CCNA 2 CH 2

What is the correct syntax of a floating static route?

ip route 209.165.200.228 255.255.255.248 10.0.0.1 120 Floating static routes are used as backup routes, often to routes learned from dynamic routing protocols. To be a floating static route, the configured route must have a higher administrative distance than the primary route. For example, if the primary route is learned through OSPF, then a floating static route that serves as a backup to the OSPF route must have an administrative distance greater than 110. The administrative distance on a floating static route is put at the end of the static route: ip route 209.165.200.228 255.255.255.248 10.0.0.1 120.

What happens to a static route entry in a routing table when the outgoing interface associated with that route goes into the down state?

The static route is removed from the routing table. When the interface associated with a static route goes down, the router will remove the route because it is no longer valid

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Why are the pings from PC0 to Server0 not successful?

The static route to network 192.168.2.0 is misconfigured on Router1.​ Static routes should specify either a local interface or a next-hop IP address

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. What IPv6 static route can be configured on router R1 to make a fully converged network?

ipv6 route 2001:db8:10:12::/64 S0/0/1 To reach the remote network, R1 will need a static route with a destination IPv6 address of 2001:db8:10:12::/64 and an exit interface of S0/0/1. The correct static route configuration will be as follows:ipv6 route 2001:db8:10:12::/64 S0/0/1

Which three IOS troubleshooting commands can help to isolate problems with a static route?

ping show ip route show ip interface brief The ping, show ip route, and show ip interface brief commands provide information to help troubleshoot static routes. Show version does not provide any routing information. The tracert command is used at the Windows command prompt and is not an IOS command. The show arp command displays learned IP address to MAC address mappings contained in the Address Resolution Protocol (ARP) table.

An administrator issues the ipv6 route 2001:db8:acad:1::/32 gigabitethernet0/0 2001:db8:acad:6::1 100 command on a router. What administrative distance is assigned to this route?

100 The command ipv6 route 2001:db8:acad:1::/32 gigabitethernet0/0 2001:db8:acad:6::1 100 will configure a floating static route on a router. The 100 at the end of the command specifies the administrative distance of 100 to be applied to the route.

What is a characteristic of a static route that matches all packets?

It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route. A default static route is a route that matches all packets. It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route. A default static route is simply a static route with 0.0.0.0/0 as the destination IPv4 address. Configuring a default static route creates a gateway of last resort.

Consider the following command: ip route 192.168.10.0 255.255.255.0 10.10.10.2 5 How would an administrator test this configuration?

Manually shut down the router interface used as a primary route. A floating static is a backup route that only appears in the routing table when the interface used with the primary route is down. To test a floating static route, the route must be in the routing table. Therefore, shutting down the interface used as a primary route would allow the floating static route to appear in the routing table.

The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table?

S 172.16.1.0 [1/0] via 172.16.2.2

What are two advantages of static routing over dynamic routing?

Static routing is more secure because it does not advertise over the network Static routing uses fewer router resources than dynamic routing. Static routing requires a thorough understanding of the entire network for proper implementation. It can be prone to errors and does not scale well for large networks. Static routing uses fewer router resources, because no computing is required for updating routes. Static routing can also be more secure because it does not advertise over the network.

What type of route allows a router to forward packets even though its routing table contains no specific route to the destination network?

default route

Which type of static route that is configured on a router uses only the exit interface?

directly connected static route When only the exit interface is used, the route is a directly connected static route. When the next-hop IP address is used, the route is a recursive static route. When both are used, it is a fully specified static route.

What will router R2 do with a packet destined for 192.168.10.129?

send the packet out interface Serial0/0/1 When a static route is configured with the next hop address (as in the case of the 192.168.10.128 network), the output of the show ip route command lists the route as "via" a particular IP address. The router has to look up that IP address to determine which interface to send the packet out. Because the IP address of 10.0.0.6 is part of network 10.0.0.4, the router sends the packet out interface Serial0/0/1.

Consider the following command: ip route 192.168.10.0 255.255.255.0 10.10.10.2 5 Which route would have to go down in order for this static route to appear in the routing table?

a static route to the 192.168.10.0/24 network The administrative distance of 5 added to the end of the static route creates a floating static situation for a static route that goes down. Static routes have a default administrative distance of 1. This route that has an administrative distance of 5 will not be placed into the routing table unless the previously entered static route to the 192.168.10.0/24 goes down or was never entered. The administrative distance of 5 added to the end of the static route configuration creates a floating static route that will be placed in the routing table when the primary route to the same destination network goes down. By default, a static route to the 192.168.10.0/24 network has an administrative distance of 1. Therefore, the floating route with an administrative distance of 5 will not be placed into the routing table unless the previously entered static route to the 192.168.10.0/24 goes down or was never entered. Because the floating route has an administrative distance of 5, the route is preferred to an OSPF-learned route (with the administrative distance of 110) or an EIGRP-learned route (with the administrative distance of 110) to the same destination network.

A network administrator has entered a static route to an Ethernet LAN that is connected to an adjacent router. However, the route is not shown in the routing table. Which command would the administrator use to verify that the exit interface is up?

show ip interface brief The network administrator should use the show ip interface brief command to verify that the exit interface or the interface connected to the next hop address is up and up. The show ip route command has already been issued by the administrator. The show ip protocols command is used when a routing protocol is enabled. The tracert command is used from a Windows PC.

Why would a floating static route be configured with an administrative distance that is higher than the administrative distance of a dynamic routing protocol that is running on the same router?

to be used as a backup route By default, dynamic routing protocols have a higher administrative distance than static routes. Configuring a static route with a higher administrative distance than that of the dynamic routing protocol will result in the dynamic route being used instead of the static route. However, should the dynamically learned route fail, then the static route will be used as a backup.