I learned that root guard must be enabled on a switch that is prone to be overtaken by a switch with a lower priority number (so more likely to become the root bridge). However the switch that is prone to be overtaken by a better priority switch, doe...
I am puzzling with a redundant setup with HSRP. (See image in attachment).There are three pc's connected to a switch. One pc in VLAN 10, one pc in VLAN 20 and the last one in VLAN 30.Out of the switch there are two ports (g0/1 and g0/2) connected to ...
I created this setup in Packet Tracer 8.2.1:PC0 -> Switch1(2960)-> Radius serverPC0 is connected to fa0/1 on Switch1.Radius Server is connected to switchport fa0/24PC0 has ip address 192.168.10.10 255.255.255.0 with no default gateway and MD5 dot1x a...
Lab 7.4.8 outlines a setup where we need a ArchLinux VM (security_workstation.ova) connecting to a router in packettracer. The goal is to setup a Radius server on th VM, to which aaa authentications from the packettracer will be authenticated.The th...
A student posted a PacketTracer file in which he configured on switch1 port range fa0/1-8 in portchannel 1 LACP. On the second switch he configured fa0/17-24 in portchannel 1 LACP.If I issue show eth summary on both switches, it shows that the und...
So I understand the primary reason for my wrong assumption is that SW-A will have error-disable ports when it reboots or fails and therefore it is better to root guard a switch that is not primary or secondary root bridge. If SW-C fails or reboots, i...
Great explanation. But I'm also confused now. I learned that a loop-free network using spanning-tree is very important in redundant network design. Will portfast on trunks lead to more network-loops?
Thanks! However I don't understand why I should configure a switchport which links to a router as spanning-tree portfast trunk. Maybe if there is a dhcp pool configured on the router that has timing issues when a switchport is in non portfast mode?
Great!The solution was to add two ip helper-addresses on R3 g0/0/1 pointing to 172.16.1.1 and 172.16.1.2. Furthermore I forgot to apply a route back to 172.31.1.0/24 from R2, as many of you mentioned.Thanks!
