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Hi,Our server switch (10.0.0.249) it is connected with cores switch with portchannel and now its was start broadcasting with three specific mac address.Gi1/0/31 Gi1/0/7       (X.X.X.5441)Gi 1/0/27 Gi1/0/19    (X.X.X.56C9)Gi1/0/31 Gi1/0/32     (X.X.X....

BLUF:  Does port security using sticky MAC addresses (on a 3750 platform) also affect the switch's MAC address table, or is port security entirely separate from the MAC address table?Background:I ran into an issue with two firewalls in an active-pass...

Im new to the cisco world, working though courses to get my ccna certificate. Bought a cisco 2950 series switch 12.Im trying to set it up for ssh but having issues with the crypto key command. Ive googled looking for answers and found that i had to d...

I am noticing high memory used on my 2960-S I am running 15.0(2)SE.  I am concerned that there is a problem with this model and IOS.  What can I do to solve this?also found discussion about 12.2 having similar issueshttps://supportforums.cisco.com/th...

Sam Jones by Level 1
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Hello this is my first post so excuse me and my knowledge on MST regions is going round and round in circles.I Currently have 13 switches in partial mesh. I am on the boundary of these devices being in the standard STP "diameter". Due to the variabil...

Hi All, I have two routers trying to connect them back to back but interface status on both router is in "down" state. am I missing something? thanks for any help. also I am using T1 crossover  cable pinout  (1,2 > 4,5 )AlexROUTER-A interface Serial0...

   Hi all,Any one can help , as i have 6509 E.  Actually what happen it last 3-4 times it reload its self and got stuck in rommon mode, i tried to boot it with boot by connecting a console cable on supervisor 720 2b.Anyone can help me exact what amd ...

Hi,In a given below situation can someone say me how exactly ping goes from each layer to reach HostB from HostA.From hostA to HostB ping is working fine but how the packets are moved at each level.HostA<PC>-------------Switch<L2>--------------Router...

Hi All,I have the attached design with core,distribution and access layers and HSRP is implemented as FHRP at distribution switches for different SVIs.If know how to track the single link from Dist A  to CORE A inwhich if this link goes down then DIS...