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- === NOSview [301]
- rip
- ===
-
- _________________________________________________________________
- rip accept <incoming_gateway_host>
- _________________________________________________________________
- Remove the specified gateway from the RIP filter table, allowing
- future broadcasts from that gateway to be accepted.
-
- >> Example: rip accept ns9liz
-
-
- _________________________________________________________________
- rip add <destination_host> <seconds> [<flags>]
- _________________________________________________________________
- Add an entry to the RIP broadcast table. The IP routing table
- will be sent to <destination_host> at <seconds> intervals.
-
- Flags settings:
- 1: include route to self
- 2: split horizon
- 4: triggered update
-
- If flags is specified as 1, then "split horizon" processing will
- be performed for this destination. That is, any IP routing table
- entries pointing to the interface that will be used to send this
- update will be removed from the update. If split horizon
- processing is not specified, then all routing table entries
- except those marked "private" will be sent in each update.
- (Private entries are never sent in RIP packets).
-
- Triggered updates are always done. That is, any change in the
- routing table that causes a previously reachable destination to
- become unreachable will trigger an update that advertises the
- destination with metric 15, defined to mean "infinity".
-
- Note that for RIP packets to be sent properly to a broadcast
- address, there must exist correct IP routing and ARP table
- entries that will first steer the broadcast to the correct
- interface and then place the correct link-level broadcast address
- (callsign) in the link-level destination field.
-
- If a standard IP broadcast address convention is used (e.g.
- 128.96.0.0 or 128.96.255.255) then chances are you already have
- the necessary IP routing table entry, but unusual subnet or
- cluster-addressed networks may require special attention.
- However, an 'arp add' command will be required to translate this
- address to the appropriate link level broadcast address.
-
- For example, for an AX.25 packet radio channel:
-
- arp add 44.255.255.255 ax25 qst-0
-
- and for an Ethernet network:
-
- arp add 128.96.0.0 ethernet ff:ff:ff:ff:ff:ff
-
-
- >> Example: rip add uk 900 6
-
-
- _________________________________________________________________
- rip drop <destination_host>
- _________________________________________________________________
- Remove an entry from the RIP broadcast table.
-
- >> Example: rip drop ns9liz
-
-
- _________________________________________________________________
- rip merge [on | off] Default: on
- _________________________________________________________________
- This flag controls an experimental feature for consolidating
- redundant entries in the IP routing table.
-
- When rip merging is on, the table is scanned after processing
- each RIP update. An entry is considered redundant if the
- target(s) it covers would be routed identically by a less
- "specific" entry already in the table. That is, the target
- address(es) specified by the entry in question must also match
- the target addresses of the less specific entry and the two
- entries must have the same interface and gateway fields.
-
- For example, if the routing table contains
-
- Dest Len Interface Gateway Metric P Timer Use
- 1.2.3.4 32 ethernet0 128.96.1.2 1 0 0 0
- 1.2.3 24 ethernet0 128.96.1.2 1 0 0 0
-
- then the first entry would be deleted as redundant since packets
- sent to 1.2.3.4 will still be routed correctly by the second
- entry. Note that the relative metrics of the entries are
- ignored.
-
- >> Example: rip merge off
-
-
- _________________________________________________________________
- rip refuse <incoming_gateway_host>
- _________________________________________________________________
- Refuse to accept RIP updates from the specified gateway by adding
- the gateway to the RIP filter table. It may be later removed
- with the 'rip accept' command.
-
- >> Example: rip refuse ns9liz
-
-
- _________________________________________________________________
- rip request <incoming_gateway_host>
- _________________________________________________________________
- Send a RIP Request packet to the specified gateway, causing it to
- reply with a RIP Response packet containing its routing table.
-
- >> Example: rip request ns9liz
-
-
- _________________________________________________________________
- rip status
- _________________________________________________________________
- Display RIP status, including a count of the number of packets
- sent and received, the number of requests and responses, the
- number of unknown RIP packet types, and the number of refused RIP
- updates from hosts in the filter table.
-
- A list of the addresses and intervals to which periodic RIP
- updates are being sent is also shown, along with the contents of
- the filter table.
-
-
- _________________________________________________________________
- rip trace [0 | 1 | 2] Default: 0
- _________________________________________________________________
- This variable controls the tracing of incoming and outgoing RIP
- packets.
-
- Setting it to 0 disables all RIP tracing.
-
- A value of 1 causes changes in the routing table to be displayed,
- while packets that cause no changes cause no output.
-
- Setting the variable to 2 produces maximum output, including
- tracing of RIP packets that cause no change in the routing table.
-
- >> Example: rip trace 2
-
-
- _________________________________________________________________
- rip ttl [<seconds>] Default: 240
- _________________________________________________________________
- Display or set the time-to-live timer. (This is not the RIP ttl
- counter, where 16=infinite).
-
- Set this timer before starting RIP. Change the timer only in
- cooperation with your surrounding nodes.
-