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Everytime I try to download Cisco secure client 5 to reach the Cisco Modelling Labs, I receive the announcement that there is no valid subscription and after that I can't download anything from the Cisco software site.I would like to present the Cisc...
Last week I offered my students a test in PacketTracer.Part of the assessment was a topology with three 2960 L2 switches, where S2 was configured as VTP server, distributing vlan 10,20,30 and 40. S1 and S3 configured as VTP client.Links between the s...
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...
When I am using multiple VLAN's in spanning-tree, the link light will only become orange in PT when VLAN 1 is included. I have spanning tree only enabled on trunks. I disable spanning-tree with bpduguard and portfast on access ports. All ports on the...
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?
