Switching

Hi , the connectivity is simple core switch connected to firewall on access port with firewall interface being L3 and core switch being access in transit VLAN. defaukt route on core switch to route for internet and Firewall has specific routes for co...

Hello Ladies/Gents,I have been trying out MPLS setup on GNS3 Lab.  I cannot ping from CE Device: i.e. CE-R11 to CE-R12, these two routers are connected to opposite end of the lab devices.3 routers namely R3, R6 and R1 are core routers running OSPF an...

I loaded a configuration file into a currently blank 9300L switch that was connected to another 9300L switch.  After doing the load, verifying everything was there...and I did save the configuration to memory, I reloaded the switch. After waiting a w...

Hi,My single SG350X-48P will be replaced by a SG550X-48MP stacked with a SG550XG-8F8T.Is it possible to backup the configuration of the 350 and import it into the 550x-48MP after building up the hybrid-stack?What is the recommended way/steps to trans...

Hi I am having some issues setting up a 2821 to pass internet traffic from a internet router to a layer3 switch.the switch and a pc connected to the switch can ping the outgoing interface on the router but not the other side of the link.The router ca...

what is the default cisco router network type in 1. normal Ethernet port to Ethernet port connection: broad cast or non-broadcast? 2. serial link: i know this one is p2p 3. .... and other types plz

We've got a concerning output when we check the power supplies in our dual 9400 core.  We're using PS3 and PS4 in the two units.  All four power supplies are connected to a good source.  PS4 on Core 1 is connected to a 125V power source, the other 3 ...

Can someone help me understand the concep of vtp pruning.In my topology SW1 is the server and the rest are clients. Vlans configured are 10,20,30,40So as far as I know if vtp pruning is enabled and  a device in vlan 10 ping to another device on vlan ...

I am looking at upgrading our Top of Rack Nexus 5k switches to new 9k models.  These racks are for our VMWare Servers and iSCSI SAN devices (both Dell).  I have always used Nexus switches for this rack (since it is storage) and Catalyst switches for ...

Hi All,  I'm doing some self-guided Wireshark training on Udemy in order to better understand and troubleshoot my network. One of the topics today was retransmission, which I see a lot of in my captures and something I haven't been able to understand...

I want to know about how a Switch forward it's control plane traffic like cdp/vtp/dtp messages on a trunk. Will they be forwarded with tag or untagged and why??

Hi All, i have an vtp server switch i want that my client switch get an vlan from server switch..but client switch unable to get an vlans from server...please find server switch trunk config:description "3850_Switch_VTP"switchport trunk encapsulation...

Hi, I need to confirm please if the SFPs GLC-LH-SM & GLC-SX-MM would be compatible with the new Catalyst 9000 switches, such as the 9200, 9300 & 9400 with its modules? Since the newer models GLC-LH-SMD & GLC-SX-MMD are compatible with these switches ...

I have a Cisco switch c3850. I have recently updated its IOS. Now, I cannot set next variable boot so that the switch automatically boot from packages.conf in the next restart. I did set boot variable using this command "boot system flash:packages.co...