CX916, CX916L, and CX930 Switch Modules V100R001 Alarm Handling 06
ISIS_1.3.6.1.3.37.2.0.12 isisAreaMismatch
Description
IS-IS received a level-1 Hello PDU whose area address is different from the local area address. (isisSysInstance=[isisSysInstance], isisSysLevelIndex=[isisSysLevelIndex], isisCircIndex=[isisCircIndex], isisCircIfIndex=[isisCircIfIndex], isisPduFragment=[isisPduFragment], ifIndex=[ifIndex], IfName=[IfName])
IS-IS received a Level-1 Hello PDU that carried an area address different from the local one.
Attributes
Attribute |
Description |
|---|---|
Alarm or Event |
Event |
Trap Severity |
Error |
Mnemonic Code |
isisAreaMismatch |
Trap OID |
1.3.6.1.3.37.2.0.12 |
Alarm ID |
This is an event trap and does not involve alarm ID. |
Alarm Type |
This is an event trap and does not involve alarm type. |
Raise or Clear |
This is an event trap and does not involve alarm generation or clearance. |
Match trap |
This is an event trap and does not involve the matching trap. |
Parameters
Parameter |
Description |
|---|---|
isisSysInstance |
Indicates the ID of the IS-IS process. |
isisSysLevelIndex |
Indicates the IS-IS level:
|
isisCircIndex |
Indicates the index of the interface. |
isisCircIfIndex |
Indicates the index of the interface. |
isisPduFragment |
Indicates the fragment of 64-byte PDU header. |
ifIndex |
Indicates the IF index of the interface. |
IfName |
Indicates the name of the interface. |
VB
VB OID |
VB Name |
VB Index |
|---|---|---|
1.3.6.1.3.37.1.1.1.1.1 |
isisSysInstance |
isisSysInstance |
1.3.6.1.3.37.1.2.1.1.1 |
isisSysLevelIndex |
isisSysInstance isisSysLevelIndex |
1.3.6.1.3.37.1.3.1.1.2 |
isisCircIfIndex |
isisSysInstance isisCircIndex |
1.3.6.1.3.37.1.10.1.1.2 |
isisPduFragment |
isisSysInstance |
Impact on the System
1. If the trap is triggered by a hardware fault of the device, route flapping may occur and the CPU usage will increase.
2. If the trap is triggered by an incorrect configuration, neighbors cannot be established, and routes cannot be learnt from each other.
Procedure
- Based on the IS-IS packet format defined in ISO10589, search for the pdu-fragment field (in hexadecimal) in the trap and fetch the system ID of the source . Then, run the display this command in the IS-IS view to check whether the area address configured on the source is the same as that of the local .
Table 33-5 Methods of searching for system IDs and types of IS-IS packets
Searching for the Packet Type
Searching for the System ID
Hello: the 5th byte in the pdu-fragment field being 0f, 10, or 11
The system ID is continuous 6 bytes after the 10th byte in the pdu-fragment field
LSP: the 5th byte in the pdu-fragment field being 12 or 14
The system ID is continuous 6 bytes after the 13th byte in the pdu-fragment field
SNP: the 5th byte in the pdu-fragment field being 18, 19, 1A, or 1B
The system ID is continuous 6 bytes after the 11th byte in the pdu-fragment field
- (Run the undo network-entity command with caution.) Run the network-entity command in the IS-IS view of the source to configure a new IS-IS area address so that the area address of the source is consistent with the local address. Then, check whether the trap is cleared.
- Collect the trap information, log information, and configuration of the , and contact technical support personnel technical personnel.
- End.