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xStack® DGS-3620 Series Managed Switch Web UI Reference Guide
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RIP Command Codes
The field VERSION contains the protocol version number (1 in this case), and is used by the receiver to verify
which version of RIP the packet was sent.
RIP 1 Message
RIP is not limited to TCP/IP. Its address format can support up to 14 octets (when using IP, the remaining 10
octets must be zeros). Other network protocol suites can be specified in the Family of Source Network field (IP has
a value of 2). This will determine how the address field is interpreted.
RIP specifies that the IP address, 0.0.0.0, denotes a default route.
The distances, measured in router hops are entered in the Distance to Source Network, and Distance to
Destination Network fields.
RIP 1 Route Interpretation
RIP was designed to be used with classed address schemes, and does not include an explicit subnet mask. An
extension to version 1 does allow routers to exchange subnet addresses, but only if the subnet mask used by the
network is the same as the subnet mask used by the address. This means the RIP version 1 cannot be used to
propagate classless addresses.
Routers running RIP version 1 must send different update messages for each IP interface to which it is connected.
Interfaces that use the same subnet mask as the router's network can contain subnet routes, other interfaces
cannot. The router will then advertise only a single route to the network.
RIP Version 2 Extensions
RIP version 2 includes an explicit subnet mask entry, so RIP version 2 can be used to propagate variable length
subnet addresses or CIDR classless addresses. RIP version 2 also adds an explicit next hop entry, which speeds
convergence and helps prevent the formation of routing loops.
RIP2 Message Format
The message format used with RIP2 is an extension of the RIP1 format. RIP version 2 also adds a 16-bit route tag
that is retained and sent with router updates. It can be used to identify the origin of the route. Because the version
number in RIP2 occupies the same octet as in RIP1, both versions of the protocols can be used on a given router
simultaneously without interference.
RIP Settings
This window is used to configure the RIP settings for one or more IP interfaces.
To view the following window, click L3 Features > RIP > RIP Settings, as shown below:
Turn on trace mode.
Turn off trace mode.
Reserved for Sun Microsystems internal use.
Update Request.
Update Response.
Update Acknowledgement
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