What is the ICMPv6 echo message type?

Type: Identifies the ICMPv6 message type; for Echo Request messages the value is 128, and for Echo Reply messages 129. (Recall that in ICMPv6, informational messages always have a Type value of 128 or higher.) If this is sent in the Echo Request it is copied into the Echo Reply to be sent back to the source.

What is ICMPv6 protocol used for?

Internet Control Message Protocol (ICMP) is used for reporting errors and performing network diagnostics. In the error reporting process, ICMP sends messages from the receiver to the sender when data does not come though as it should.

What is the difference between ICMPv4 and ICMPv6?

ICMPv4 is the messaging protocol for IPv4. ICMPv6 provides these same services for IPv6 but includes additional functionality. In this course, the term ICMP will be used when referring to both ICMPv4 and ICMPv6.

Should I allow ICMPv6?

The Problem. Many network administrators feel that ICMP is a security risk, and should therefore always be blocked at the firewall. It is true that ICMP does have some security issues associated with it, and that a lot of ICMP should be blocked. But this is no reason to block all ICMP traffic!

What are the different types of ICMPv6 messages?

Informational Messages ICMPv6 Information message Type Field value Code Field value Description Echo Request Message 128 0 Used to check and troubleshoot connectiv Echo Reply Message 129 0 This message is generated in response to

What is the ICMP redirect message Type 137?

The Redirect message is ICMPv6 Type 137 and the last message type. A redirect message is sent by routers to tell hosts that there is a better next hop for a target that was directed to the specific router.

Which is Internet Control Message protocol for IPv6?

v. t. e. Internet Control Message Protocol version 6 ( ICMPv6) is the implementation of the Internet Control Message Protocol (ICMP) for Internet Protocol version 6 (IPv6). ICMPv6 is defined in RFC 4443. ICMPv6 is an integral part of IPv6 and performs error reporting and diagnostic functions (e.g., ping ) ICMPv6 has a framework for extensions

What is the ICMPv6 RA for a router?

The Router Advertisement message (RA) is ICMPv6 Type 134. A router sends a periodic Router Advertisement or RA to the “all hosts” multicast group (ff02::1), to announce the prefix (network) information and its own address
 to be used by clients on the locally connected link or network.