Switching

In this network there are 4 laptops (picture 1). Mark's laptop pings to Lisa's laptop , I have one doubt ICMP ping request is a layered packet right ? So if it is packet in osi model should have layer3-1 right? But why in picture 2 there are only lay...

Good evening all,I am trying to do a switch configuration for work purposes.  Previously we were using a Cisco Catalyst 3850 switch and the command 'spanning-tree portfast' worked well for interfaces I needed with this configuration.  However, recent...

Dear NetPros,Since GRE is a layer3 technology would it be possible to use it to extend a vlan from one location to the other side of the tunnel which is in a separate geo location? I'm not interested in using L2TPv3 because it doesn't support 6500 ...

Hi,I am seeing an issue where what appears to be a loop forming over our vPC setup. Hopefully the attached topology makes sense but the issue we are seeing is when Po40 is connected from sw4 to both Nexus switches, I get the below mac flap warnings f...

Hello Team, I have a Cisco ISR4221 router. We have an internet link connected to our cisco router. The IP will be received on the cisco interface from ISP only by configuring dhcp option 60 on my router. It is a customer provided link. Customer provi...

I want to configure vrrp between meraki mx and cisco catalyst. I've seen about warm spare on meraki but not sure it will work with catalyst switches.Enlighten me please. Thank you.

I can't open GUI interface of switch C9200L-24P-4G Because of SSl certificate  I tried chrome , fire fox, edge, internet explorer and chromiumand tried to remove cash and cookies and ssl certificates from my windows and bowser same issue the time and...

Hi Is there a known problem with the multi user connection I can set this up on one laptop or one pc no problems I am have problems doing it over a network, in fact three different networks all have problems.I am not new to networking or Cisco enviro...

Hi,I want to know is it possible to check Internet speed directly in the cisco router thru any command or activating any service in the cisco router?There are number of questions and confusions regarding internet speed.As it is seeen most of the time...

Hi, I have encountered a situation in the following where OQD was shown in large amount of 63738644. This port is a leased line Telco port connecting to another site via an ISP and the connection was not stable. It dropped once in two days.   With La...

Hello there,I'm setting up a CB250 Switch, IP already set up, although I received echo reply from ping when my computer is connected to one of the physical ports, when i'm outside I dont get any, but  I do can reach any devices connected to the switc...

Hello AllI have a Cat 9200-48p switch and I have migrated most of the qos setting from a 3750 switch.  I have been reading about qos on the cat 9200 but I would like to know which direction so I place the service policy in.  I want to tag the traffic...