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Ripv2 authentication message format, Protocols and standards – H3C Technologies H3C SecPath F1000-E User Manual

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Version: Version of RIP. For RIPv2 the value is 0x02.

Route Tag: Route Tag.

IP Address: Destination IP address. It can be a natural network address, subnet address or host
address.

Subnet Mask: Mask of the destination address.

Next Hop: If set to 0.0.0.0, it indicates that the originator of the route is the best next hop; otherwise
it indicates a next hop better than the originator of the route.

RIPv2 authentication message format

RIPv2 sets the AFI field of the first route entry to 0xFFFF to identify authentication information. See

Figure

3

.

Figure 3 RIPv2 Authentication Message

Authentication Type: A value of 2 represents plain text authentication, while a value of 3 represents
MD5.

Authentication: Authentication data, including password information when plain text authentication
is adopted or including key ID, MD5 authentication data length and sequence number when MD5

authentication is adopted.

NOTE:

RFC 1723 only defines plain text authentication. For information about MD5 authentication, see

RFC

2453 RIP Version 2.

Protocols and Standards

RFC 1058; Routing Information Protocol

RFC 1723: RIP Version 2 - Carrying Additional Information

RFC 1721: RIP Version 2 Protocol Analysis

RFC 1722: RIP Version 2 Protocol Applicability Statement

RFC 1724: RIP Version 2 MIB Extension

RFC 2082: RIP-2 MD5 Authentication

RFC 2453: RIP Version 2

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