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 all Can anyone tell me when you should really look at nexus switches, we have cat 6500's with sup2Ts etc, we don't really touch the sides of the...
21 sec ago
Hi,'show inventory' can display Cisco part number (PID) in IOS.'show interface transceiver' command in NX-OS only shows the technical specification...
3 hours 29 min ago
Attached is drawing and config of items for our current and proposed routing config for our 4500 switch.Can someone please review and make recommen...
11 hours 4 min ago
Hello all, We're using Cisco Catalyst 4500-X switches, some in a VSS pair and some are "stand alone". We've noticed that we can't find the command...
11 hours 53 min ago
Hi all! I am looking for a way to set a value of CoS to a inner VLAN when I use staked VLANs.I try to use policy-map but only can mark CoS in outer...
11 hours 58 min 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 when to move to Nexus
Last Reply 21 sec ago.
0 0 0.0 0 carl_townshend
discussion 6500
Last Reply 4 min 30 sec ago.
0 0 0.0 1 Reza Sharifi
discussion Cannot ping 3850 from 4500X core
Last Reply 1 hour 51 min ago.
18 0 0.0 5 roger perkin
discussion Inter-VLAN Routing
Last Reply 2 hours 48 min ago.
135 0 0.0 16 Jon Marshall
discussion Reason for the switch uplink and the network design - really wanted to know ;)
Last Reply 2 hours 54 min ago.
24 0 5 5 Jon Marshall
discussion sh command on router to list errors not working?
Last Reply 3 hours 25 min ago.
0 0 0.0 3 glen.grant
discussion How to display Transceiver Cisco PID in Nexus platform?
Last Reply 3 hours 29 min ago.
0 0 0.0 0 Frank Li
discussion 3750X IOS
Last Reply 3 hours 48 min ago.
23 0 0.0 6 Joseph W. Doherty
discussion Cisco 2600 router and switch(3500xl) connection problem
Last Reply 4 hours 24 min ago.
0 0 0.0 1 cehill
discussion uplink ports and actual sfp port in switches ( please help )
Last Reply 4 hours 29 min ago.
38 0 5 5 szejiekoh
discussion Nexus 6000 Storm Control
Last Reply 4 hours 37 min ago.
24 0 0.0 3 r.hollmer
discussion Ftp error on 7200
Last Reply 5 hours 23 min ago.
1219 2 0.0 3 shematalic
discussion Cat4506 Sup IV Version 12.2 need to change for
Last Reply 5 hours 31 min ago.
16 0 0.0 6 vigia
discussion Does the dot1q native VLAN need to be defined on the switch?
Last Reply 5 hours 38 min ago.
0 0 0.0 2 Bilal Nawaz
discussion EtherChannel between stacked VSS Catalyst 4500X and Stacked 2960X.
Last Reply 5 hours 43 min ago.
0 0 0.0 1 Bilal Nawaz
discussion Cisco 2960-XR switch, Inter-Vlan routing
Last Reply 5 hours 50 min ago.
0 0 0.0 4 cehill
discussion home router IP address
Last Reply 5 hours 57 min ago.
0 0 0.0 1 alessandro.s
discussion Questions VLAN design best practices
Last Reply 6 hours 10 min ago.
24 0 0.0 6 dariopalermo
discussion Increasing Total output drops in the Cisco switch
Last Reply 6 hours 24 min ago.
448 0 0.0 6 Joseph W. Doherty
discussion Feature differences in IOS Version
Last Reply 6 hours 31 min ago.
0 0 5 1 Joseph W. Doherty
discussion Questions about Multicast when L2 and L3 are mixed.
Last Reply 6 hours 52 min ago.
64 0 0.0 12 Joseph W. Doherty
discussion Private vlan and Layer3 vlans for management of switches..
Last Reply 7 hours 41 min ago.
21 0 0.0 3 Jon Marshall
discussion C4506E and C6509E can VSS together
Last Reply 8 hours 19 sec ago.
18 0 5 4 Tang-Suan Tan
discussion Advertise a specific subnet to a BGP neighbour out of an aggregate
Last Reply 9 hours 12 min ago.
41 0 0.0 12 Jon Marshall
discussion VLAN_Access-List
Last Reply 10 hours 20 min ago.
13 0 0.0 1 Bilal Nawaz
Filter Results
Subject Views Rating Comments Author
Catalyst 6800 VSS Quad-Sup SSO and Instant Access Overview - FAQ from live webcast
Last Reply 3 min 56 sec ago.
4472
5.0
2 ashirkar
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 6 days 8 hours ago.
7001
0.0
1 TCC_2
SNMP Engine over 80% CPU 100%!!! ?
Last Reply 1 week 6 hours ago.
4195
0.0
3 vita_user
CAM (Content Addressable Memory) VS TCAM (Ternary Content Addressable Memory)
Last Reply 1 week 1 day ago.
55274
4.5
6 Thamaraiselvam Santhanam
3850: Understanding interface configuration on NM modules
Last Reply 1 week 1 day ago.
15374
5.0
8 Richard Primm
Password Recovery on Cisco Catalyst 3850
Last Reply 1 week 2 days ago.
1789
0.0
2 Collin Clark
Cisco 2911 Stuck in ROMMON After CF Format
Last Reply 1 week 5 days ago.
65
0.0
2 Ty Gadberry
Route to Host Stuck on Switch
Last Reply 2 weeks 1 day ago.
2702
5.0
4 martinez-adrian
Single-sided vs double-sided vpc
Last Reply 3 weeks 1 day ago.
8698
3.7
15 pnagpal
EEM Script for collecting data during Intermittent High CPU issue
Last Reply 2 years 6 months ago.
6835
0.0
3 pnagpal
Troubleshooting Nexus 7000 - Useful commands
Last Reply 3 years 3 months ago.
3680
0.0
3 pnagpal
Cheat-sheet for Catalyst 6500 with Sup 720
Last Reply 3 years 5 months ago.
7008
0.0
2 pnagpal
Deep dive into EIGRP Summarization
Last Reply 3 years 8 months ago.
18
0.0
0 pnagpal
Routing Protocol Selection Guide - IGRP, EIGRP, OSPF, IS-IS, BGP
Last Reply 1 year 1 month ago.
96777
4.0
1 Shaun Hummel
Understanding MSFC, PFC and DFC roles in Catalyst 6500 Series Switch
Last Reply 4 weeks 1 day ago.
40987
5.0
12 SunilKhanna
Redundant-power-supply support on the Cisco Catalyst Express 500 Series switches
Last Reply 5 years 9 months ago.
396
0.0
0 TCC_2
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 month 2 weeks ago.
99740
4.7
47 ashirkar
example of Embedded Event Manager (EEM) on my 881W - to shut down a interface at 1am
Last Reply 1 month 2 weeks ago.
203
4.0
2 dshornstein
OSPF and IS-IS Differences
Last Reply 1 month 2 weeks ago.
3974
5.0
1 inderdeeps
Switch Fabric- Troubleshooting tips
Last Reply 3 years 4 months ago.
18545
5.0
2 pnagpal
The "%SW_DAI-4-DHCP_SNOOPING_DENY:" error message is received when configuring the dynamic ARP inspection in switches that run Cisco IOS Software
Last Reply 1 month 4 weeks ago.
22295
5.0
4 TCC_2
Troubleshooting tips for 3750X Stack power feature
Last Reply 2 months 1 day ago.
13496
4.0
5 pnagpal
ITD: Load Balancing, Traffic Steering & Clustering using Cisco switches
Last Reply 2 months 3 days ago.
58
5.0
0 expertadvisor20151
Configuring Microsoft NLB on Nexus 7000
Last Reply 2 months 3 days ago.
5168
5.0
2 mrabbi
Filter Results
Subject Views Rating Comments Author
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 2 months 1 day ago.
21786
4.6
12 jakula
blog License Activation on 4500
Last Reply 5 months 1 week ago.
176
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 5 months 1 week ago.
7035
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 8 months 1 week ago.
2105
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 8 months 2 weeks ago.
14475
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 9 months 1 day ago.
38208
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 10 months 1 week ago.
5873
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 10 months 2 weeks ago.
370
5.0
0 Francine Richards
blog Upcoming Ask the Expert Event with Cisco Designated VIP Marwan Al-shawi May 12-23
Last Reply 10 months 3 weeks ago.
123
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 11 months 1 hour ago.
98
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 11 months 1 week ago.
312
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 2 years 10 months ago.
1016
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 2 years 9 months ago.
711
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 2 years 1 month ago.
82
5.0
0 jakula
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 years 11 months ago.
20820
5.0
0 Shashank Singh
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 10 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 days ago.
271
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 6 days ago.
5007
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 3 months ago.
1504
0.0
1 ramugaju
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 7 months ago.
1794
4.7
1 Anand G
blog Parity Error.
Last Reply 1 year 8 months ago.
2273
4.5
4 InayathUlla Sharieff
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