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,I want to make the L3 remote SPAN to make the PSTN voice logging function.Actually, I have to compare the VLAN 142 and VLAN 212, because I have...
1 hour 10 min ago
Hi all,It's been awhile, i hope everyone is doing fine. I have a new 10port gigabit switch with me (cisco 200 series smart switch),   its interface...
1 hour 43 min ago
Hi,We recently have an incident, Some of our manufacturing tools are using legacy devices and a user connects a new PC to the network, has a softwa...
1 hour 56 min ago
Hello, I have this problem and I did a research with regards to the setup. I'd followed several tuts and suggestion but none of them works. I would...
4 hours 5 min ago
Hello to all, SW1 is located outside my network, while SW2 is a simple switch, SW3 is 3560g cisco and this the config:User Access VerificationPassw...
7 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 I Can't write the "ip multicast-routing..." command
Last Reply 6 sec ago.
28 0 0.0 5 sefimizra
discussion Cisco Storm Control on Catalyst 6500
Last Reply 10 min 32 sec ago.
0 0 0.0 1 InayathUlla Sharieff
discussion Making 3560 switch receive only??
Last Reply 1 hour 10 min ago.
0 0 0.0 0 encapsulation1
discussion vlan can't connect to the internet.
Last Reply 1 hour 10 min ago.
1 0 0.0 0 rkent649649
discussion Remote SPAN on Layer 3
Last Reply 1 hour 10 min ago.
0 0 0.0 0 Chi Fai Leung
discussion voice and data vlan together - need a trunk port / how it works ?
Last Reply 1 hour 43 min ago.
0 0 0.0 0 KOH SZE JIE
discussion Storm-control Value to choose ?
Last Reply 1 hour 56 min ago.
0 0 0.0 0 riyasrasheed
discussion C3560G and C2960's intervlan routing issue
Last Reply 1 hour 56 min ago.
29 0 0.0 6 chsarkar
discussion SFP power problem
Last Reply 3 hours 8 min ago.
5 0 5 3 Reza Sharifi
discussion Is it possible to remame a VDC on a Nexus 7000?
Last Reply 3 hours 46 min ago.
3708 2 5 5 InayathUlla Sharieff
discussion Native VLAN mismatch
Last Reply 3 hours 49 min ago.
25 0 5 3 InayathUlla Sharieff
discussion Routing Bit Set on LSA for NX-OS
Last Reply 8 hours 8 min ago.
6 0 0.0 0 Plinio Brandao
discussion Extended access list/route map question
Last Reply 8 hours 52 min ago.
0 0 4.93333 6 vivek srivastava
discussion Routing
Last Reply 8 hours 56 min ago.
0 0 3.5 6 vivek srivastava
discussion Nexus vPC to Arista MLAG
Last Reply 8 hours 57 min ago.
8 0 0.0 2 tporembski
discussion WS-C3850-12S-S with WS-C3650-24TD-S 10Gig Connection
Last Reply 9 hours 38 min ago.
0 0 4 3 Jasaatum_89
discussion L2 EtherChannel Load Balancing
Last Reply 10 hours 9 min ago.
43 0 5 5 jplenbrook
discussion "Received BPDU with inconsistent peer" when adding VLAN
Last Reply 10 hours 33 min ago.
42 0 0.0 9 jmandersson
discussion Cisco Nexus 6004 and Mellanox QSFP
Last Reply 10 hours 41 min ago.
27 0 0.0 7 Reza Sharifi
discussion CRC and Undersize errors
Last Reply 11 hours 28 min ago.
25 0 0.0 2 edisonguerrero
discussion Power Consumption Calculation
Last Reply 11 hours 52 min ago.
32 0 0.0 2 Mohammed Moqbel
discussion Setting EIGRP Route Preference on subinterfaces
Last Reply 12 hours 16 min ago.
19 0 5 2 Pkirchgessner1
discussion NAT with VPN ipsec client
Last Reply 13 hours 3 min ago.
9 0 0.0 1 le180921081
discussion Switch Stops Responding
Last Reply 13 hours 23 min ago.
29 0 0.0 3 davies_admin
discussion strom control limitation on 6509 running 12.2.33.sxi6
Last Reply 14 hours 6 min ago.
9 0 0.0 1 mark malone
Filter Results
Subject Views Rating Comments Author
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 2 days 34 min ago.
50293
4.7
51 ashirkar
Egress QOS
Last Reply 3 days 18 hours ago.
50321
5.0
12 somgupta
Cisco 891 fresh configuration/management without console cable
Last Reply 2 weeks 7 hours ago.
0
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 weeks 11 hours ago.
0
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 weeks 17 hours ago.
0
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 3 weeks 2 days ago.
0
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 4 weeks 1 day ago.
23162
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 4 weeks 1 day ago.
84068
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 1 month 2 days ago.
3959
0.0
0 TCC_2
3850 Boot Mode
Last Reply 1 month 4 days ago.
1203
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 1 month 6 days ago.
17396
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 1 month 1 week ago.
0
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 1 month 2 weeks ago.
0
0.0
0 josecesp
Spanning Tree Loop Troubleshooting and Safeguards
Last Reply 1 month 2 weeks ago.
42740
5.0
2 James D Hensley
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 1 month 2 weeks ago.
286377
5.0
37 plumbis
The "%C4K_SWITCHMANAGER-4-S2WERRORREPORT" error message appears in the logs of a Cisco Catalyst 4500 Switch, and affects the functionality of PoE line cards
Last Reply 1 month 3 weeks ago.
7832
0.0
1 TCC_2
Password Recovery on Cisco Catalyst 3850
Last Reply 1 month 4 weeks ago.
1972
0.0
3 Collin Clark
Configuring a router Eth int or SVI to be a DHCP client
Last Reply 1 month 4 weeks ago.
4322
4.0
0 TCC_2
The card in a fixed hardware configuration Cat chassis functions improperly, not online
Last Reply 1 month 4 weeks ago.
624
0.0
0 TCC_2
How to configure a Flex Link for link-level redundancy in Cat switches that run IOS
Last Reply 1 month 4 weeks ago.
11294
0.0
0 TCC_2
%SYS-3-SYS_LCPERR3:Module X: Fatal exception occurred Cat 6k, WS-X6348-RJ45 module reset
Last Reply 1 month 4 weeks ago.
383
0.0
0 TCC_2
How to use Time-Domain Reflectometer (TDR)
Last Reply 2 months 3 days ago.
67347
5.0
68 Leo Laohoo
Retrieving Core files from Cisco Nexus switching platforms
Last Reply 2 months 5 days ago.
13282
5.0
1 Yogesh Ramdoss
Using 3850 Embedded Wireshark (Wired)
Last Reply 2 months 1 week ago.
35732
5.0
2 Colby Beam
The "%C6KENV-SP-4-MINORTEMPALARM:" error message displays in Catalyst 6500 series switches with Sup720 that runs Cisco IOS system software
Last Reply 2 months 1 week ago.
3625
0.0
1 TCC_2
Filter Results
Subject Views Rating Comments Author
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 0 sec ago.
24555
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 5 months 5 days ago.
17786
4.6
12 jakula
blog License Activation on 4500
Last Reply 8 months 2 weeks ago.
201
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 8 months 3 weeks ago.
7154
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 11 months 2 weeks ago.
2274
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 11 months 2 weeks ago.
16081
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 5 days ago.
40336
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 1 year 1 month ago.
5999
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 1 year 1 month 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 1 year 1 month ago.
124
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 1 year 2 months ago.
107
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 2 months ago.
328
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 2 months ago.
1329
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 2 months ago.
743
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 2 months ago.
94
5.0
0 jakula
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 3 months ago.
7925
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 months ago.
276
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 3 months ago.
5448
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 6 months ago.
1627
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 10 months ago.
1859
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 11 months ago.
2294
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 1 year 12 months ago.
15705
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 7 months ago.
4236
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 8 months ago.
5822
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 2 years 11 months ago.
10458
5.0
7 pnagpal
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