PIM-STD_1.3.6.1.2.1.157.0.5 PimInterfaceElection
Description
PIM-STD/1/PUBLIC_INTELECTDR:OID [oid] Interface is elected to be DR. (IfIndex=[integer], IfIPverion=[integer], IfAddrType=[integer], Addr=[binary])
The switch was elected as a DR on a shared network segment.
Parameters
| Name | Meaning |
|---|---|
oid |
Indicates the MIB object ID of the alarm. |
IfIndex |
Index of an interface |
IfIPverion |
Indicates the version of the interface address.
|
IfAddrType |
Indicates the inetAddressType of an interface
address. The value can be:
|
Addr |
IP address of an interface |
Impact on the System
If the source-side DR changes, the RP receives an incorrect Register message; if the member-side DR changes, the RP receives an incorrect Join message.
Possible Causes
Cause 1:
The PIM interface received a new Hello packet and had a higher DR priority or IP address than other interfaces on the shared network segment.
The start of a PIM interface triggers a DR change. This is a normal situation, and therefore a DR change during the interval for the first Hello packet will not trigger this trap.
Cause 2:
After a PIM interface went Up, the PIM interface did not receive Hello packets after the interval between Hello packets expired.
Procedure
- Check whether the interface can be a DR based on the network
plan.
If the interface can be a DR, go to step 8.
If the interface cannot be a DR, go to step 2.
- Run the display pim
interface interface-type interface-number command to view the IP address of the PIM interface. Check whether
the IP address of the interface is followed by a word "local."
If there is the word "local", the interface is the DR. Then go to step 3.
If there is not the word "local", go to step 8.
- Run the display pim
interface interface-type interface-number command to check whether interfaces on the shared network segment
all allow the Hello packets to carry the DR priority field.
If they support the function, obtain the interface DR priority and go to step 4.
If they do not support the function, go to step 5.
- Run the display pim
neighbordisplay pim interface neighbor-address command to view the neighbor priorities. Check whether all neighbors'
DR priorities are lower than the interface DR priority.
If all neighbors have lower priorities than the PIM interface, run the pim hello-option dr-priority priority command to set a lower priority for the interface than the priorities of neighbors. Then go to step 6.
If all neighbors have higher priorities than the PIM interface, run the ip address ip-address { mask | mask-length } command to configure a lower IP address for the interface than IP addresses of the neighbors. Then go to step 6.
- If all neighbors' priorities are higher than the PIM interface, run the ip address ip-address { mask | mask-length } command to configure a lower IP address for the interface than its neighbors. Then go to step 6.
- Run the display pim
interface interface-type interface-number command to the DR information. Check whether the DR information
is changed.
If the DR information is changed, go to step 8.
If the DR information is unchanged, go to step 7.
- Collect alarm information and configuration information, and then contact technical support personnel.
- End.