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.

Bit of a random question but I've had it a couple of times now so need to reach out for some advice.We have 6x SG500-52P switches in a stack via 5G...
4 hours 13 min ago
 Firewall: Cisco ASA 5510attached file (network diagram)We have some networks configured in our firewall. The network 10.1.8.0 / 22 is our corporat...
6 hours 39 min ago
Hey AllWe are in the process of migrating our existing Catalyst 4500/6500 switches in the floor closets to the Cisco 6880 and IA architecture. Sinc...
9 hours 59 min ago
Hi, I have two C3750G switches that are doing the exact same thing. port 1-2, 5-6, 9,10 ports are not enabling when I connect to a remote switch us...
10 hours 9 min ago
Hello allI need your help and your feedback because I didn't see where is my mistake or error on my configuration.The project is for doing the repl...
10 hours 48 min ago
         
Switches 6733 569 6 1 0
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
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discussion Plugging a switch into an other switch via ethernet
Last Reply 52 min 46 sec ago.
0 0 5 4 kierangio123
discussion SG500 Crash - VOIP phone need repatching to work?
Last Reply 4 hours 13 min ago.
4 0 0 0 Andy Roberts
discussion CISCO 2811 PASSWORD RESET
Last Reply 2 hours 52 min ago.
4 0 0 1 Peter Paluch
discussion Cisco ASA - Connectivity Issues
Last Reply 5 hours 39 min ago.
8 0 0 0 edilson.silva1
discussion UNI port
Last Reply 5 hours 30 min ago.
6 0 0 1 malshara
discussion Cisco 6880 and IA migration
Last Reply 9 hours 59 min ago.
5 0 0 0 mp0700077
discussion C3750G 12S-S SFP switch only half ports enabling on two switches
Last Reply 10 hours 9 min ago.
7 0 0 0 newfabcom
discussion Jumbo frames on native vlan on 3560
Last Reply 10 hours 43 min ago.
8 0 0 0 matthydras
discussion Mrinfo display multicast metric = 0
Last Reply 12 hours 52 min ago.
12 0 0 1 dominic.caron
discussion High Number of Out Discards on 2960x Switches
Last Reply 53 min 47 sec ago.
34 0 0 4 InayathUlla Sharieff
discussion Crypto Accelerator - Not being Used
Last Reply 10 hours 11 min ago.
29 0 5 4 Peter Paluch
discussion Boot Variable in Nexus
Last Reply 10 hours 42 min ago.
6 0 0 0 Ranji Prem Andrew P
discussion UC540W-FXO-K9
Last Reply 14 hours 29 min ago.
3 0 0 0 Mickey Shekdar
discussion Delayed logfile logging on N7K
Last Reply 15 hours 24 min ago.
0 0 0 0 Luis Pastor
discussion VLAN mapping
Last Reply 16 hours 13 min ago.
14 0 0 0 dhughes133
discussion Dot1x with Multi-Domain vs Multi-Auth
Last Reply 16 hours 35 min ago.
7 0 0 0 CSCO11854658
discussion Nexus in Enterprise Core
Last Reply 12 hours 4 min ago.
21 0 0 1 dominic.caron
discussion Is there any EOS/EOL for 6500-E ?
Last Reply 16 hours 56 min ago.
9 0 0 1 steve-fuller
discussion Router 1800series diagnostic
Last Reply 12 hours 42 min ago.
15 0 0 1 mark malone
discussion Vlans and subnets
Last Reply 1 day 41 min ago.
16 0 5 1 Peter Paluch
discussion air-ap1252ag-p-k9 part number?
Last Reply 1 hour 11 min ago.
19 0 0 3 InayathUlla Sharieff
discussion Privilege access through ACS AD accounts
Last Reply 1 day 3 hours ago.
7 0 0 0 jhager001
discussion OSPF advertising phantom route
Last Reply 3 hours 9 min ago.
13 0 0 3 Peter Paluch
discussion Cisco 3750 3650 switches SSH issue
Last Reply 1 hour 5 min ago.
76 0 0 27 Adam Hudson
discussion How many mac address for vlan should have in one switch ?
Last Reply 13 hours 41 min ago.
26 0 5 3 showipospf
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%C4K_SUPERVISOR-2-SOFTERROR / %C4K_SUPERVISOR-2-FPGASOFTERROR
Last Reply 12 hours 21 min ago.
0
0.0
0 InayathUlla Sharieff
Properly Installing Cisco USB Console Driver
Last Reply 1 week 2 days ago.
101
0.0
1 lsgabrillo
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 week 12 hours ago.
83
0.0
0 Luis Villanueva Brito
Running 40 routers with IOU in 4GB RAM
Last Reply 1 month 7 hours ago.
55
0.0
0 Sudeb Das
SSH version 2 no IOS cat4000-i5s-mz.122-25.EWA14.bin
Last Reply 1 month 1 week ago.
22
0.0
1 Sergio Alvares
Cisco Nexus 7000 / 7700 Line Cards
Last Reply 1 month 1 week ago.
131
0.0
0 Shaun Hummel
Cisco 891 fresh configuration/management without console cable
Last Reply 2 months 1 week ago.
32
0.0
0 totardo.tobing11
How to define the VLANs allowed on a trunk link
Last Reply 2 months 1 week ago.
45
0.0
0 KHALEELUR RAHMAN.A
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 months 1 week ago.
145
0.0
2 TOM FRANCHINA
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 2 months 2 weeks ago.
44
0.0
0 minestraschaos1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 3 months 2 weeks ago.
53
0.0
0 josecesp
Router Cisco 2921 auto reboot
Last Reply 3 months 1 week ago.
85
0.0
4 npsangvt1
Temperature alarms on WS-X6904-40G
Last Reply 4 months 1 week ago.
26
5.0
0 Madhukrishnan Gopinathan Nair
Increased Total output drops/OutDiscards by QoS for Desktop Series Switches Products
Last Reply 4 months 3 weeks ago.
90
0.0
0 Csc TsWebDocs
QoS marking based on the “trust dscp” IOS CLI command
Last Reply 5 months 17 hours ago.
54
0.0
0 ben.epskamp
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 5 months 2 weeks ago.
239
0.0
2 Ty Gadberry
ITD: Load Balancing, Traffic Steering & Clustering using Cisco switches
Last Reply 7 months 1 week ago.
96
5.0
0 expertadvisor20151
Flexible netflow
Last Reply 8 months 4 weeks ago.
88
0.0
0 sathvik k v
Minor error on WS-X6704-10GE due to TestErrorCounterMonitor
Last Reply 9 months 4 days ago.
17
0.0
0 Adrian Jimenez Blanco
How to add additional Internet Link
Last Reply 10 months 2 weeks ago.
70
0.0
0 dabur10376004
Introducing Cisco Log Viewer: Cisco Equipment Investigation Tool
Last Reply 10 months 2 weeks ago.
292
0.0
0 Csc TsWebDocs
Understanding and Configure NX-OS “ Session manager” feature
Last Reply 11 months 1 day ago.
110
0.0
0
SSH suddenly stop working on ASR9k
Last Reply 11 months 1 day ago.
116
0.0
0
Understand and configuring NX-OS Configuration Rollback" feature
Last Reply 11 months 1 day ago.
99
0.0
0
Troubleshooting High CPU on 3750
Last Reply 9 months 6 days ago.
982
5.0
0 InayathUlla Sharieff
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blog License Activation on 4500
Last Reply 10 months 2 weeks ago.
416
0.0
1 sheraz butt
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 1 year 3 months ago.
383
5.0
0 Francine Richards
blog Upcoming Ask the Expert Event with Cisco Designated VIP Marwan Al-shawi May 12-23
Last Reply 1 year 3 months ago.
129
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 1 year 4 months ago.
123
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 4 months ago.
402
5.0
0 hsticher
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 1 year 5 months ago.
289
0.0
0 Julie Burruss
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 8 months ago.
1975
0.0
1 Ramu Gajula
blog Switch: How to test a cable status?
Last Reply 1 year 5 months ago.
7767
5.0
3 Anand G
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 2 years 1 week ago.
2069
4.7
1 Anand G
blog How to build the topology of an OSPF area
Last Reply 1 year 1 month ago.
2518
5.0
5 Aninda Chatterjee
blog Parity Error.
Last Reply 2 years 1 month ago.
2395
4.5
4 InayathUlla Sharieff
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 4 months ago.
129
5.0
0 jakula
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 5 months ago.
8301
5.0
9 rucjain
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 9 months ago.
4420
4.8
1 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 1 year 3 months ago.
6686
5.0
7 Aninda Chatterjee
blog Important Nexus 7000 NX-OS Software Update
Last Reply 3 years 2 months ago.
4097
5.0
0 ctripoli
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 4 months ago.
761
5.0
2 srereddy
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 4 months ago.
1432
5.0
0 srereddy
blog Moving Beyond the Internet of Things in 2012
Last Reply 3 years 7 months ago.
1711
5.0
0 mmorrow
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 2 months ago.
49933
5.0
7 Aninda Chatterjee
blog Upcoming Webcast: Troubleshooting Tools to Analyze High CPU Utilization Issues on Cisco Catalyst 6500 Series Switches
Last Reply 3 years 7 months ago.
1659
0.0
0 ciscomoderator
blog Troubleshooting L2 issues - ARP Poisoning
Last Reply 3 years 7 months ago.
7418
0.0
4 rparames
blog New Cisco 5915 ESR
Last Reply 3 years 3 months ago.
4246
5.0
2 Sonal Singh
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 1 month ago.
11378
5.0
7 pnagpal
blog Machine-to-Machine Communications as a Subset of Internet of Things
Last Reply 4 years 2 weeks ago.
2106
0.0
0 mmorrow
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