No, it won't, because RSTP is "asynchronous". STP bridge is a God of Net. No one switch can send something in STP environment except Root Bridge BPDUs. Topology Changes are also need to be sent to root first and only then they are distributed throughout networks. RSTP is quite different as you wrote in p4. But RSTP "is equal" to STP in shared segments.
I meant that in STP it is root bridge who is responsible for all. In fact it is only bridge who generates PDUs there. It is like a synchronous fashion. In RSTP there are many situations when any bridge might do something on it's own. Proposal/Agreement is an example. So it is asynchronous
one very basic question that I have.. May be a silly one as well..
Does the Proposal - Agreement handshake happen after the election of root bridge? if not, how does a switch know where to start the initial proposal - agreement ?
Also, how is the initial convergence is faster in RSTP ( I know that the convergence is faster when failure occurs due to several RSTP enhancement ) but just trying to understand what makes the RSTP faster when it is trying to converge initially.
STP converges uses hello BPDU's and RSTP uses proposal handshake What makes proposal / agreement handshake faster than hello bpdu's?
I believe one item that makes it faster is after the root bridge election, the sw's exchange BPDUs between the directly connected sw's vs sending them up to the root bridge. Dont quote me, I am studying like you! Sounds like a Peter question His STP post rock.
RSTP really is not so universal as STP is. It is good for 100% switched network - without hubs and shared segments of any kind. If you have shared segments, RSTP will backoff to old STP, therefore STP and RSTP are compatible.
For this reason there are no advantages in root selection procedure. Frankly, old switches have more chances to be a root than modern switches due to their small Bridge ID
All differences start here and all of them are based on the fact that every link (except Edge ports) connects 2 switches, not switch and hub. This allows RSTP significantly decrease timers and achieve good convergency.
Proposal/Agreement is, of course, starts when the root is selected. And this mechanism is not faster than hello. It waits and needs hello BPDU to start. But then it works without any hellos automatically downwards from root. So after single hello (2 sec) it might need some milliseconds for network to converge. Switches talk to each other and they do not need hellos, they do not need root BPDUs and they do their job very quickly.
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.