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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Hi gents,I'm deploying a pair of 4500X in VSS mode for a new customer.After preconfiguration phase and ascertaining I had a good VSS clustering in...
30 min 15 sec ago
Hi All, Need opinions here on an old 6500 catalyst switch. We kept seeing an error log of SNMP auth fail in the switch. below is the log captured a...
6 hours 13 min ago
what is the command to disable sending "connection refused" messages?
9 hours 19 min ago
I have some 2960Plus 24 switches with 15.2.1E2 Image and when I try this command; logging source-interface vlan xxx  I get this message: Specify th...
12 hours 8 min ago
Dear. I have a cisco 4500x and i need migrate to nexus 9504, but i see the Nexus 9K is not support sentences deny in the ACL within PBR, somebody h...
15 hours 14 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 VSS Switchover problem
Last Reply 47 sec ago.
0 0 0 2 madhumavelikara
discussion Nexus 3548 not able to ping directly connected devices
Last Reply 1 min 26 sec ago.
2 0 0 1 Manoj Papisetty
discussion ntp is not working in nexus 5500
Last Reply 4 min 13 sec ago.
14 0 0 2 Majed Zouhairy
discussion Suspended LACP Ports and Their Implication
Last Reply 9 min 35 sec ago.
2 0 0 1 steve-fuller
discussion CCO Account
Last Reply 10 min 18 sec ago.
492 0 0 2 shabbir01
discussion Catalyst 3750 to Nexus 93128
Last Reply 23 min 4 sec ago.
5 0 0 1 steve-fuller
discussion VSS not reinstating after blackout
Last Reply 30 min 15 sec ago.
0 0 0 0 JORGE FERNANDEZ...
discussion Upgrading IOS from 12.2(55)SE3 to 15.0.2-SE8
Last Reply 45 min 31 sec ago.
167 1 5 3 Leo Laohoo
discussion Rackmount kit for C3750G-24WS-S25
Last Reply 1 hour 20 min ago.
22 0 0 6 jsachnet1
discussion Port 49 Failing Scheduled Diagnostic
Last Reply 2 hours 7 min ago.
4 0 0 1 InayathUlla Sharieff
discussion SPAN Session in 3750 STACK?
Last Reply 2 hours 11 min ago.
6 0 0 1 InayathUlla Sharieff
discussion vlan question
Last Reply 2 hours 15 min ago.
42 0 5 3 InayathUlla Sharieff
discussion connecting my cisco 2950g switch to my wireless router
Last Reply 3 hours 19 min ago.
3 0 0 1 johnlloyd_13
discussion Issue with Switch Stack "Unprovisioned" and Active Switch that is not present in the stack
Last Reply 3 hours 38 min ago.
8 0 0 1 Leo Laohoo
discussion Root port selection
Last Reply 5 hours 14 min ago.
73 0 0 20 gregorydhenderson1
discussion SNMP auth fail | Network Analysis Module 6500
Last Reply 6 hours 13 min ago.
2 0 0 0 Anuar Shahrin
discussion ACL on Int VLAN Help
Last Reply 8 hours 45 min ago.
54 0 0 6 paul driver
discussion Accessing switch web management
Last Reply 9 hours 13 min ago.
46 0 0 6 rosaho
discussion Deny sending Connection Refused messages
Last Reply 9 hours 19 min ago.
4 0 0 0 dean.anderson@k...
discussion 4500x InterVLAN routing. Clients can't ping clients on different VLANS?
Last Reply 9 hours 31 min ago.
59 0 5 6 SalientsysIT
discussion CIWRP500-Z-K9 'striped' encryption - what does that mean?
Last Reply 9 hours 54 min ago.
11 0 5 2 MICHAEL TAYLOR
discussion SIP Priority / VOIP QoS issues
Last Reply 10 hours 5 min ago.
28 0 0 8 Adam Hudson
discussion What is the difference between SFP-GE-T and GLC-T?
Last Reply 10 hours 14 min ago.
16050 0 4.91667 5 CSCO10662744_2
discussion 2 office network with diff. ip segment on 1 link.
Last Reply 10 hours 24 min ago.
49 0 0 1 joshuacmoore
discussion can HRSP / VRRP be use in the such setup ?
Last Reply 11 hours 22 min ago.
85 0 5 11 Jon Marshall
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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