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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I am testing and creating a MOP for upgrading our Supervisor 1 to Supervisor 2E on our production Nexus 7010 chassis using NXOS 6.2(12).Does anybod...
37 min 19 sec ago
Hello All, We were trying to add a vlan on one of the downstream access switches when we found that it wasn't showing the correct root for this vla...
2 hours 16 min ago
Polycom Soundpoint IP 330 phone will not register with Asterisk server through SPA122. Problem seems to be that the port the Polycom is coming into...
5 hours 8 min ago
We have a WS-C6513 Chassis that is the Layer2/Layer3 Core for our network running 12.2.18 SXF(17)b.  We have an automated system that compares the...
8 hours 37 min ago
Hi Experts, I'm trying to figure out what the "new" option behind software install is all about.The Command Reference doesn't help me much:"(option...
8 hours 42 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 IP protocol is not to communicate between computers in a LAN. Is that true?
Last Reply 4 min 49 sec ago.
26 0 5 3 Muhammad Thanveer
discussion Nexus 7010 Supervisor 1 to Supervisor 2E using NX-OS 6.2(12)
Last Reply 36 min 23 sec ago.
0 0 0 0 espmolina
discussion Tagging Connected Routes - EIGRP
Last Reply 53 min 56 sec ago.
4 0 0 1 Rolf Fischer
discussion 4500x InterVLAN routing. Clients can't ping clients on different VLANS?
Last Reply 1 hour 3 min ago.
74 0 5 11 Robin Swan
discussion Duplicate VLAN 2811
Last Reply 1 hour 45 min ago.
0 0 0 1 Pat Kinnison
discussion stp guard loop
Last Reply 2 hours 16 min ago.
0 0 0 0 suthomas1
discussion SNMP auth fail | Network Analysis Module 6500
Last Reply 2 hours 30 min ago.
3 0 0 2 amikat
discussion QOS in a Campus network
Last Reply 2 hours 56 min ago.
4 0 0 1 Reza Sharifi
discussion BGP routes not advertised to peer on ASR
Last Reply 3 hours 12 min ago.
6 0 5 2 MohaLeen1
discussion WS-4500X
Last Reply 3 hours 31 min ago.
10 0 0 1 Reza Sharifi
discussion Suspended LACP Ports and Their Implication
Last Reply 3 hours 35 min ago.
4 0 0 3 visitor68
discussion Rackmount kit for C3750G-24WS-S25
Last Reply 4 hours 34 min ago.
27 0 0 7 jhager001
discussion Not able to ping Management Tools
Last Reply 4 hours 42 min ago.
37 0 0 10 Manu Shankar
discussion SPA122 with Polycom Soundpoint IP
Last Reply 4 hours 43 min ago.
0 0 0 0 JenniferMIS
discussion Can not add hsrp ip address in one of two Nexus 7000
Last Reply 5 hours 1 min ago.
1 0 0 4 InayathUlla Sharieff
discussion Port 49 Failing Scheduled Diagnostic
Last Reply 6 hours 37 min ago.
4 0 0 2 weylin.piegorsch
discussion Cisco Nexus 5648Q Compatibility
Last Reply 7 hours 39 min ago.
2 0 5 2 manyuccna
discussion 20Gbps Port channel discards - Nexus 7k Default Policy
Last Reply 7 hours 40 min ago.
6 0 0 3 Manoj Papisetty
discussion NX-OS logging: Can I avoid "last message repeated 1 time" compression of logs?
Last Reply 8 hours 1 min ago.
0 0 5 1 David Aicher
discussion Catalyst 3750 to Nexus 93128
Last Reply 8 hours 21 min ago.
5 0 0 2 scottcummins
discussion Configure switchport port-security limit rate invalid-source-mac
Last Reply 8 hours 29 min ago.
3 0 0 0 Mark Thomas
discussion Cisco 6513 bridge-group riddle?
Last Reply 8 hours 37 min ago.
0 0 0 0 Pat Kinnison
discussion IOS-XE: Software install with "new" option
Last Reply 8 hours 41 min ago.
0 0 0 0 jmandersson
discussion SIP Priority / VOIP QoS issues
Last Reply 8 hours 44 min ago.
30 0 0 10 Adam Hudson
discussion "Received BPDU with inconsistent peer" when adding VLAN
Last Reply 8 hours 48 min ago.
106 0 5 11 jmandersson
Filter Results
Subject Views Rating Comments Author
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 16 hours 55 min ago.
295178
5.0
38
The "%SPANTREE-7-BLOCK_PORT_TYPE : Blocking [chars] on [chars]. Inconsistent port type" message is logged on Cisco Catalyst switches
Last Reply 2 days 23 hours ago.
18681
0.0
2 TCC_2
%C4K_SUPERVISOR-2-SOFTERROR / %C4K_SUPERVISOR-2-FPGASOFTERROR
Last Reply 5 days 20 hours ago.
4
0.0
0 InayathUlla Sharieff
Egress QOS
Last Reply 5 days 21 hours ago.
53764
5.0
14 somgupta
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 1 day ago.
51946
4.6
7 Thamaraiselvam Santhanam
How to Form a Catalyst 3850 Data-Stack and Power-Stack
Last Reply 1 week 5 days ago.
110
0.0
0 Luis Villanueva Brito
Properly Installing Cisco USB Console Driver
Last Reply 2 weeks 21 hours ago.
118
0.0
1 lsgabrillo
How to define the VLANs allowed on a trunk link
Last Reply 2 weeks 2 days ago.
188483
5.0
3 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 3 weeks 4 days ago.
125504
4.7
53
3850 switch - IOS XE upgrade Detailed (standalone)
Last Reply 3 weeks 4 days ago.
6130
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 1 month 4 days ago.
13780
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 month 5 days ago.
61
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 month 1 week ago.
21617
5.0
3 Souvik Ghosh
SSH version 2 no IOS cat4000-i5s-mz.122-25.EWA14.bin
Last Reply 1 month 2 weeks ago.
24
0.0
1 Sergio Alvares
Cisco Nexus 7000 / 7700 Line Cards
Last Reply 1 month 2 weeks ago.
156
0.0
0 Shaun Hummel
Cisco 891 fresh configuration/management without console cable
Last Reply 2 months 2 weeks ago.
35
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 months 2 weeks ago.
148
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 months 2 weeks ago.
45
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 2 months 3 weeks ago.
45
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 3 months 1 day ago.
26837
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 3 months 1 day ago.
101082
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 3 months 5 days ago.
4231
0.0
0 TCC_2
3850 Boot Mode
Last Reply 3 months 6 days ago.
1810
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 3 months 1 week ago.
19251
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 3 months 2 weeks ago.
87
0.0
4 npsangvt1
Filter Results
Subject Views Rating Comments Author
blog Loading an IOS on a switch via Xmodem
Last Reply 1 day 13 hours ago.
50184
5.0
8 Aninda Chatterjee
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 2 months 1 day ago.
26212
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 7 months 6 days ago.
20838
4.6
12 jakula
blog License Activation on 4500
Last Reply 10 months 2 weeks ago.
421
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 10 months 3 weeks ago.
7386
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 1 month ago.
2523
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 1 month ago.
18788
5.0
3 ajaju
blog Configuring a frame-relay switch
Last Reply 1 year 3 months ago.
6704
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 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.
404
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 4 months ago.
1434
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.
8312
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.
7841
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 9 months ago.
514
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 2 years 2 weeks ago.
2070
4.7
1 Anand G
blog Parity Error.
Last Reply 2 years 1 month ago.
2397
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 2 years 1 month ago.
16998
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 9 months ago.
4424
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 10 months ago.
5922
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 1 month ago.
11401
5.0
7 pnagpal
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