Qtech QSW-3900-48-SFP-DC [89/245] Protocols and standards

Qtech QSW-3900-48-SFP-DC [89/245] Protocols and standards
QTECH Software Configuration Manual
7-88
7.2.4.1 Working mechanism
Routing information is sent in triggered updates rather than periodic broadcasts to reduce the routing management
cost the WAN.
l Only when data in the routing table changes or the next hop is unreachable, a routing
update message is sent.
l Since the periodic update delivery is canceled, an acknowledgement and
retransmission mechanism is required to guarantee successful updates transmission on
WAN.
7.2.4.2 Message types
RIP use three new types of message which are identified by the value of the Command filed.
l update request (type value 9) : Requests needed routes from the peer.
l update response (type value 10) : Contains the routes requested by the peer.
l Update Acknowledge (type value 11) : Acknowledges received update response messages.
7.2.4.3 TRIP retransmission mechanism
· If receiving no update responses after sending an update request, a router sends the request again after a
specified interval. If still receiving no update response after the upper limit for sending requests is reached,
the router considers the neighbor unreachable.
· If receiving no Update Acknowledge after sending an update response, a router sends the update response
again after a specified interval. If still receiving no Update Acknowledge after the upper limit for sending
update responses is reached, the router considers the neighbor unreachable.
7.2.5 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 : RIPv2 MD5 Authentication
RFC 2091 : Triggered Extensions to RIP to Support Demand Circuits
7.3 RIP configuration list
In every configuration, enable RIP and RIP network before configuring other functions. Configuring
functions which relates to interface is not restricted by RIP enabling. Caution : after disabling RIP, original
parameter still exists, and it will be effective when enable RIP next time.
Configuration list is as following :
· Enable RIP
· Specify IP network to run RIP protocol
· RIP working status of specified interface
· RIP version of specified interface
· Enable host routing
· Enable route convergence
· Configure authentication to RIP packet
· Configure split
· Configure metricin
· Define prefix ACL
· Configure route redistribute
· Configure route filtration
· Display RIP configuration

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