How does router forward packets?
Packet-forwarding routers forward packets but do not run routing protocols. This type of router receives packets from one of its interfaces that is connected to a single network. These packets are then forwarded through another interface on the router to another local network.
How does a Cisco router do packet forwarding?
Process switching – An older packet forwarding mechanism still available for Cisco routers. When a packet arrives on an interface, it is forwarded to the control plane where the CPU matches the destination address with an entry in its routing table, and then determines the exit interface and forwards the packet.
What occurs next in the router lookup process?
What occurs next in the router lookup process after a router identifies a destination IP address and locates a matching level 1 parent route? The level 1 supernet routes are examined. The level 1 ultimate routes are examined. The router drops the packet.
Which route will be used to forward the traffic?
An ultimate route is a route that uses a next-hop IP address or exit interface to forward traffic.
What are two functions of a router choose two )?
A router connects multiple IP networks*
Which is router performs NAT on the packet?
Router 6 performs NAT on the packet and forwards a packet with a source of 172.16.11.70 and a destination of 172.16.11.7. Router 7 sends a response with a source of 172.16.11.7 and a destination of 172.16.11.70. Router 6 performs NAT on the packet, which results in a packet with source address 172.16.11.7 and destination address 10.10.50.4.
How does a router forward packets inside a LAN?
Even a broadcast IP has a broadcast MAC address. ARP has one job, to find the MAC address for an IP address. If the ARP cache does not have an entry for an IP, then it uses a ARP broadcast to find it. Routing tables are used to find the next hop IP.
How is Network Address Translation ( NAT ) used in SIP?
A. The NAT support for voice feature allows SIP embedded messages passing through a router configured with Network Address Translation (NAT) to be translated back to the packet. An application layer gateway (ALG) is used with NAT to translate the voice packets.
Are there inbound access lists for NAT routers?
There are not any inbound access lists that deny the packets from entering the NAT router. The NAT router has the appropriate route in the routing table if the packet is going from inside to outside. Refer to NAT Order of Operation for more information.