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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Hello,I'm attempting to migrate a non-backbone normal OSPF area to a NSSA area which is simple enough. However, the challenge is to perform this wi...
7 min 44 sec ago
hi all,i've got an issue with a new cisco 3650 48 port wherein older AP 1231 keeps on disconnecting.the connection is just a simple trunk.#sh run i...
2 hours 1 min ago
Hi guys,This morning unpleasant surprise happened to me. One of critical ports was err-disabled because of BPDU guard (device B). This wouldn't be...
2 hours 3 min ago
hi all,i've got an issue with a new cisco 3650 48 port wherein older AP 1231 keeps on disconnecting.the connection is just a simple trunk.#sh run i...
2 hours 4 min ago
Hello,I have a Distribution/Access Switch Cisco WS-4506-E Switch with Supervisor II (EOL, EOS). when are the exact EOL/EOS dates and can only upgra...
2 hours 19 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6738 569 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion Migrating a non-backbone normal OSPF Area to a NSSA area with zero downtime
Last Reply 7 min 44 sec ago.
0 0 0.0 0 jahed.miah.uddin
discussion 3750X stack with broken 715W power supply
Last Reply 28 min 58 sec ago.
15 0 5 3 albertozanetti
discussion Question about cisco OLT equipment in a GPON network
Last Reply 42 min 30 sec ago.
321 0 0.0 6 Echo Chan
discussion QOS on a 3850 switch
Last Reply 1 hour 9 min ago.
76 0 0.0 2 Joris Deprouw
discussion Router throughput Cisco 867vae vs ISP provided router
Last Reply 1 hour 53 min ago.
28 0 0.0 9 Joseph W. Doherty
discussion Cisco 3650 Issue with 1231 AP
Last Reply 2 hours 1 min ago.
0 0 0.0 0 johnlloyd_13
discussion BPDU guard - weird situation
Last Reply 2 hours 3 min ago.
0 0 0.0 0 Milos Jovanovic
discussion Cisco 3650 Issue with 1231 AP
Last Reply 2 hours 4 min ago.
0 0 0.0 0 johnlloyd_13
discussion Cisco WS-4506-E Switch with Supervisor II (EOL, EOS)
Last Reply 2 hours 19 min ago.
0 0 0.0 0 alnouri04
discussion Different spanning tree protocols behavior
Last Reply 2 hours 21 min ago.
23 0 5 3 zafarjankhan
discussion no internet access for vlan devices
Last Reply 2 hours 22 min ago.
16 0 5 6 devils_advocate
discussion SG300 routing problem
Last Reply 2 hours 28 min ago.
0 0 0.0 1 devils_advocate
discussion SG300 routing problem
Last Reply 3 hours 14 min ago.
0 0 0.0 0 Rodante Evangelista
discussion SG300 routing problem
Last Reply 3 hours 14 min ago.
0 0 0.0 0 Rodante Evangelista
discussion CIsco ISR 1941, EHWIC and QoS
Last Reply 3 hours 26 min ago.
0 0 0.0 0 tshbroman
discussion Multicast source redundancy
Last Reply 3 hours 52 min ago.
30 0 0.0 2 smalderez
discussion WS-X45-SUP8-E: %SFF8472-5-THRESHOLD_VIOLATION
Last Reply 4 hours 41 min ago.
39 0 5 8 johan oosterwaal
discussion Assigning a seperate internet connection to a certain vlan .
Last Reply 4 hours 56 min ago.
55 0 5 13 BilalNass
discussion route summarization - could this be wrong ?
Last Reply 5 hours 37 min ago.
59 0 5 13 szejiekoh
discussion Connecting IBM B22 FEXes to Nexus 7000
Last Reply 5 hours 44 min ago.
0 0 0.0 0 irakli_n
discussion Configuring PBR on 4500
Last Reply 6 hours 9 min ago.
54 1 0.0 2 Dennis Mink
discussion Unable to do show run Cisco 4507
Last Reply 6 hours 11 min ago.
22 0 5 3 Leo Laohoo
discussion Management port in Cisco Switches (are they really physical port)
Last Reply 6 hours 13 min ago.
66 0 5 15 Leo Laohoo
discussion Ask the Expert: NGWC (3850/5760): Architecture and Deployment
Last Reply 6 hours 20 min ago.
305 0 5 35 John Haitem
discussion Fastest migration method for FEX
Last Reply 7 hours 19 min ago.
3 0 0.0 2 Madhukrishnan G...
Filter Results
Subject Views Rating Comments Author
Temperature alarms on WS-X6904-40G
Last Reply 5 days 2 hours ago.
7
5.0
0 Madhukrishnan Gopinathan Nair
How to configure an IP access list to control directed broadcasts for the Wake-on-LAN setup
Last Reply 5 days 15 hours ago.
2794
0.0
1 TCC_2
Nexus - vPC Recommendations
Last Reply 1 week 3 hours ago.
18435
5.0
3 pnagpal
Understanding SPAN,RSPAN,and ERSPAN
Last Reply 1 week 4 days ago.
33531
4.7
5 ashirkar
Increased Total output drops/OutDiscards by QoS for Desktop Series Switches Products
Last Reply 2 weeks 6 hours ago.
14
0.0
0 Csc TsWebDocs
Telnet session to FWSM module disconnects due to MTU size issues in 6500 or 7600 switches
Last Reply 2 weeks 6 days ago.
1412
0.0
0 TCC_2
X2-10GB-LRM vs X2-10GB-SR compatability
Last Reply 2 weeks 6 days ago.
1381
0.0
9 yogesh rajguru
Fortify Your LAN with Cisco Catalyst Switching - FAQ from live webcast
Last Reply 2 weeks 6 days ago.
138
5.0
0 Anim Saxena
QoS marking based on the “trust dscp” IOS CLI command
Last Reply 3 weeks 1 day ago.
20
0.0
0 ben.epskamp
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - FAQ from live webcast
Last Reply 3 weeks 4 days ago.
4738
5.0
2 ashirkar
The %SUPQ-4-CPUHB_RECV_STARVE: Still seeing receive queue stuck after throttling error message is displayed in the logs of Cisco Catalyst 2970, Catalyst 3560, or Catalyst 3750 Metro series switches running Cisco IOS System Software
Last Reply 1 month 2 days ago.
7089
0.0
1 TCC_2
SNMP Engine over 80% CPU 100%!!! ?
Last Reply 1 month 3 days ago.
4242
0.0
3 vita_user
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 month 4 days ago.
43993
4.5
6 Thamaraiselvam Santhanam
3850: Understanding interface configuration on NM modules
Last Reply 1 month 4 days ago.
16234
5.0
8 Richard Primm
Password Recovery on Cisco Catalyst 3850
Last Reply 1 month 5 days ago.
1916
0.0
2 Collin Clark
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 1 month 1 week ago.
120
0.0
2 Ty Gadberry
Route to Host Stuck on Switch
Last Reply 1 month 1 week ago.
2729
5.0
4 martinez-adrian
Single-sided vs double-sided vpc
Last Reply 1 month 2 weeks ago.
8985
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 1 month 3 weeks ago.
6969
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 1 month 3 weeks ago.
3737
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 1 month 3 weeks ago.
7064
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 1 month 3 weeks ago.
21
0.0
0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 month 3 weeks ago.
101151
4.0
1 Shaun Hummel
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 1 month 3 weeks ago.
41969
5.0
12 SunilKhanna
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 2 months 1 day ago.
396
0.0
0 TCC_2
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 2 months 3 weeks ago.
17639
4.6
12 jakula
blog License Activation on 4500
Last Reply 6 months 6 days ago.
194
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 6 months 1 week ago.
7137
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 9 months 1 week ago.
2253
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 9 months 1 week ago.
15935
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 9 months 4 weeks ago.
39857
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 11 months 1 week ago.
5965
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 11 months 2 weeks ago.
386
5.0
0 Francine Richards
blog Upcoming Ask the Expert Event with Cisco Designated VIP Marwan Al-shawi May 12-23
Last Reply 11 months 2 weeks ago.
123
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 11 months 3 weeks ago.
107
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 3 days ago.
321
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 2 weeks ago.
1327
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 2 weeks ago.
743
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 2 weeks ago.
92
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 1 year 2 weeks ago.
24506
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 3 weeks ago.
7921
5.0
9 rucjain
blog Chalk Talk: The Secret to Successful QoS Deployments: A Well-Defined End-to-End QoS Strate
Last Reply 1 year 3 weeks ago.
273
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 1 month ago.
5338
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 4 months ago.
1615
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 8 months ago.
1842
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 9 months ago.
2289
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 1 year 9 months ago.
15663
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 5 months ago.
4232
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 6 months ago.
5820
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 2 years 9 months ago.
10429
5.0
7 pnagpal
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