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, We are looking at a scenario where we have a 3825 router with a connection to an ISP, say G0/0.102 (it is a virtual subinterface, substantia...
4 min 32 sec ago
Hi Community, Suppose the following scenario:  (SVI Vlan X )--- 3750----------L3 link ------6509--------L3 link-------6513------(L2 only Vlan X) ¿C...
2 hours 20 min ago
I am trying to set up an erspan session between a Nexus 7K and Cat6K. The 7K has multiple VDCs.The documentation all seems to show a 7K config with...
9 hours 54 min ago
Hello Everyone, Im trying to build a VPN connection between 2 devices (Cisco and Zywall USG 20), both devices are in the same network for testing p...
11 hours 56 min ago
hi,how to disable sync for snmpv3 user and cli user in Nexus 7K.We put the keyword localizedkey at the end, still the snmpv3 user got created as cl...
12 hours 43 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 NAT inside for a remote private subnet (over IPSec VPN) without a dedicated interface
Last Reply 4 min 32 sec ago.
0 0 0.0 0 Nikolaos Milas
discussion In OSPF why we create Area 0 ? If i do not want to create can i start area 1
Last Reply 6 min 5 sec ago.
0 0 5 4 InayathUlla Sharieff
discussion QOS/DSCP configuration Question
Last Reply 2 hours 2 min ago.
79 0 5 17 ThusithaK1
discussion SCP Copy
Last Reply 2 hours 9 min ago.
0 0 0.0 6 steve-fuller
discussion Nexus and 3850 QoS
Last Reply 2 hours 11 min ago.
45 0 0.0 1 ThusithaK1
discussion L2 over GRE on Catalyst Switches
Last Reply 2 hours 20 min ago.
0 0 0.0 0 Andres Franco
discussion high cpu due to ipv6 multicast traffic from clients in cisco 4506-E switch
Last Reply 2 hours 25 min ago.
192 0 0.0 5 Vlad Vyakin
discussion Issues With My Layer3 link
Last Reply 10 hours 18 min ago.
0 0 0.0 2 easamoah1
discussion Can you define speed of cable ?
Last Reply 3 hours 52 min ago.
0 0 0.0 1 CHARLES HILL
discussion how to distinguish genuine cisco products to imitation
Last Reply 4 hours 52 min ago.
0 0 5 3 CHARLES HILL
discussion NME-16ES-1G-P on non-poe router
Last Reply 5 hours 16 min ago.
46 0 0.0 6 John_in_NZ
discussion NME-16ES-1G-P Gi1/0/1 Disconnects
Last Reply 5 hours 22 min ago.
0 0 0.0 1 John_in_NZ
discussion Switching ARP Problems
Last Reply 6 hours 46 min ago.
0 1 0.0 1 Reza Sharifi
discussion Help Getting Started
Last Reply 7 hours 56 sec ago.
0 0 0.0 1 InayathUlla Sharieff
discussion WS-C3850-24P Layer 2
Last Reply 7 hours 50 min ago.
0 0 0.0 1 InayathUlla Sharieff
discussion redundancy between 3650 switches without stack
Last Reply 9 hours 2 min ago.
0 0 0.0 1 Reza Sharifi
discussion Static Routing on WS-C2960G-48TC-L
Last Reply 9 hours 13 min ago.
0 0 5 1 Reza Sharifi
discussion Spanning tree instance for vlan xxx does not exist
Last Reply 9 hours 38 min ago.
0 0 5 2 sadqazi
discussion ERSPAN between Nexus 7K and Catalyst 6K
Last Reply 9 hours 54 min ago.
0 0 0.0 0 Robert Falconer
discussion Help finding ios upgrade procedure for 3560-x
Last Reply 10 hours 9 min ago.
0 0 0.0 1 Leo Laohoo
discussion Uplinking VM Host to SFP on 2960x?
Last Reply 10 hours 53 min ago.
0 0 0.0 3 Reza Sharifi
discussion IPSec connection Cisco 867 --> Zywall USG 20
Last Reply 11 hours 56 min ago.
0 0 0.0 0 bjornberfelo
discussion IPv6 Link-Local Address Issue
Last Reply 11 hours 25 min ago.
0 0 5 3 cwhite0013
discussion NTP leap timer June 30, 2015
Last Reply 12 hours 36 min ago.
0 0 5 4 Noel D'souza
discussion how to disable sync for snmpv3 user and cli user in Nexus 7K
Last Reply 12 hours 43 min ago.
0 0 0.0 0 jithu murickal
Filter Results
Subject Views Rating Comments Author
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 7 min 28 sec ago.
104405
4.7
51 ashirkar
Egress QOS
Last Reply 1 day 18 hours ago.
50321
5.0
12 somgupta
Cisco 891 fresh configuration/management without console cable
Last Reply 1 week 5 days ago.
0
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 1 week 5 days ago.
0
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 1 week 5 days 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 3 weeks 5 days ago.
23162
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 3 weeks 6 days ago.
84068
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 6 years 1 week ago.
3959
0.0
0 TCC_2
3850 Boot Mode
Last Reply 1 month 2 days ago.
1203
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 1 month 4 days ago.
17396
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 1 month 2 weeks 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 4 years 4 months 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 3 weeks ago.
1972
0.0
3 Collin Clark
Configuring a router Eth int or SVI to be a DHCP client
Last Reply 6 years 1 week ago.
4322
4.0
0 TCC_2
The card in a fixed hardware configuration Cat chassis functions improperly, not online
Last Reply 6 years 1 week 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 6 years 1 week 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 6 years 1 week ago.
383
0.0
0 TCC_2
How to use Time-Domain Reflectometer (TDR)
Last Reply 2 months 1 day ago.
67347
5.0
68 Leo Laohoo
Retrieving Core files from Cisco Nexus switching platforms
Last Reply 3 years 1 week 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
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 4 months 3 weeks ago.
17786
4.6
12 jakula
blog License Activation on 4500
Last Reply 7 months 4 weeks ago.
201
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 8 months 3 days ago.
7154
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 11 months 2 days ago.
2274
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 11 months 4 days ago.
16081
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 11 months 2 weeks ago.
40336
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 1 year 3 weeks 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 1 month ago.
107
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 1 month ago.
328
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 3 years 1 month ago.
1329
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 3 years 1 week ago.
743
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 years 4 months ago.
94
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 4 years 2 months ago.
24555
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 2 years 1 month 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 2 months ago.
276
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 2 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 9 months ago.
1859
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 10 months ago.
2294
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 1 year 11 months ago.
15705
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 6 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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