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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Please confirm which design is accurate?  1. Setting up the server room with multiple stackable switches with different subnets and having the gate...
4 hours 25 min ago
I'm pulling my hair out trying to figure out why Packet Tracer is doing this..I keep getting this error %DUAL-5-NBRCHANGE: IP-EIGRP 10: Neighbor 10...
6 hours 12 min ago
Hi,I have cisco catalyst 3560 switch .Switch   Ports  Model              SW Version              SW Image------   -----  -----              -------...
11 hours 18 min ago
Dear all,I configured ssh on my router and since the could not login using putty on my LAN or WAN. i was using telnet before i configured ssh.The e...
14 hours 17 min ago
Good morning I would like to know what tools and parameters can be used to measure network performance? The main idea is to determine if the networ...
15 hours 42 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 Cisco3750 802.1X LLDP Voice and Data Routing
Last Reply 26 min 22 sec ago.
34 0 0 3 Hitesh Vinzoda
discussion 300Mpbs WAN speed. What hardware do I need?
Last Reply 40 min 31 sec ago.
0 0 0 1 Hitesh Vinzoda
discussion QoS - Dropping traffic with BW Available
Last Reply 56 min 25 sec ago.
5 0 0 2 tinochelli
discussion EIGRP %DUAL-5-NBRCHANGE:
Last Reply 1 hour 6 min ago.
3 0 0 0 ubsaccount
discussion C3020 blade switch doesn't accepting dot1q on trunk link?
Last Reply 1 hour 44 min ago.
23 0 5 4 northwindsy
discussion Setup an inbound ACL when NAT is used?
Last Reply 1 hour 58 min ago.
19 0 0 4 Hitesh Vinzoda
discussion Server room network setup
Last Reply 4 hours 25 min ago.
0 0 0 0 alvinreddy
discussion Cisco 3850 Stacking question
Last Reply 6 hours 2 min ago.
13 0 5 2 venkie_pai
discussion routing between 887W and 2851 routers
Last Reply 6 hours 26 min ago.
10 0 0 5 jhager001
discussion 1000BaseSX SFP GIG port errors - DOWN/DOWN. Rx power low alarm; Operating value: -25.7 dBm
Last Reply 8 hours 46 min ago.
20 0 0 3 Leo Laohoo
discussion Link down on one side and up/up on the other
Last Reply 9 hours 34 min ago.
16 0 0 3 bilal.nawaz
discussion ip dhcp snooping client can't get ip dhcp
Last Reply 11 hours 7 min ago.
13 0 0 1 Rolf Fischer
discussion port-channel of 4 interfaces with no output rate...only input rate
Last Reply 11 hours 8 min ago.
11 0 0 2 steve-fuller
discussion ACL configuration issue
Last Reply 11 hours 18 min ago.
6 0 0 0 nareshkannas
discussion How to delay EIGRP adjacency Check
Last Reply 11 hours 35 min ago.
16 0 0 4 steve-fuller
discussion Is 100MB avaliable in N7K-F348XP-25
Last Reply 12 hours 36 min ago.
7 0 5 2 Reza Sharifi
discussion Cisco 6506 Switch
Last Reply 12 hours 40 min ago.
18 0 5 2 Madhukrishnan G...
discussion MAC MOVE Notiication
Last Reply 13 hours 2 min ago.
8 0 0 1 Madhukrishnan G...
discussion vss
Last Reply 13 hours 8 min ago.
32 0 0 3 Madhukrishnan G...
discussion ASA5510 access from one VLAN to another but not the other way around
Last Reply 13 hours 17 min ago.
18 0 0 3 Hitesh Vinzoda
discussion Nexus 3000 switch ---Error : bcm_usd_isr_switch_event_cb:429
Last Reply 13 hours 18 min ago.
3 0 0 0 PdhineshK
discussion Network error:connection Refused
Last Reply 13 hours 25 min ago.
8 0 0 1 Hitesh Vinzoda
discussion Network error:connection Refused
Last Reply 14 hours 17 min ago.
8 0 0 0 paulike12
discussion SWITCH 3850 NETWORK MODULE AND GLC-SX-MM COMPATIBILITY
Last Reply 14 hours 37 min ago.
39 0 0 5 will.cullen
discussion DHCP snooping clients not getting IP address
Last Reply 14 hours 38 min ago.
5856 1 5 16 Bekzod Fakhriddinov
Filter Results
Subject Views Rating Comments Author
Error Message:%ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface <interface> Power Controller reports power Imax error detected
Last Reply 12 hours 34 min ago.
13430
5.0
4 Sivagami Narayanan
Running 40 routers with IOU in 4GB RAM
Last Reply 1 day 9 hours ago.
0
0.0
0 Sudeb Das
"Etherchannel Loadbalancing on Catalyst Switches"
Last Reply 1 week 2 days ago.
20802
5.0
3 Souvik Ghosh
SSH version 2 no IOS cat4000-i5s-mz.122-25.EWA14.bin
Last Reply 1 week 6 days ago.
17
0.0
1 Sergio Alvares
Cisco Nexus 7000 / 7700 Line Cards
Last Reply 1 week 6 days ago.
42
0.0
0 Shaun Hummel
Egress QOS
Last Reply 3 weeks 2 days ago.
52875
5.0
13 somgupta
Virtual switching system (VSS) Configuration For Cisco 4500 series switches
Last Reply 1 month 2 hours ago.
50296
4.7
51 ashirkar
Cisco 891 fresh configuration/management without console cable
Last Reply 1 month 1 week ago.
24
0.0
0 totardo.tobing11
3850x VLAN Switch Port Active but no MAC or IP Address
Last Reply 1 month 1 week ago.
121
0.0
2 TOM FRANCHINA
How to define the VLANs allowed on a trunk link
Last Reply 1 month 1 week ago.
38
0.0
0 KHALEELUR RAHMAN.A
unable to ping pc from (vlan-A) to pc on (vlan-B)
Last Reply 1 month 3 weeks ago.
32
0.0
0 minestraschaos1
The VLAN goes to the administratively down state if two or more VLANs are configured
Last Reply 1 month 3 weeks ago.
25751
3.7
4 TCC_2
Importance of BPDU Guard and BPDU Filter !!
Last Reply 1 month 3 weeks ago.
95662
4.7
12 ganeshh.iyer
The "%SPANTREE-SP-2-RECV_BAD_TLV:" error Cat 6500 Cisco IOS system software
Last Reply 2 months 20 hours ago.
4114
0.0
0 TCC_2
3850 Boot Mode
Last Reply 2 months 2 days ago.
1592
0.0
1 Collin Clark
LICENSING on 2900/3500/3700
Last Reply 2 months 4 days ago.
18693
0.0
3 ranraju
Router Cisco 2921 auto reboot
Last Reply 2 months 1 week ago.
79
0.0
4 npsangvt1
ICANN: Name Collision Occurrence Management Framework. Special IP Address127.0.53.53
Last Reply 2 months 2 weeks ago.
49
0.0
0 josecesp
Spanning Tree Loop Troubleshooting and Safeguards
Last Reply 2 months 2 weeks ago.
47736
5.0
2 James D Hensley
Understanding Ethernet Virtual Circuits (EVC)
Last Reply 2 months 2 weeks ago.
292569
5.0
37
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 2 months 3 weeks ago.
8160
0.0
1 TCC_2
Password Recovery on Cisco Catalyst 3850
Last Reply 2 months 3 weeks ago.
3628
0.0
3 Collin Clark
Configuring a router Eth int or SVI to be a DHCP client
Last Reply 2 months 3 weeks ago.
4533
4.0
0 TCC_2
The card in a fixed hardware configuration Cat chassis functions improperly, not online
Last Reply 2 months 3 weeks ago.
634
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 weeks ago.
11462
0.0
0 TCC_2
Filter Results
Subject Views Rating Comments Author
blog Output drops due to QoS on 2960/3560/3750 switches
Last Reply 3 weeks 4 days ago.
25748
5.0
1 Shashank Singh
blog How do etherchannel HASH algorithm works and LOAD DISTRIBUTION happen?
Last Reply 6 months 17 hours ago.
19842
4.6
12 jakula
blog License Activation on 4500
Last Reply 9 months 2 weeks ago.
331
0.0
1 sheraz butt
blog Nexus 7000 and IOS OSPF Loop Prevention and Interoperability
Last Reply 9 months 2 weeks ago.
7306
5.0
7 Robert Taylor
blog How to build the topology of an OSPF area
Last Reply 1 year 1 week ago.
2444
5.0
5 Aninda Chatterjee
blog Booting Cisco Router from a TFTP server
Last Reply 1 year 1 week ago.
18029
5.0
3 ajaju
blog Loading an IOS on a switch via Xmodem
Last Reply 1 year 1 month ago.
47035
5.0
7 Aninda Chatterjee
blog Configuring a frame-relay switch
Last Reply 1 year 2 months ago.
6466
5.0
7 Aninda Chatterjee
blog Upcoming Ask the Expert Event Featuring Ahmad Manzoor - Senior Pre-Sales Engineer at AGCN
Last Reply 1 year 2 months ago.
394
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 2 months ago.
9
0.0
0 Francine Richards
blog Cisco WCCP with Bluecoat (Multicast mode)
Last Reply 1 year 2 months ago.
119
0.0
0 vishal_2007
blog OSPF over IPsec Tunnel stucks in INIT state
Last Reply 1 year 3 months ago.
377
5.0
0 hsticher
blog Pre-build SPT feature on Nexus - Benefits & Caveats
Last Reply 1 year 3 months ago.
1407
5.0
0 srereddy
blog Link de-bounce timer operation when used on SFP+ ports on Nexus switches
Last Reply 1 year 3 months ago.
756
5.0
2 srereddy
blog Flexlink in Cisco Layer 2 network
Last Reply 1 year 3 months ago.
115
5.0
0 jakula
blog Community Tech-Talk Series: Troubleshooting High CPU due to Multicast
Last Reply 1 year 4 months ago.
8210
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 4 months ago.
289
0.0
0 Julie Burruss
blog Switch: How to test a cable status?
Last Reply 1 year 4 months ago.
7046
5.0
3 Anand G
blog Difference between N7K-M132XP -12 and N7K-M132XP -12L
Last Reply 1 year 7 months ago.
514
0.0
1 Ramu Gajula
blog About "TestErrorCounterMonitor" in 6500/7600
Last Reply 1 year 11 months ago.
2006
4.7
1 Anand G
blog Parity Error.
Last Reply 2 years 3 days ago.
2363
4.5
4 InayathUlla Sharieff
blog Nexus 7000 ACL logging (OAL)
Last Reply 2 years 3 weeks ago.
16580
5.0
7 Robert Taylor
blog Multicast for the heart Part I: IGMP
Last Reply 2 years 8 months ago.
4373
4.8
1 Aninda Chatterjee
blog Router Crashes
Last Reply 2 years 9 months ago.
5906
5.0
1 ajaju
blog Leak Map - Eigrp, Some leaks are useful..
Last Reply 3 years 2 weeks ago.
11072
5.0
7 pnagpal
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