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 guys . I have dmvpn with 2 hubs active/standby and eigrp btw sites. one of the sites is flapping constantly with hold time expired in logs .I kn...
46 min 25 sec ago
Hi guys . I have dmvpn with 2 hubs active/standby and eigrp btw sites. one of the sites is flapping constantly with hold time expired in logs .I kn...
59 min 16 sec ago
Hi Everyone, This is my first post here. Until now I was only reading others posts - hope I can join and be more active as my knowledge will increa...
1 hour 32 min ago
Hi Everyone, This is my first post here. Until now I was only reading others posts - hope I can join and be more active as my knowledge will increa...
1 hour 34 min ago
Best regards I have three switches (2960)in my network. They receive connections by a switch core (4507), links of FO. This switch is a master for...
2 hours 54 sec ago
         
IP SLA 325 3 0 0 0
Routers 2 0 0 0 0
Switches 6738 569 6 1 0
Filter Results
Subject Views Votes Rating Replies Last replied by
discussion Switch C2960S
Last Reply 2 min 11 sec ago.
0 0 0.0 9 eugel.prosper1
discussion DMVPN is flapping how to change EIGRP values
Last Reply 46 min 25 sec ago.
0 0 0.0 0 Bekzod Fakhriddinov
discussion DMVPN is flapping how to change EIGRP values
Last Reply 59 min 16 sec ago.
0 0 0.0 0 Bekzod Fakhriddinov
discussion simple switch config with firewall as gateway
Last Reply 1 hour 32 min ago.
0 0 0.0 0 maciej.garcarz
discussion simple switch config with firewall as gateway
Last Reply 1 hour 34 min ago.
0 0 0.0 0 maciej.garcarz
discussion Switch C2960S
Last Reply 2 hours 54 sec ago.
0 0 0.0 0 eugel.prosper1
discussion N2K airflow issue
Last Reply 2 hours 8 min ago.
0 0 0.0 3 markmalone2008
discussion Speed limit trunk
Last Reply 2 hours 44 min ago.
0 0 0.0 0 Anna_Katona
discussion bug IOSd crash: Segmentation fault(11), Process = CDP Protocol CSCuq34528
Last Reply 4 hours 1 min ago.
0 0 0.0 1 markmalone2008
discussion Limit bandwidth on 6509 switchport
Last Reply 4 hours 9 min ago.
0 0 0.0 0 n@ppy_1422
discussion Inter VLAN routing on 3560 switch, and connection to router
Last Reply 4 hours 11 min ago.
32 0 0.0 4 CHARLES HILL
discussion GVRP not working on Cisco SG300-28
Last Reply 4 hours 53 min ago.
1917 0 0.0 3 Antonio Ricciar...
discussion Wrong election of root bridge SG200-18
Last Reply 6 hours 36 min ago.
0 0 0.0 0 riovenitti
discussion QoS: srr-queue bandwidth share / shape query
Last Reply 6 hours 37 min ago.
9220 0 0.0 3 aananda
discussion VSS IOS upgrade..
Last Reply 6 hours 57 min ago.
9 0 4 2 Siddharam M
discussion FWSM/Cat 6500 - Traffic from fwsm context hitting RP -> high interrupts
Last Reply 7 hours 41 min ago.
10 0 0.0 1 Malette40
discussion Cisco 3650 not working with Cisco 8831 Conference IP phone
Last Reply 8 hours 25 min ago.
2 1 0.0 1 jhapu
discussion Understanding the Active-Active HSRP with vPC on Cisco Nexus.
Last Reply 8 hours 40 min ago.
9 0 0.0 2 InayathUlla Sharieff
discussion pinging to remote broadcast address - cant understand the response.
Last Reply 10 hours 36 min ago.
11 0 0.0 1 szejiekoh
discussion Can only ping one way.
Last Reply 12 hours 2 min ago.
17 0 5 3 johnlloyd_13
discussion CIsco Catalyst 4507R DHCP relay and server
Last Reply 13 hours 28 min ago.
16 0 0.0 0 wbdumangeng
discussion UCS FI 6100 "timebomb"?
Last Reply 15 hours 33 min ago.
2 0 0.0 0 gorton.steve
discussion Cisco 2960-S Switch 10GB port disabled because of non-compliant converter??
Last Reply 16 hours 51 min ago.
24 0 0.0 5 dougstringham
discussion Cisco 3650 RJ-45 Console Port Unavailable
Last Reply 18 hours 32 min ago.
5 0 0.0 0 nick-tompkins
discussion Nexus 5548UP
Last Reply 18 hours 36 min ago.
6 0 0.0 1 gmagno001
Filter Results
Subject Views Rating Comments Author
Retrieving Core files from Cisco Nexus switching platforms
Last Reply 21 hours 14 min ago.
13282
5.0
1 Yogesh Ramdoss
Using 3850 Embedded Wireshark (Wired)
Last Reply 6 days 50 min ago.
35711
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 6 days 8 hours ago.
3623
0.0
1 TCC_2
Understanding SPAN,RSPAN,and ERSPAN
Last Reply 6 days 22 hours ago.
33926
4.7
6
Temperature alarms on WS-X6904-40G
Last Reply 1 week 5 days ago.
8
5.0
0 Madhukrishnan Gopinathan Nair
How to configure an IP access list to control directed broadcasts for the Wake-on-LAN setup
Last Reply 1 week 5 days ago.
2803
0.0
1 TCC_2
Nexus - vPC Recommendations
Last Reply 2 weeks 8 hours ago.
18533
5.0
3 pnagpal
Increased Total output drops/OutDiscards by QoS for Desktop Series Switches Products
Last Reply 3 weeks 11 hours ago.
16
0.0
0 Csc TsWebDocs
Telnet session to FWSM module disconnects due to MTU size issues in 6500 or 7600 switches
Last Reply 3 weeks 6 days ago.
1412
0.0
0 TCC_2
X2-10GB-LRM vs X2-10GB-SR compatability
Last Reply 3 weeks 6 days ago.
1399
0.0
9 yogesh rajguru
Fortify Your LAN with Cisco Catalyst Switching - FAQ from live webcast
Last Reply 4 weeks 3 hours ago.
139
5.0
0 Anim Saxena
QoS marking based on the “trust dscp” IOS CLI command
Last Reply 4 weeks 1 day ago.
24
0.0
0 ben.epskamp
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - FAQ from live webcast
Last Reply 1 month 2 days ago.
4784
5.0
2
The %SUPQ-4-CPUHB_RECV_STARVE: Still seeing receive queue stuck after throttling error message is displayed in the logs of Cisco Catalyst 2970, Catalyst 3560, or Catalyst 3750 Metro series switches running Cisco IOS System Software
Last Reply 1 month 1 week ago.
7119
0.0
1 TCC_2
SNMP Engine over 80% CPU 100%!!! ?
Last Reply 1 month 1 week ago.
4256
0.0
3 vita_user
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 month 1 week ago.
44267
4.5
6 Thamaraiselvam Santhanam
3850: Understanding interface configuration on NM modules
Last Reply 1 month 1 week ago.
16430
5.0
8 Richard Primm
Password Recovery on Cisco Catalyst 3850
Last Reply 1 month 1 week ago.
1938
0.0
2 Collin Clark
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 1 month 2 weeks ago.
124
0.0
2 Ty Gadberry
Route to Host Stuck on Switch
Last Reply 1 month 2 weeks ago.
2737
5.0
4 martinez-adrian
Single-sided vs double-sided vpc
Last Reply 1 month 3 weeks ago.
9013
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 1 month 4 weeks ago.
6981
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 1 month 4 weeks ago.
3744
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 1 month 4 weeks ago.
7069
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 1 month 4 weeks ago.
21
0.0
0 pnagpal
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 2 months 4 weeks ago.
17738
4.6
12 jakula
blog License Activation on 4500
Last Reply 6 months 1 week ago.
198
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 6 months 2 weeks ago.
7146
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 9 months 2 weeks ago.
2270
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 9 months 2 weeks ago.
16023
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 10 months 4 days ago.
40156
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 11 months 2 weeks ago.
5983
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 11 months 3 weeks 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 11 months 3 weeks ago.
123
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 12 months 3 days ago.
107
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 1 week ago.
328
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 3 weeks ago.
1329
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 3 weeks ago.
743
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 3 weeks ago.
92
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 1 year 3 weeks ago.
24555
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 1 month ago.
7922
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 1 month ago.
275
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 1 month ago.
5408
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 4 months ago.
1623
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 8 months ago.
1848
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 9 months ago.
2291
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 1 year 9 months ago.
15691
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 5 months ago.
4235
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 6 months ago.
5822
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 2 years 9 months ago.
10446
5.0
7 pnagpal
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