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23 Cards in this Set
- Front
- Back
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name the states STP ports go through and the timers?
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1.Blocking-max age 20 secs.
2.Listening-forward delay 15secs. 3.Learning-forward delay 15secs. 4.Forwarding- |
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STP switch startup. What states does it go through?
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1. link comes up
2.blocking state 3.moves to listening state after it decides its port is a root or designated port. |
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port transition from bloacking to forwarding state time?
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30-50 secs.
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Root port, how it determined?
How many does a switch have? |
Forwarding state. 1 Root port per non-root bridge. This port has the lowest cost to the root bridge.
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1 root bridge per broadcast domain. Ports are in?
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all ports are in "Designated state".
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how is cost determined?
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cost is the bandwidth to get to the root bridge.
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non-designated port
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is in blocking state.
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1 designated port per ____ ?
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segment. All root ports are designated ports.
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BPDUs are sent every _______ ?
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sent every 2 secs.
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Root bridge is determined by _________ ?
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The lowest BID.
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What is a BID?
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BID "bridge ID" is made of the bridge priority and bridge mac-address.
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What is the default bridge priority?
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Default Priority 32768
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What is PortFast?
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Causes ports to transfer immediatly to "forwarding".
Should only be used on "Access Ports" |
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Command to enable portfast on a port?
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#spanning-tree portfast
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how is it determined what non-root bridge with the same cost to the root bridge will be the "designated port" if the two non-root switches are connected together?
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Switch with the lowest BID will get the designated port.
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STP cost
10Gb 1Gb 100Mb 10Mb |
10Gb-2
1Gb-4 100Mb-19 10Mb-100 |
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summary
____ root bridge(s) per network? ____ root port(s) per non-root bridge? ____ designated port(s) per seg? |
1 root bridge per network.
1 root port per non-root bridge. 1 designated port per seg. |
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Assign Vlan 1 an ip of 192.168.1.2?
Also asign the switch a default-gateway? |
#interface vlan 1
#ip address 192.168.1.2 255.255.255.0 #no shutdown #ip default-gateway 192.168.1.1 |
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STP priority recalculation commands.
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#spanning-tree vlan 10 priority 8192
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what is
A8 in binary and decimal? |
1010 1000
168 |
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what is binary and decimal?
BB |
1011 1011
187 |
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in route sumarrization what is the used as the subnet mask, network address?
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Subnet mask is then number of commaon bits and the network address is teh decimal format of all the common bits added up.
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dlci stands for?
and where is it stored in a frame? |
data link connection identifier.
address field. |
