BGP MIB notes

The 7210 SAS implementation of the RFC 1657 MIB variables listed in the following table differs from the IETF MIB specification.

Table: 7210 SAS and IETF MIB variations

MIB variable

Description

RFC 1657 allowed values

Allowed values

bgpPeerMinASOriginationInterval

Time interval in seconds for the MinASOriginationInterval timer. The suggested value for this timer is 15 seconds.

1 to 65535

2 to 255

bgpPeerMinRouteAdvertisementInterval

Time interval in seconds for the MinRouteAdvertisementInterval timer. The suggested value for this timer is 30.

1 to 65535

1 to 255 1

If SNMP is used to set a value of X to the MIB variable in the following table, there are three possible results:

Table: MIB variable with SNMP

Condition

Result

X is within IETF MIB values

and

X is within 7210 SAS values

SNMP set operation does not return an error

MIB variable set to X

X is within IETF MIB values

and

X is outside 7210 SAS values

SNMP set operation does not return an error

MIB variable set to ‟nearest” 7210 SAS supported value (for example, 7210 SAS range is 2 to 255 and X = 65535, MIB variable is set to 255)

Log message generated

X is outside IETF MIB values

and

X is outside 7210 SAS values

SNMP set operation returns an error

When the value set using SNMP is within the IETF allowed values and outside the 7210 SAS values as specified in the preceding tables, a log message is generated. The log messages that display are similar to the following log messages:

Sample log message for setting bgpPeerMinASOriginationInterval to 65535

576 2006/11/12 19:45:48 [Snmpd] BGP-4-bgpVariableRangeViolation: Trying to set 
bgpPeerMinASOrigInt to 65535 - valid range is [2-255] - setting to 255

Sample log message for setting bgpPeerMinASOriginationInterval to 1

594 2006/11/12 19:48:05 [Snmpd] BGP-4-bgpVariableRangeViolation: Trying to set 
bgpPeerMinASOrigInt to 1 - valid range is [2-255] - setting to 2

Sample log message for setting bgpPeerMinRouteAdvertisementInterval to 256

535 2006/11/12 19:40:53 [Snmpd] BGP-4-bgpVariableRangeViolation: Trying to set 
bgpPeerMinRouteAdvInt to 256 - valid range is [2-255] - setting to 255

Sample log message for setting bgpPeerMinRouteAdvertisementInterval to 1

566 2006/11/12 19:44:41 [Snmpd] BGP-4-bgpVariableRangeViolation: Trying to set 
bgpPeerMinRouteAdvInt to 1 - valid range is [2-255] - setting to 2
1 A value of 0 is supported when the rapid-update command is applied to an address family that supports it.