Rip Troubleshooting - Planet XGS3-42000R User Manual

35.4 RIP Troubleshooting

The RIP protocol may not be working properly due to errors such as physical connection, configuration error
when configuring and using the RIP protoc ol. So users should pay attention to following:
 Enabling dot1q-tunnel on Trunk port will make the tag of the data packet unpredictable which is not
required in the application. So it is not recommended to enable dot 1q-t unnel on Trunk port
VLAN-translation is in operation .
 Configuring in port-c hannel is not supported.
 Enabled with S TP/MS TP is not supported.
 Enabled with PVLA N is not supported.
 If MAC address binding cannot be enabled for a port, make sure the port is not enabling port
aggregation and is not configured as a Trunk port. MAC address binding is exclusive to such
configurations. If MAC address binding is to be enabled, the functions mentioned above must be
disabled first.
 If a secure address is set as static address and deleted, that secure address will be unusable even
though it exists. For this reason, it is recommended to avoid static address for ports enabling MAC
address.
 DHCP option 82 is implemented as a sub-function module of DHCP Relay Agent. Before using it, users
should make sure that the DHCP Relay Agent is configured correctly.
 DHCP option 82 needs the DHCP Relay Agent and the DHCP server cooperate to finish the task of
allocating IP addresses. The DHCP server should set allocating policy correctly depending on t he
network topology of the DHCP Relay Agent, or, even the Relay Agent can operate normally, the
allocation of addresses will fail. When there is more than one kind of Relay Agent, please pay attention
to the retransmitting policy of the interface DHCP request messages.
 To implement the option 82 function of DHCP Relay Agent, the "debug dhcp relay packet" command
can be used during the operating procedure, including adding the contents of option 82, the
retransmitting policy adopt ed, the option 82 cont ents of the server peeled by the Relay Agent and etc.,
such information can help users to do troubleshooting.
 To implement the option 82 function of DHCP server, the "debug ip dhcp server packet" command c an
be used during the operating procedure to display the procedure of data packets processing of the
server, including dis playing the identified option 82 information of the request message and the option
82 information returned by the reply message.
 First ensure the physic connection is correct
 Second, ens ure the interfac e and chain protocol are UP (use show interface command)
 Then initiate the RIP protocol (use router rip command) and configure the segment (use network
command) and set RIP protocol parameter on corres ponding interfaces, such as the option bet ween
RIP -I and RIP -II
 After that, one feature of RIP protoc ol should be noticed ---t he Layer 3 switch running RIP protocol
sending route updating messages to all neighboring Lay er 3 switches every 30 seconds. A Layer 3
switch is considered inaccessible if no route updating messages from the switch is received within 180
seconds, then the route to the switch will remains in the route table for 120 seconds before it is deleted.
Therefore, if to delet e a RIP route, this route item is assured to be deleted from rout e table after 300
seconds. When exchanging routing messages with CE using RIP protocol on the PE router, we should
first create corresponding VPN routing/transmitting examples to associate with corresponding
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except the