Hi,
1. is the edge port means the port of distribution layer switch which connect to the access layer switch?
No, absolutely not. An edge port is a port connected to a device that is by its design or configuration incapable of performing Layer 2 switching or bridging. Devices such as routers, servers, end hosts, network printers, network attached storage, webcams, etc., these all do not perform Layer 2 switching and therefore ports to these devices can be configured as edge ports. Devices such as switches, hubs, wireless bridges or autonomous access points are performing Layer 2 switching and ports toward these devices are non-edge ports.
To put it very simply, whenever a port on a switch is connected to another switch, that is a non-edge port. If a port on a switch is connected to a non-switching device, such as router, server, or an end host (a PC, a workstation), that is a candidate for an edge port.
2. there are only switch and routers, what servers fail to boot up ? will access layer switch or distribution layer switch or core switch fail to boot up?
I am sorry, I do not understand this question. Please try to ask in different words or perhaps provide an example.
3. where to set individual state? is it the edge port?
Edge ports can be configured in two ways:
- Either directly on the port that should act as an edge port using the spanning-tree portfast command
- Or in the global configuration using the spanning-tree portfast default command that will automatically make all access ports, both current and future, to be considered as edge ports
Best regards,
Peter
