D-Link DES-3326SRM - Switch - Stackable Product Manual page 218

The COMMAND field specifies an operation according the following table:
RIP Command Codes
Command
1
2
3
4
5
9
10
11
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 subnetted 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.
D-Link DES-3326S Layer 3 Switch
Meaning
Request for partial or full routing
information
Response containing
distance pairs from
routing table
Turn on trace mode (obsolete)
Turn off trace mode (obsolete)
Reserved for Sun Microsystem's
internal use
Update Request
Update Response
Update Acknowledgement
network-
sender's
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