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 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...
56 min 46 sec ago
Hello All, I wasn't sure where to post this question, but we'll start here and see what happens. I'm interested in furthering my knowledge of netwo...
2 hours 2 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...
2 hours 59 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...
3 hours 46 min ago
%SW_MATM-4-MACFLAP_NOTIF: Host 0007.b400.0101 in vlan 530 is flapping between port Te0/1 and port Te0/2 %SW_MATM-4-MACFLAP_NOTIF: Host 0007.b400.01...
7 hours 25 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 redundancy between 3650 switches without stack
Last Reply 5 min 10 sec ago.
0 0 0.0 1 Reza Sharifi
discussion Static Routing on WS-C2960G-48TC-L
Last Reply 16 min 10 sec ago.
0 0 0.0 1 Reza Sharifi
discussion Spanning tree instance for vlan xxx does not exist
Last Reply 41 min 25 sec ago.
0 0 5 2 sadqazi
discussion ERSPAN between Nexus 7K and Catalyst 6K
Last Reply 56 min 46 sec ago.
0 0 0.0 0 Robert Falconer
discussion Help finding ios upgrade procedure for 3560-x
Last Reply 1 hour 12 min ago.
0 0 0.0 1 Leo Laohoo
discussion Uplinking VM Host to SFP on 2960x?
Last Reply 1 hour 55 min ago.
0 0 0.0 3 Reza Sharifi
discussion Help Getting Started
Last Reply 2 hours 2 min ago.
0 0 0.0 0 Chris Mickle
discussion IPSec connection Cisco 867 --> Zywall USG 20
Last Reply 2 hours 59 min ago.
0 0 0.0 0 bjornberfelo
discussion IPv6 Link-Local Address Issue
Last Reply 2 hours 28 min ago.
0 0 5 3 cwhite0013
discussion NTP leap timer June 30, 2015
Last Reply 3 hours 38 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 3 hours 46 min ago.
0 0 0.0 0 jithu murickal
discussion SCP Copy
Last Reply 4 hours 38 min ago.
0 0 0.0 5 William Coats
discussion Packet Tracer Exercise
Last Reply 5 hours 9 min ago.
0 0 0.0 2 Dan Lukes
discussion unable to ping server
Last Reply 5 hours 11 min ago.
0 0 0.0 4 santhanamanush
discussion Erasing the configuration on 4500 having two supervisor engines
Last Reply 6 hours 22 min ago.
0 0 0.0 3 InayathUlla Sharieff
discussion EtherChannel using L3
Last Reply 6 hours 28 min ago.
0 0 0.0 22 Jeff Harned
discussion GLBP IP SLA icmp readability
Last Reply 7 hours 17 min ago.
0 0 0.0 3 Dean Romanelli
discussion glbp causing mac flap
Last Reply 7 hours 25 min ago.
0 0 0.0 0 michael.quill
discussion Enabling Jumbo frames
Last Reply 7 hours 38 min ago.
0 0 5 2 yves.haemmerli
discussion Nexus 1000V - upgrading and required secondary VSM
Last Reply 7 hours 43 min ago.
0 0 0.0 1 CHARLES HILL
discussion how to distinguish genuine cisco products to imitation
Last Reply 9 hours 22 min ago.
0 0 0.0 1 CHARLES HILL
discussion VLAN over multiple routers or Multi-VLANs over one subnet
Last Reply 10 hours 34 min ago.
0 0 0.0 3 shawnguertin
discussion Faulty Sup720-3B - Can I hot swap in the replacement ?
Last Reply 10 hours 40 min ago.
0 0 0.0 2 Reza Sharifi
discussion Question: Why no spanning-tree vlan 1? on the switch
Last Reply 11 hours 40 min ago.
4155 0 0.0 7 Joseph W. Doherty
discussion TTL value changes dynamically /variation in TTL value on a Cisco linksys wireless router?
Last Reply 12 hours 9 min ago.
0 0 0.0 0 vasanth77
Filter Results
Subject Views Rating Comments Author
Egress QOS
Last Reply 2 min 33 sec ago.
50321
5.0
12 somgupta
Cisco 891 fresh configuration/management without console cable
Last Reply 1 week 3 days ago.
0
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 1 week 3 days ago.
0
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 1 week 3 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 20 hours 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 4 days ago.
23162
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 3 weeks 4 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 6 days ago.
3959
0.0
0 TCC_2
3850 Boot Mode
Last Reply 1 month 8 hours ago.
1203
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 1 month 2 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 1 week 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
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 month 2 weeks ago.
104405
4.7
50 ashirkar
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 2 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 6 days ago.
4322
4.0
0 TCC_2
The card in a fixed hardware configuration Cat chassis functions improperly, not online
Last Reply 6 years 6 days 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 6 days 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 6 days ago.
383
0.0
0 TCC_2
How to use Time-Domain Reflectometer (TDR)
Last Reply 1 month 4 weeks 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 6 days 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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