Switching

I have configured port security ... as Sticky Mac address... for My Machine 2 month before ...... But Today my machine port goes downand i found this on Switch logg..Jan 18 12:27:04.679 kolkata: %PORT_SECURITY-2-PSECURE_VIOLATION: Security violation ...

Hello,I have a L2 switch and L3 swithch trunked.  There are multiple VLANs on these switches but I want the L3 switch to be able to give DHCP offers to all these VLANs in the L2 switch and L3.  I have created the 5 DHCP scopes on the L3 switch, but t...

I have a couple of users who randomly can't get access to any resources.  The port they connect to doesn't have port security, the have an IP phone and PC.  IP phone is fine since it's always on the same port.  There PC get's an IP from DHCP (DHCP is...

Hello allI have Core of 2 x 7K and an aggregation layer of 2 x 5K.All are fully meshed with peer link between each 7K and peer link between each 5K.I have the 5k's having one vpc to both 7K's and vice versa. Everything is LACP.The issue I am having i...

                   HI,I am running cat4500-entservices-mz.122-53.SG5.bin image on cisco 4948 switch and need to upgrade the IOS to support ssh.Is there any licence required for this

Trying to get a simple copy/paste template to configure my switches and upgrade them.  However the copy tftp commands stop working when the switch asks to save and confirm the reload.  Any ideas what I can do to send the 'yes' and confirm?   Ignnore ...

Am attempting to load a new license on a 24 Port 3750X. Was LANBase code, need to get it to IPBase. Have the license file. Have put it on the flash drive. Running "license install flash:" i get the message "%Error reading flash: (is a directory)%Erro...

Dear All,I have a 2 cisco core (cisco WS-C6509-E (R7000) processor) and been working for quite sometime.they are conneted with HSRP with active standby config with a 10 g module for redundancyjust today I see that the cpu utilization went to about 50...

Hello I need someone to figure out this quiz. I dont see much logic in the answer. I think some information is missing as to the routers that participated initially in the electionThanks

Hello,I have just erased the config off an 1841 router and put my new config on and now I'm getting loads of these messages, what are they:Router#%Error opening tftp://255.255.255.255/cisconet.cfg (Timed out)%Error opening tftp://255.255.255.255/rout...

Hi All,I was just curious if anyone knows if you can create an extended ACL that outlines port #s? I.e, permit udp host x.x.x.x host x.x.x.x eq port port ?Thank you in advance,Ashley

hi ,when i type sh run ,crypto pki trustpoint TP-self-signed-1195085824 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-1195085824 revocation-check none rsakeypair TP-self-signed-1195085824!!crypto pki certificate chain TP-self-sign...

I see that my "lost carrier" counter is not at 0.  I've looked up the potential issues as to why this counter would go up (i.e. bad cable).  I'm curious to know what exactly this means on a technical detail level.  Also, what are the symtomps when th...

Hi,Could you please let me know how many VLANs can be added on trunk port on cisco switches (Maximum VLANs that can be allowed on trunk ports of a cisco switches)??.Thanks & Regards,Ahmed Umair