CCNA Day 22- Rapid STP
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32 Terms
Rapid STP is IEEE [...]
802.1w
Multiple STP is IEEE [...]
802.1s
What is Cisco's upgrade to 802.1D?
PVST+
What is Cisco's upgrade to 802.1w?
Rapid PVST+
What are the three RSTP port states?
Discarding
Learning
Forwarding
What are the four RSTP port roles?
Root
Designated
Alternate
Backup
Which STP optional features were built in to RSTP to allow ports to move directly to a forwarding state (in certain circumstances)?
[...]
BackboneFast
PortFast
UplinkFast
Which STP optional features were built in to RSTP to allow ports to move directly to a forwarding state (in certain circumstances)?
UplinkFast
[...]
PortFast
BackboneFast
Which STP optional features were built in to RSTP to allow ports to move directly to a forwarding state (in certain circumstances)?
UplinkFast
BackboneFast
[...]
PortFast
The RSTP [...] port role is a discarding port that receives a superior BPDU from another switch.
alternate
The RSTP [...] port role is a discarding port that receives a superior BPDU from the same switch.
backup
The RSTP [...] port role functions as a backup to the root port.
alternate
The RSTP [...] port role functions as a backup to a designated port.
backup
Enable rapid PVST mode on the switch:
SW1(config)# [...]
spanning-tree mode rapid-pvst
In RSTP, which switch(es) originate BPDUs?
All switches
Is RSTP compatible with classic STP?
Yes (the interface connected to the switch running classic STP will run in classic STP mode)
What is the protocol version identifier in a rapid STP BPDU?
2
What is the protocol version identifier in a classic STP BPDU?
0
In RSTP, a switch considers a neighbor lost if it misses [...] BPDUs.
3
What are the three RSTP link types?
Edge
Point-to-point
Shared
Configure a switchport as an RSTP edge port:
SW1(config-if)# [...]
spanning-tree portfast
Configure a switchport as an RSTP point-to-point port:
SW1(config-if)# [...]
spanning-tree link-type point-to-point
Configure a switchport as an RSTP shared port:
SW1(config-if)# [...]
spanning-tree link-type shared
RSTP [...] link type is used for full-duplex connections.
point-to-point
RSTP [...] link type is used for half-duplex connections.
shared
RSTP Port Cost
10 Mbps = [...]
2,000,000
RSTP Port Cost
100 Mbps = [...]
200,000
RSTP Port Cost
1 Gbps = [...]
20,000
RSTP Port Cost
10 Gbps = [...]
2,000
RSTP Port Cost
100 Gbps = [...]
200
RSTP Port Cost
1 Tbps = [...]
20
RSTP Port Cost
10 Tbps = [...]
2