we have two router connected to two diffrent layer2 switches, swtches have 5 vlans, port 1 which is trunk on each switch is connected to each router, there is two more ports that are configured as aggregated trunk working as trunk, I m looking for suggestions about STP design on the switches.
As per the description that you have sent in your query, following in the topology that I have in mind.
There is trunk link between the routers and switches on either side. Two links between the two switches configured as trunks will function in a redundant manner i.e. if one of the trunk link between the two switches goes down the other one will come up. STP will automatically block one of the ports between the two switches.
Router1 is connected to Switch1 and router 2 is connected to switch2 and two of the switched are connected with 2Gbps aggregated links. There is VRRP running b/w router to gateway redundency on the LAN and router alos provide inter vlan communication both router have mirror config, there is five mirror vlan is configured on the switches. I just wanna confirmed If i connect another swith in the future how many instance of STP i need to run if m using PVST.
Thanks for clarifying the topology. In case if you add another switch in the topology the STP will have 5 instances running as you are running PVST mode. The instances do not consider the number of switches but the number of VLAN's for which the STP is converging on the network. Also it it not necessary that STP will be running if there is no loop created by adding the new switch to this topology.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.