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...
2 days 4 hours 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...
2 days 14 hours 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...
2 days 16 hours 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
2 days 23 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...
3 days 17 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 Multiple switches are root bridge for the same VLAN
Last Reply 2 min 44 sec ago.
3 0 0.0 2 Iulian Vaideanu
discussion vlan can't connect to the internet.
Last Reply 8 min 55 sec ago.
48 0 0.0 8 marc.groenen
discussion IP helper issue
Last Reply 35 min 52 sec ago.
47 0 0.0 9 Peter Paluch
discussion Issue in configuring netflow in cisco 3750x switch
Last Reply 50 min 58 sec ago.
13 0 0.0 1 mark malone
discussion Good gigabit switch
Last Reply 1 hour 4 min ago.
3 0 0.0 1 mark malone
discussion L2 Etherchannel issue between Nexus 5K Dual-Connected and Cisco 6500 VSS
Last Reply 1 hour 35 min ago.
13 0 0.0 3 Peter Paluch
discussion Monitoring the bandwidth of a interface VLAN (SVI)
Last Reply 3 hours 43 min ago.
18 0 0.0 2 sabinemattar
discussion connecting 1gig switches with 10gig uplinks
Last Reply 3 hours 48 min ago.
6 0 0.0 1 sk.lachica
discussion PIM-bidir not forwarding upstream traffic
Last Reply 6 hours 27 min ago.
36 0 0.0 11 joe chen
discussion EIGRP Discontiguous network
Last Reply 6 hours 46 min ago.
1 0 0.0 1 InayathUlla Sharieff
discussion vrf lite not working with vlan interfaces
Last Reply 14 hours 1 min ago.
13 0 0.0 1 Peter Paluch
discussion Web Server IP Address Change
Last Reply 15 hours 17 min ago.
1 0 0.0 1 Peter Paluch
discussion Soft reset and Route refresh in BGP
Last Reply 18 hours 32 min ago.
9 0 0.0 1 Peter Paluch
discussion N5K upgrade -
Last Reply 19 hours 41 min ago.
23 0 0.0 2 fawad-alam
discussion Difference between routing protocols and routed protocols
Last Reply 22 hours 3 min ago.
4 0 5 1 Leo Laohoo
discussion How to troubleshoot a LAN network?
Last Reply 1 day 9 min ago.
30 0 5 7 morteza badizamani
discussion monitor session traffic on f0/0 port
Last Reply 1 day 1 hour ago.
6 0 0.0 1 Peter Paluch
discussion RSTP Root bridge with backup port Over VPLS backbone
Last Reply 1 day 2 hours ago.
35 0 5 8 Peter Paluch
discussion "arp timeout" configuration under 2960 switch/l2 interface
Last Reply 1 day 11 hours ago.
16 0 0.0 4 Difan Zhao
discussion IPv6 Link-Local Address Issue
Last Reply 1 day 19 hours ago.
56 0 5 5 Peter Paluch
discussion How does traceroute work
Last Reply 1 day 19 hours ago.
1493 0 5 7 Wassim Aouadi
discussion Where can I find Cisco documentation in Spanish?
Last Reply 1 day 21 hours ago.
7 0 0.0 1 CHARLES HILL
discussion Temperature shutdown with Cisco 3750
Last Reply 1 day 21 hours ago.
10 0 0.0 3 InayathUlla Sharieff
discussion Stub area flag in OSPF
Last Reply 1 day 23 hours ago.
13 0 5 2 Ranji Prem Andrew P
discussion CISCO 2900 Switch
Last Reply 2 days 1 hour ago.
20 0 5 5 vinay0005
Filter Results
Subject Views Rating Comments Author
Egress QOS
Last Reply 26 sec ago.
52068
5.0
13 somgupta
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 6 days 4 hours ago.
50296
4.7
51 ashirkar
Cisco 891 fresh configuration/management without console cable
Last Reply 2 weeks 4 days ago.
11
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 2 weeks 4 days ago.
78
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 2 weeks 4 days ago.
28
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 4 weeks 1 hour ago.
24
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 1 month 3 days ago.
25069
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 month 3 days ago.
92490
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 1 month 6 days ago.
4050
0.0
0 TCC_2
3850 Boot Mode
Last Reply 1 month 1 week ago.
1469
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 1 month 1 week ago.
18303
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 1 month 2 weeks ago.
74
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 1 month 3 weeks ago.
47
0.0
0 josecesp
Spanning Tree Loop Troubleshooting and Safeguards
Last Reply 1 month 3 weeks ago.
46493
5.0
2 James D Hensley
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 1 month 3 weeks ago.
290972
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 4 weeks ago.
8078
0.0
1 TCC_2
Password Recovery on Cisco Catalyst 3850
Last Reply 2 months 2 days ago.
3121
0.0
3 Collin Clark
Configuring a router Eth int or SVI to be a DHCP client
Last Reply 2 months 3 days ago.
4481
4.0
0 TCC_2
The card in a fixed hardware configuration Cat chassis functions improperly, not online
Last Reply 2 months 3 days 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 2 months 3 days ago.
11407
0.0
0 TCC_2
%SYS-3-SYS_LCPERR3:Module X: Fatal exception occurred Cat 6k, WS-X6348-RJ45 module reset
Last Reply 2 months 3 days ago.
393
0.0
0 TCC_2
How to use Time-Domain Reflectometer (TDR)
Last Reply 2 months 1 week ago.
72757
5.0
68 Leo Laohoo
Retrieving Core files from Cisco Nexus switching platforms
Last Reply 2 months 1 week ago.
14178
5.0
1 Yogesh Ramdoss
Using 3850 Embedded Wireshark (Wired)
Last Reply 2 months 2 weeks ago.
36493
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 2 weeks ago.
3777
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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