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23 Cards in this Set
- Front
- Back
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Name 3 key advantages of 802.1Q Trunking over ISL Trunking.
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1) Smaller Frame Overhead
2) Widely Supported 3) Support for 802.1p fields for Qos |
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What makes up the 802.1Q Tag portion of frame?
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EtherType
PRI 802.1p field 3 bit CFI VLAN ID (12 bytes) |
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How large is a 802.1Q tagged frame?
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1522 bytes
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In the VTP protocol. How often are "summary" advertisements sent.
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Every 5 minutes
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Describe the vtp process
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VTP servers advertise summary advertisements via multicast address. Clients listen for advertisements that match their VTP domain and password
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What of VLANS are used to build Private Vlans.
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Primary and Secondary VLANS
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What are two types of Secondary VLANs?
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Community
Isolated |
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True or False - Promiscuous port can serve and isolated and community vlan at the same time.
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False - A promiscuous port can service only one primary VLAN. A promiscuous port can service one isolated
VLAN or many community VLANs. |
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How do you configure a vlan to be a type of private vlan.
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Switch(config-vlan)# private-vlan {community | isolated | primary}
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How do you associate secondary vlans to primary vlans?
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Switch(config-vlan)# private-vlan association {secondary-vlan-list |
add secondary-vlan-list | remove secondary-vlan-list} |
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Summarize Private Vlan configuratioj
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- vtp mode transparent!
- Create Secondary VLANS - Create Primary VLANS - Associate Secondary VLANS to primary VLANS - Map Secondary VLANS to Layer Interface of Primary - Configure Physical Port as host or Promiscious (2 step process!!) |
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What must be enabled in order for Private VLANS to work?
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vtp mode transparent
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On lower end switches implementing switchport protection which port types cannot send traffic to each other ?
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type protected
protected -> unprotected works! unprotected -> unprotected works! default port type = unprotected |
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What IEEE spec is LACP defined in?
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802.3ad
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What is the max amount of ports that can be bundled into an etherchannel
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8
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What are the different options for PAgP
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Auto Places an interface in a passive negotiating state in which the interface
responds to the PAgP packets that it receives but does not initiate PAgP negotiation (default). Desirable Places an interface in an active negotiating state in which the interface initiates negotiations with other interfaces by sending PAgP packets. On Forces the interface to channel without PAgP. Interfaces configured in the “on” mode do not exchange PAgP packets. Non-silent If a switch is connected to a partner that is PAgP-capable, configure the switch interface for non-silent operation. The non-silent keyword is always used with the auto or desirable mode. If you do not specify non-silent with the auto or desirable mode, silent is assumed. The silent setting is for connections to file servers or packet analyzers; this setting enables PAgP to operate, to attach the interface to a channel group, and to use the interface for transmission. |
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What mode options for PAgP will not form an EtherChannel
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Auto / Auto on both sides
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What modes of LACP will not form an Ether Channel
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Passive / Passive
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Will Active / Passive configuration on ports for LACP allow for an etherchannel to come live?
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No
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how do you verify an ether channel config
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show etherchannel
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What is the default port priority of a configured LACP port
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32768
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What is the default loadbalance method on lower end switches for etherchannel
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src-mac
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What is the default loadbalance method on higher end switches for etherchannel
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src-dst-ip
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