Original Message:
Sent: Jul 11, 2023 10:26 AM
From: pjdouglas
Subject: Spanning tree
Hi Toni
Thank you for your quick reply and comprehensive explanation.
That was extremely helpful and I have been able to make the changes that I needed too.
Appreciate the link to the the pdf which I am currently reading through.
It did cross my mind if I was looking at the wrong guide for the IOS i was running but simply couldn't find what I was looking for.
Much appreciated, thanks once again.....
Original Message:
Sent: Jul 11, 2023 02:45 AM
From: TA18
Subject: Spanning tree
Hello Paul,
If we use Cisco terminology I assume that you want to put a port in a "PortFast BPDU Guard" mode, so that it is a port transitioning to Up state quicker by skipping listening and learning states and getting disabled if a BPDU is received. In Aruba(AOS) terms you would need to configure the port as an Edge port and turn on BPDU Protection.
To do this on 2930M/F you can use:
2930M(config)# spanning-tree 1/5 admin-edge-port
2930M(config)# spanning-tree 1/5 bpdu-protection
Below I'm also linking you the command descriptions from the CLI help:
2930M(config)# spanning-tree 1/5 ?
admin-edge-port Set the administrative edge port status.
auto-edge-port Set the automatic edge port detection.
bpdu-filter Stop a specific port or ports from transmitting BPDUs,
receiving BPDUs, and assume a continuous fowarding
state.
bpdu-protection Disable the specific port or ports if the port(s)
receives STP BPDUs.
The key difference between auto-edge-port and admin-edge-port is that auto-edge-port is the default value and with it the switch listens for BPDUs for 3 seconds and if none are received on the port it's changed to an "edge port". If you use admin-edge-port you are explicitly setting the port to have edge status and this period listening for BPDUs is skipped.
To read more about STP you can check the following Advanced Traffic Management Guide:
https://www.arubanetworks.com/techdocs/AOS-Switch/16.10/Aruba%202930F%26M%20Advanced%20Traffic%20Management%20Guide%20for%20AOS-S%20Switch%2016.10.pdf
(page 137 describes the BPDU protection feature)
(auto and admin edge ports are briefly described on page 109)
I believe you were looking at ArubaOS-CX(AOS-CX) guides (the newer Aruba OS version) and this is why you are not being able to use the bpdu-guard command at interface level. The 2930F/M are traditional/older AOS-S switches and not AOS-CX.
------------------------------
Toni
Original Message:
Sent: Jul 10, 2023 12:04 PM
From: pjdouglas
Subject: Spanning tree
Hi
Fairly new to Aruba Switches having been use to Cisco.
I have configured several 2930M switches which are running spanning tree MST as default.
I m struggling to configure 'spanning-tree bpdu-guard' and portfast on the interfaces as the command is not recognized.
Switch1(eth-1)# spanning-tree bpdu-guard
Invalid input: spanning-tree
Switch1(eth-1)#
Would gratefully appreciate any help.
Paul