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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...

Resolved! Cisco ISO issues

Hi, We have 4 switches 3750, 2960 been running ios ver 12.2(55)SE6 for years !!! without any problem. Suddenly yesterday all 4 xswitches crash same time and restart with the following error: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer...

q-le by Level 2
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  • 9 replies
  • 0 Helpful votes

Hi   Can we test OTV feature on single N7K Switch.I want to create 4 VDC .Two VDC will act as L2 switch and  TWO VDC will configure the OTV feature   Looking for help and suggestion  

I am trying to connect an IOSvL2 switch to a unmanaged switch with two connections, to intentionally create a loop. VIRL will not allow this, as it throws the error;  Duplicate connection from node "iosvl2-5" to network(s) "unmanagedswitch-1": proble...

I cannot for a life of me seem to get the bundle to come up between an ASR9010 and a Nexus 7000.   I'm getting the same error on either l2 or l3 port channels and trunk/access on l2.   Simple config for testing:   Nexus: interface port-channel1 switc...

Aceso by Level 1
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  • 10 replies
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Hi  I'm troubleshooting a problem with a host connected to my Nexus 56128. I would like to do a packet capture of the data going to that host. Is there an easy way to grap a .pcap file of this data from the switch?    thanks  Dan 

dcarr3311 by Level 1
  • 1587 Views
  • 3 replies
  • 0 Helpful votes

Why do I get various ping result from an adjacent router (1-48 ms)? is this normal? these 2 router is directly connected with optical cable on Gigabit port with utilization below 30%   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...

prananta by Level 1
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  • 1 replies
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Hi Dear Friend    İ need some explain about VACL i sharing simple scenario i am clearly understand that i creat vlan and standart access-list after we are creating vlan-access -map and match ip address access list number ok  action forward  i underst...

Hiko by Level 1
  • 1570 Views
  • 8 replies
  • 0 Helpful votes

I'm running Fuji iosxe 16.9.1 on my two 9407R switches that I want to cable together as a StackWise Virtual (SWV) switch.  In reading the 16.9.1 config guides and release notes i've come to the realization that I really don't want to use dual-SUPs in...

I've been looking for a 10GBaseT SFP+ module and I found forum posts that are a few years old, like 2011-2013 era.  Now that it's 2015, are there any 10GBaseT SFP+ modules that could be put in one of two 10G expansions sleds for 3750x or 3560x, or an...

I have the switch configured for ip routing and can do the show ip routes.. Everything looks normal but when I try to ping across vlans it does not work.. Any ideas and also I have read through a lot of other community issues but still no answers..  ...

Hi Everyone,   I am currently experiencing the below issue.   I have about 300 clients connected to an SSID and only 20 of them have managed to receive IP's. These are not geographically linked to each other (for instance, 2 people could be standing ...

oliclarke7 by Level 1
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  • 2 replies
  • 0 Helpful votes