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Module 13 - Coggle Diagram
Module 13
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ICMPv6 Messages
ICMPv6 has new features and improved functionality not found in ICMPv4, including four new protocols as part of the Neighbour Discovery Protocol (ND or NDP)
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Ping
Test connectivity -
uses ICMP echo request and echo reply messages to test connectivity between hosts and provides a summary that includes the success rate and average round-trip time to the destination
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Default gateway -
The ping command can be used to test the ability of a host to communicate on the local network. the default gateway is most often used because the router is normally always operational
Remote Host -
Ping can also be used to test the ability of a local host to communicate across an internetwork. A local host can ping a host on a remote network. A successful ping across the internetwork confirms communication on the local network.
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Time exceeded
When the Time to Live (TTL) field in a packet is decremented to 0, an ICMPv4 Time exceeded message will be sent to the source host.
ICMPv6 also sends a Time Exceeded message. Instead of the IPv4 TTL field, ICMPv6 uses the IPv6 Hop Limit field to determine if the packet has expired.
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