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 have a scenario and want to use VRF lite only to control intervlan routing in campus network. My campus core is 6509 in VSS. My preference is...
9 hours 17 min ago
I have 192.168.1.0 netmask 255.255.255.192. Thus I have subnets. The Lan IP for my router is 192.168.1.33. What is the default gateway for hosts fr...
19 hours 22 min ago
I am trying to setup lacp on my 892fsp router.  I can create the channel-groups on the 2 layer 3 interfaces but I cannot create channel-groups on t...
21 hours 23 min ago
This entry relates in part to the observation that while there is a clear best practice document for VPCs on Nexus 7K ("Design and Configuration Gu...
by 9gmiles
1 day 4 hours ago
Hello!I'm test nat on asr-1002x router. Router terminate about ~15000 pppoe users. About ~2000 vlans.Router has 3x10G links.Shaping, netflow.When r...
1 day 22 hours 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 IPv6 Link-Local Address Issue
Last Reply 4 min 22 sec ago.
47 0 5 5 Peter Paluch
discussion PIM-bidir not forwarding upstream traffic
Last Reply 32 min 16 sec ago.
3 0 0.0 3 joe chen
discussion How does traceroute work
Last Reply 32 min 27 sec ago.
1485 0 5 7 Wassim Aouadi
discussion RSTP Root bridge with backup port Over VPLS backbone
Last Reply 1 hour 43 min ago.
0 0 0.0 1 claudemarcel
discussion Where can I find Cisco documentation in Spanish?
Last Reply 2 hours 16 min ago.
3 0 0.0 1 CHARLES HILL
discussion Temperature shutdown with Cisco 3750
Last Reply 2 hours 27 min ago.
3 0 0.0 3 InayathUlla Sharieff
discussion Stub area flag in OSPF
Last Reply 4 hours 46 min ago.
3 0 5 2 Ranji Prem Andrew P
discussion CISCO 2900 Switch
Last Reply 6 hours 19 min ago.
1 0 5 5 vinay0005
discussion Urgent Supervisor engine (VSS) issue
Last Reply 7 hours 5 min ago.
23 0 0.0 8 MARKUS BENZ
discussion 3750x Stack is repeatedly showing error " %ADJ-3-RESOLVE_REQ : Adj resolve request: Failed to resolve <IP Address> <vlan ID>..
Last Reply 7 hours 52 min ago.
9 24 5 16 Rajeev Ranjan
discussion DR and BDR in OSPF
Last Reply 8 hours 2 min ago.
17 0 5 4 Ranji Prem Andrew P
discussion IP SLA NOT WORKING ON CISCO 1905 ROUTER
Last Reply 8 hours 38 min ago.
24 0 5 4 deepak21bhandari
discussion VRF Lite in campus network
Last Reply 9 hours 17 min ago.
0 0 0.0 0 asim.mz99
discussion vlan can't connect to the internet.
Last Reply 12 hours 6 min ago.
36 0 0.0 6 rkent649649
discussion Switch Port Problem
Last Reply 14 hours 12 min ago.
3 0 0.0 1 Luciane Batista
discussion vlan tagging for wireless AP's
Last Reply 15 hours 16 min ago.
17 1 0.0 5 Joe Link
discussion cisco 892fsp lacp
Last Reply 15 hours 27 min ago.
6 0 0.0 0 mercdecember
discussion rv042 subnets - what is the gateway for subnets
Last Reply 19 hours 22 min ago.
0 0 0.0 0 mp@annamed.pl
discussion Find which queue is dropping traffic cisco WS-C4928-10GE
Last Reply 19 hours 37 min ago.
15 0 5 8 Bedevere Curry
discussion cmd fro switch interface CRC error checking
Last Reply 20 hours 19 min ago.
6 0 0.0 2 InayathUlla Sharieff
discussion 2960 Stack replacement
Last Reply 20 hours 48 min ago.
3 0 0.0 3 InayathUlla Sharieff
discussion Dropped Pings Cisco Stack
Last Reply 21 hours 20 min ago.
20 0 0.0 5 Kushagra Kaushik
discussion Cisco Network Assistant (CNA) 2960X Support
Last Reply 21 hours 33 min ago.
3322 3 10 11 Jeremy Dundore
discussion ASR920 : EVC's and Untagged/Access ports?
Last Reply 1 day 11 min ago.
5 0 0.0 2 Andrew Battersby
discussion Blocking outbound traffic form cisco switch 3560g?
Last Reply 1 day 30 min ago.
10 0 0.0 0 encapsulation1
Filter Results
Subject Views Rating Comments Author
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 2 days 7 hours ago.
114360
4.7
51 ashirkar
Egress QOS
Last Reply 4 days 2 hours ago.
51997
5.0
12 somgupta
Cisco 891 fresh configuration/management without console cable
Last Reply 2 weeks 14 hours ago.
11
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 weeks 18 hours ago.
76
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 weeks 1 day ago.
25
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 3 weeks 3 days ago.
24
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.
25022
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 3 days ago.
4046
0.0
0 TCC_2
3850 Boot Mode
Last Reply 1 month 4 days ago.
1457
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 1 month 6 days ago.
18263
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 1 month 1 week ago.
74
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 1 month 2 weeks ago.
47
0.0
0 josecesp
Spanning Tree Loop Troubleshooting and Safeguards
Last Reply 1 month 2 weeks ago.
46361
5.0
2 James D Hensley
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 1 month 2 weeks ago.
290788
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.
8074
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.
4475
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.
631
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.
11402
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.
393
0.0
0 TCC_2
How to use Time-Domain Reflectometer (TDR)
Last Reply 2 months 3 days ago.
72559
5.0
68 Leo Laohoo
Retrieving Core files from Cisco Nexus switching platforms
Last Reply 2 months 5 days ago.
14132
5.0
1 Yogesh Ramdoss
Using 3850 Embedded Wireshark (Wired)
Last Reply 2 months 1 week ago.
36460
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.
3775
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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