Flashcards
STP
Flashcards do conjunto (19)
- 1Blocking StateIn 802.1D, a port state where no frames are sent or received out of except for STP messages.
- 2BPDUGuardA Cisco STP feature that listens for incoming BPDU messages and disables the interface if one is received. Used to prevent loops.
- 3Bridge ID8 byte identifier used by STP and RSTP. 2 byte priority field followed by 6 byte MAC address
- 4Designated PortUsed to determine which interface should forward frames to the segment.
- 5EtherChannelA feature where 8 links can combine into 1 channel-group.
Up to 16 port channels per switch. - 6Forward DelayDefaults to 15 seconds.
Used to determine how long the switch stays in Listening State and then how long in Learning state. - 7Hello BPDULists the Root Bridge ID, Sender's Bridge ID, Sender's Root Cost, and STP Timer Values
- 8802.1DThe IEEE standard for STP
- 9Learning StateAn STP state in which the frames are not forwarded but MAC addresses are learned.
- 10Listening StateA temporary STP state in which frames are are not forwarded and MAC addresses are not learned. Times out existing MAC table entries.
- 11MaxAgeDefault 20 Seconds (10x Hello timer).
Determines how long a switch should weight when it no longer receives hellos before attempting to converge. - 12PortFastSTP feature where the Listening and Learning states are bypassed on an interface. Enabled on end-user device ports.
- 13Root PortOne port on non-root switch where least-cost Hello is received.
Lowest cost back to root. One per switch. - 14Root SwitchThe switch that wins the STP Root Election. Has the lowest BID. Sends periodic BPDU messages (default, 2 seconds)
- 15Root CostSTP cost from a nonroot switch that is the sum of all links back to the root switch out of forwarding interfaces.
- 16Spanning Tree ProtocolAn 802.1D standard that allows switches and bridges to create a redundant LAN by placing redundant links in a blocked state until the switch needs to converge.
- 17System ID ExtensionA 12 bit extension to the Priority that adds the VLAN ID to the Priority.
32768 now comes 32769 with VLAN1 - 18PAgPCisco Proprietary
Port Aggregation Protocol
Uses Desirable and Auto states
An EtherChannel protocol - 19LACPLink Aggregation Control Protocol
802.3ad standard
uses active/passive
Informações
- Descrição
- 2 ICND2 FlashCards sobre STP, criado por rekkos em 03-11-2015.
- Criado por
- rekkos
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