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.

 what are the tools, tasks, procedures to use for network assessment?what questions to ask the customer while replacing EOL Pix firewall in order t...
2 min 23 sec ago
Hello, I'm wondering if I can get some input on some quality of service configurations I have in place on my home network and maybe provide some in...
1 hour 41 min ago
I heard somebody saying that there is a misconception in people that they think I am running IP protocols to allow communication between Computers,...
6 hours 51 min ago
Hello,We had configured dot1x on ports of Switch ports with authentication host-mode multi-domain and ports were going to err-disabled mode.This wa...
9 hours 27 min ago
Hi Team, Please any one answer my  querry. I have 3vlans which was created in my Core switch.vlan 10 10.120.234.128/25vlan 20 10.120.232.0/26vlan 3...
12 hours 34 min ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6733 569 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion network assessment and firewall selection
Last Reply 2 min 23 sec ago.
0 0 0 0 gavin han
discussion Equivalent commands for ASR9k?
Last Reply 52 min 26 sec ago.
10 0 0 2 tinhnho123
discussion Catalyst 3750 Access List to prevent IP Stealing
Last Reply 1 hour 5 min ago.
91 0 5 15 smithster5683
discussion QoS for home use
Last Reply 1 hour 41 min ago.
0 0 0 0 bayates826
discussion Cisco ASA static routing to Cisco 831. help with ACL maybe?
Last Reply 3 hours 25 min ago.
48 0 0 11 Joe Carey
discussion IP protocol is not to communicate between computers in a LAN.
Last Reply 6 hours 51 min ago.
0 0 0 0 Muhammad Thanveer
discussion can HRSP / VRRP be use in the such setup ?
Last Reply 7 hours 2 min ago.
0 0 0 1 Reza Sharifi
discussion Dot1x with Multi-Domain vs Multi-Auth
Last Reply 9 hours 27 min ago.
2 0 0 0 CSCO11854658
discussion jarbled commands when transferring copied config from one switch to another
Last Reply 10 hours 3 min ago.
13 0 0 2 paul driver
discussion Are static routes redistributed into EIGRP also redistributed into BGP with "redistribute eigrp" command?
Last Reply 11 hours 42 min ago.
19 0 0 2 Mohammad Moghaddas
discussion WDS server Reachablilty
Last Reply 12 hours 34 min ago.
2 0 0 0 anirudh12b9
discussion 7606S booting to Rommon..Help!!
Last Reply 13 hours 34 min ago.
67 0 4 8 een4hc007
discussion 3850 and Intermittent TACACS issue
Last Reply 22 hours 15 min ago.
26 0 0 2 chrbradf1
discussion How many area can be configuration include one ospf process id?
Last Reply 22 hours 48 min ago.
4 0 0 0 YongFeng He
discussion 3750-X power stack
Last Reply 23 hours 32 min ago.
36 0 0 2 Alipio.Gobaton
discussion C3KX-SM-10G on 3750X - version info and upgrade instructions
Last Reply 1 day 1 hour ago.
13311 2 1 7 will@bootit.com
discussion Configuring a SM-X Layer 2/3 EtherSwitch Service Module on a 4331 router
Last Reply 1 day 4 hours ago.
407 1 5 4 pratikbhai patel
discussion WAN switch (in a rack) - what is it used and why do we need it ?
Last Reply 1 day 4 hours ago.
47 0 5 4 KOH SZE JIE
discussion Not seeing devices on other switches
Last Reply 1 day 5 hours ago.
20 0 0 3 nalonsopresidio
discussion High Number of Out Discards on 2960x Switches
Last Reply 1 day 5 hours ago.
74 0 0 13 Dave Cancela
discussion switchport voice vlan and DHCP on Windows 2012 server
Last Reply 1 day 6 hours ago.
7 0 0 0 jjalward77
discussion DMZ to Internet Access Question
Last Reply 1 day 6 hours ago.
4 0 0 0 mweiner5641
discussion 3850 switch stack ports
Last Reply 1 day 8 hours ago.
14 0 0 1 jhager001
discussion How to configure ip helper in Nexus 7000
Last Reply 1 day 8 hours ago.
11231 0 4.8 3 graemerappoport
discussion Cisco 3750 3650 switches SSH issue
Last Reply 1 day 8 hours ago.
121 0 5 34 Adam Hudson
Filter Results
Subject Views Rating Comments Author
%C4K_SUPERVISOR-2-SOFTERROR / %C4K_SUPERVISOR-2-FPGASOFTERROR
Last Reply 10 hours 46 min ago.
0
0.0
0 InayathUlla Sharieff
Egress QOS
Last Reply 11 hours 39 min ago.
53645
5.0
14 somgupta
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 3 days 9 hours ago.
51445
4.6
7 Thamaraiselvam Santhanam
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 week 10 hours ago.
83
0.0
0 Luis Villanueva Brito
Properly Installing Cisco USB Console Driver
Last Reply 1 week 2 days ago.
101
0.0
1 lsgabrillo
How to define the VLANs allowed on a trunk link
Last Reply 1 week 4 days ago.
186787
5.0
3 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 2 weeks 6 days ago.
50296
4.7
53
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 2 weeks 6 days ago.
5936
5.0
5 Furose Khan Mohammed Ali
Error Message:%ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface <interface> Power Controller reports power Imax error detected
Last Reply 4 weeks 1 day ago.
13720
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 month 5 hours ago.
55
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 month 1 week ago.
21375
5.0
3 Souvik Ghosh
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
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 months 1 week ago.
145
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 months 1 week ago.
45
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 2 months 2 weeks ago.
44
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 2 months 3 weeks ago.
26610
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 2 months 3 weeks ago.
99858
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 2 months 4 weeks ago.
4200
0.0
0 TCC_2
3850 Boot Mode
Last Reply 3 months 1 day ago.
1759
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 3 months 3 days ago.
19102
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 3 months 1 week ago.
85
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 3 months 2 weeks ago.
53
0.0
0 josecesp
Spanning Tree Loop Troubleshooting and Safeguards
Last Reply 3 months 2 weeks ago.
49615
5.0
2 James D Hensley
Filter Results
Subject Views Rating Comments Author
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 1 month 3 weeks ago.
26129
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 7 months 5 hours ago.
20714
4.6
12 jakula
blog License Activation on 4500
Last Reply 10 months 1 week ago.
409
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 10 months 2 weeks ago.
7382
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 1 month ago.
2515
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 1 month ago.
18651
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 2 months ago.
49570
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 1 year 3 months ago.
6673
5.0
7 Aninda Chatterjee
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 3 months ago.
122
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 Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 4 months ago.
1432
5.0
0 srereddy
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 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.
8294
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 5 months ago.
289
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 5 months ago.
7677
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 8 months ago.
1970
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 2 years 1 week ago.
2064
4.7
1 Anand G
blog Parity Error.
Last Reply 2 years 1 month ago.
2394
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 2 years 1 month ago.
16943
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 9 months ago.
4417
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 10 months ago.
5921
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 1 month ago.
11359
5.0
7 pnagpal
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