spanning-tree

[adel81]

Hello,

I have a hub and spoke network topology, the following switch is connected to the central switch (root bridge) via the port Gi1/0/49 (root port) and all other ports are access port and connected to end devices. I would like to know why the ports Gi1/0/10,42,43,44 are Desg (designated).

VLAN0003
Spanning tree enabled protocol rstp
Root ID Priority 24579
Address xxxx.xxxx.xxxx
Cost 4
Port 49 (GigabitEthernet1/0/49)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32771 (priority 32768 sys-id-ext 3)
Address yyyy.yyyy.yyyy
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/10 Desg FWD 100 128.10 P2p Edge
Gi1/0/42 Desg FWD 100 128.42 P2p Edge
Gi1/0/43 Desg FWD 100 128.43 P2p Edge
Gi1/0/44 Desg FWD 100 128.44 P2p Edge
Gi1/0/49 Root FWD 4

[MHM Cisco World]

The sw are 

Root SW have all port as root port 

Other non-Root SW have one root port and one or more Designated ports and/or block Port 

And since your SW is not root SW then it normal that all port other than Root port is designated port.

[adel81]

I thought that designated ports are only the trunk ports.

[MHM Cisco World · Accepted solution]

No even access port can be designated port.