Term
Gateway Load Balancing Protocol
(GLBP) |
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Definition
| is a Cisco proprietary solution to allow automatic selection and simultaneous use of multiple available gateways in addition to automatic failover between those gateways. |
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| The function of the router is to monitor the operational status of the HSRP group and to quickly assume packet-forwarding responsibility if the active router becomes inoperable |
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Definition
Responds to default gateway ARP requests with the virtual router MAC address
Assumes active forwarding of packets for the virtual router
Sends hello messages
Knows the virtual router IP address
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Definition
| indicates that this router is responsible for responding to ARP requests for the virtual IP address |
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Definition
| indicates that the router is receiving hello packets and is ready to be activated if the currently active router fails |
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Definition
a Cisco-proprietary redundancy protocol for establishing a fault-tolerant default gateway
defines a standby group of routers, with one router as the active router. |
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Definition
Displays all the unique device identifier (UDI) values that can be licensed on the system
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Definition
This information is needed to purchase upgrades at a later time, transfer licenses, and lookup licenses.
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Definition
Displays detailed information
about all feature licenses.
Type of license
Evaluation or Permanent
Actual usage time of the license
Time used and left in the evaluation
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Definition
Displays the current list of all features on the router & which are enabled.
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Definition
| contains all of the features capable on the specific device, but may not be activated by default. Additional features may require the purchase of additional licenses to activate. |
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Definition
Can be assigned to several interfaces/devices.
A packet sent to this address goes only to the nearest member of the group, according to the routing protocols measures of distance.
Described as a cross between a Unicast and Multicast.
Packet is only delivered to a single device |
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Definition
Designed for use on a single local link and are automatically configured on all interfaces.
The prefix used is FE80::X/10
Routers do not forward packets with a destination and source address containing __________ |
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Definition
| DHCP client obtains configuration parameters from the server through a quick two message exchange (solicit and reply). |
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| DHCP client uses four message exchanges (solicit, advertise, request and reply). |
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| a host can automatically assign itself a unique 64-bit IPv6 interface identifier without the need for manual configuration or DHCP. |
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Term
| Duplicate Address Detection (DAD) |
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Definition
| used to verify no one else on the network is using the address that you created |
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Term
| Stateless Address Autoconfiguration (SLAAC) |
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Definition
Requires no manual configuration of hosts, minimal (if any) configuration of routers, and no additional servers.
DHCP clients autoconfigure their own IPv6 address based on router advertisements. Routers advertise prefixes that identify the subnet(s) associated with a link, while hosts generate an "interface identifier" that uniquely identifies an interface on a subnet.
DHCP clients uses the DHCP server to obtain the other useful configuration information (such as the address of DNS servers).
This approach is used when a network is not concerned with the exact addresses hosts use on a network so long as they are unique and routable.
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Definition
| a static route that the router uses to back up dynamic route. |
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| link state routing protocols |
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Definition
| a routing protocol that makes its routing decisions based on the state of the links that connect source and destination devices |
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Term
| The ipv6 ospf process-id area area-id command |
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Definition
| command will enable the routing process and its associated configuration to be created but network statements are no longer used. |
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Definition
Show ipv6 ospf neighbor
Show ipv6 ospf database
Show ipv6 route
Show ipv6 protocols |
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Definition
| A router that has every interface in the same area |
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Definition
– A router that has an interface in multiple areas and generates summary LSAs. It connects one or more areas to the main backbone network.
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Term
| Autonomous System Border Router (ASBR) |
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Definition
| – A router that is connected to more than one routing protocol or has at least one interface outside of OSPF. Used to distribute routes received from other, external LSAs throughout its own autonomous system |
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Definition
– A router that is connected to the backbone area.
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Definition
| are referred to as the summary link entries and are created and propagated by ABRs |
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Definition
summary LSA generated by an ABR only when an ASBR exists within an area
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Definition
| describe routes to networks outside the OSPF autonomous system, originated by the ASBR and are flooded to the entire autonomous system |
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