Show ipv6 interface gigabitethernet 00 displays the

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show ipv6 interface gigabitethernet 0/0 – displays the interface status and all the IPv6 addresses for this interface. show ipv6 route – verifies that IPv6 networks and specific IPv6 interface addresses have been installed in the IPv6 routing table. Filter Show Command Output Show command output can be managed using the following command and filters: Use the terminal length number command to specify the number of lines to be displayed. To filter specific output of commands use the (|)pipe character after show command. Parameters that can be used after pipe include: section, include, exclude, begin
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Command History Feature The command history feature temporarily stores a list of executed commands for access: To recall commands press Ctrl+P or the UP Arrow . To return to more recent commands press Ctrl+N or the Down Arrow . By default, command history is enabled and the system captures the last 10 commands in the buffer. Use the show history privileged EXEC command to display the buffer contents. Use the terminal history size user EXEC command to increase or decrease size of the buffer.
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1.2 Routing Decisions 1.2.1 Switching Packets Between Networks Router Switching Function Send a Packet
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Forward to Next Hop
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Packet Routing Reach the Destination
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1.2.2 Path Determination Routing Decisions
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Best Path Best path is selected by a routing protocol based on the value or metric it uses to determine the distance to reach a network : A metric is the value used to measure the distance to a given network. Best path to a network is the path with the lowest metric. Dynamic routing protocols use their own rules and metrics to build and update routing tables : Routing Information Protocol (RIP) – Hop count Open Shortest Path First (OSPF) – Cost based on cumulative bandwidth from source to destination Enhanced Interior Gateway Routing Protocol (EIGRP) – Bandwidth, delay, load, reliability Load Balancing When a router has two or more paths to a destination with equal cost metrics, then the router forwards the packets using both paths equally: Equal cost load balancing can improve network performance. Equal cost load balancing can be configured to use both dynamic routing protocols and static routes.
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Administrative Distance If multiple paths to a destination are configured on a router, the path installed in the routing table is the one with the lowest Administrative Distance (AD): A static route with an AD of 1 is more reliable than an EIGRP- discovered route with an AD of 90. A directly connected route with an AD of 0 is more reliable than a static route with an AD of 1.
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1.3 Router Operation 1.3.1 Analyze the Routing Table The Routing Table A routing table is a file stored in RAM that contains information about: Directly connected routes Remote routes Routing Table Sources The show ip route command is used to display the contents of the routing table: Local route interfaces –
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