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We just received a new Nexus 5548 for our lab, and eventually for our 10GB ethernet environment.  It will only be used as a layer2 switch.  I have lots of experience with the older Cisco switches (3750s, 6500s, etc), but this will be my first Nexus.W...

Hi Guys,We have a VSS environment with two Cisco 6509-Es.IOS image:s72033-ipservicesk9_wan-mz.122-33.SXI5when I switch on or reload the  Core switches(VSS), I find a Minor Error in the "Show module switch all" command.I also did a "show diagnostic re...

Hi All,I set up many MAC access-list entires on my Catalyst 3560 (Version 12.2(25)SEB4) to prevent unauthorized computers/devices from accessing network.mac access-list extended PermittedHostpermit host 0025.6498.65d9 anypermit host f04d.a22d.53ca an...

jun.gao by Level 1
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Hi guys,In my Cisco 3750 get rebooted and now the SFP module is not working.It showing the following error message.05:13:22: %PHY-4-CHECK_SUM_FAILED: SFP EEPROM data check sum failed for SFP interface Gi1/0/26  05:13:22: %GBIC_SECURITY_CRYPT-4-ID_MIS...

I am trying to set up HSRP on 3 routers (see attached drawing).  At one point I had it running on one side, but then ran in to a static route problem on the other side.  I have added a switch to hand the static route/IP addressing on interfaces part,...

AOA  Hey i am from pakistan , working first time on switch 4507 , this is my 2nd week and i plug the console on this 4507 switch , the switch reboots automatically it comes to stage mention below and reboots. My question is i have not seen any error ...

Hi all,How should the "spanning-tree portfast" command be configured on an Port-Channel interface ?Should it be configured 1) On the Port-Channel interface itself (only)2) On every interface which is member of that etherchannel but not on the Port-Ch...

Hi Can I create vPC between N5K and C65K ? if yes how and what is the advantage ??my scenario is like this 65K               65K|                    |N5K               N5K|     |               |     |N2K N2K     N2K     N2K