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Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...

Hi all,if we have switch --  connected to cisco IP phone -- connected to pc.Here is configint fa0/1mls qos trust cosswitchport voice vlan dot1pas per cisco website it says ---Instruct the switch port to use 802.1P priority tagging for voice traffic a...

mahesh18 by Level 6
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Hello everyone,I just picked up a used 6509 that I want to use for a lab environment.  I want to be able to do some strightforward switching with VLANs on this switch with possibly IDS and wireless modules in the near future.  I have been told to sta...

Hi,I have a problem with the vss in the cisco 6500, the problem was that the one of the two 6500 stayed in mode recovery and we reboot the switch, but still the same. So how can I fix the problem?the configuration of the vss is the following:interfac...

I would like to have switch redundency for LAN and WAN segments and I am planning to implement this as shown in the attached diagram. Any recommendation is appreciated. Also what is the best way to manage the switch in public segment as assigning pub...

avilt by Level 3
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  • 1 replies
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Hello,I've got a slight problem with my setup. I have two Cisco catalyst 3500 switches which both have a Finisar FTR-1519-62 1620nm Single Mode GBIC Transceiver. IOS ver. 12. Once the switches are up and running the GBIC's will be detected only if in...

Hi all,I have a Cisco WS-C2960G-48TC-L running 12.2(53)SE1.  I'm trying to upgrade to 12.2(55)SE1 via the web-based admin panel.  I've downloaded the tar file, but after browsing for it and clicking "Upgrade", the switch simply sits there in "loading...

HelloOur Cisco 4500 box shows high CPU Utilization ; no changes done on software or any hardware added.The Box got Three modules.1. Supervisor Engine2. Ethernet Module 24 ports 10/100/10003. Fiber module 6 ports   ( 5 ports used - connected to Access...

Our company was sold 15 Catalyst 2960's along with 15 cisco MGBLX1 GBic modules.When I plug them into the switch, I get the following error:GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/1 has bad crcI tried using the unsupported transceiv...

akscooter by Level 1
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  • 3 replies
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I know Cisco has a PDF doc out there that compares router performances. Has anyone found a newer version that includes the ISR G2 routers? i.e. 1900, 2900, 3900s. I found one that addresses some of the questions I had, but not the same numbers as the...

rtjensen4 by Level 4
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Setting up a 2511 access router for some of my console connections. Should be a fairly simple install...but...My ethernet 0 interface which is connected via a aui transceiver keeps going up down.I have tried connecting it to a switch and also directl...

dclee by Level 1
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Good morning, I am trying to use netflow version 9 on a Cisco 1841.  It works on my 2811's and 3745 but not my 1841.Is this supported on the 1841?, it accepts my "ip flow-export version 9" and "ip flow-export x.x.x.x 9999" commands so I assume it doe...

bsciarra1 by Level 1
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