply 2 months 1 week ago.
2499
0.0
2 TCC_2
What is the difference between an IP base image and an IP services image
Last Reply 2 months 2 weeks ago.
202973
5.0
10 tahirshabbir
How to configure a Cisco Catalyst Express 500 series switch
Last Reply 3 months 18 hours ago.
18435
5.0
3 TCC_2
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 3 months 1 week ago.
156545
4.0
2 Shaun Hummel
3850: Understanding interface configuration on NM modules
Last Reply 3 months 2 weeks ago.
33858
5.0
12 Richard Primm
I am receiving some error like broadcast and input error please see detail, Is it normal ?
Last Reply 4 months 4 days ago.
51
0.0
1 junaidmumtazcisco
SSH version 2 no IOS cat4000-i5s-mz.122-25.EWA14.bin
Last Reply 4 months 2 weeks ago.
54
0.0
2 Sergio Alvares
Filter Results
Subject Views Rating Comments Author
blog Loading an IOS on a switch via Xmodem
Last Reply 3 weeks 2 days ago.
65730
5.0
11 Aninda Chatterjee
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
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25010
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44
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8 Robert Taylor
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0 Ganesh Hariharan
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28534
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2913
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blog Configuring a frame-relay switch
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0 Francine Richards
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139
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0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
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137
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blog OSPF over IPsec Tunnel stucks in INIT state
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489
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blog Pre-build SPT feature on Nexus - Benefits & Caveats
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blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
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blog Flexlink in Cisco Layer 2 network
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9 Ruchir Jain
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