olsrv2TibAttNetworksSetSeqNo
OLSRv2-MIB ·
.1.3.6.1.2.1.219.1.2.10.1.6
Object
column
Unsigned32
This is the greatest Advertised Neighbor Sequence
Number (ANSN) in any TC message received
that originated from the router
with originator address AN_orig_addr
(i.e., that contributed to the information
contained in this Tuple). The AN_orig_addr
is defined by the tuple
(olsrv2TibAttNetworksSetOrigIpAddrType,
olsrv2TibAttNetworksSetOrigIpAddr).
Sequence numbers are used in the OLSRv2 protocol
for the purpose of discarding 'old' information,
i.e., messages received out of order. However,
with a limited number of bits for representing
sequence numbers, wraparound (that the sequence
number is incremented from the maximum possible
value to zero) will occur. To prevent this from
interfering with the operation of this protocol,
the following MUST be observed when determining
the ordering of sequence numbers.
The term MAXVALUE designates in the following one
more than the largest possible value for a sequence
number. For a 16-bit sequence number (as are those
defined in this specification), MAXVALUE is 65536.
The sequence number S1 is said to be 'greater than'
the sequence number S2 if:
o S1 > S2 AND S1 - S2 < MAXVALUE/2 OR
o S2 > S1 AND S2 - S1 > MAXVALUE/2
When sequence numbers S1 and S2 differ by MAXVALUE/2,
their ordering cannot be determined. In this case,
which should not occur, either ordering may be
assumed.
Thus, when comparing two messages, it is possible
- even in the presence of wraparound - to determine
which message contains the most recent information.
Context
- MIB
- OLSRv2-MIB
- OID
.1.3.6.1.2.1.219.1.2.10.1.6- Type
- column
- Access
- readonly
- Status
- current
- Parent
- olsrv2TibAttNetworksSetEntry
- Table
- olsrv2TibAttNetworksSetTable
- Siblings
- 8
Syntax
Unsigned32
Values & Constraints
Object Constraints
range: 0-65535
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| olsrv2TibAttNetworksSetOrigIpAddrType The type of the olsrv2TibAttNetworksSetOrigIpAddr,
as defined in the InetAddress MIB module (RFC4001).
Only the values 'ipv4(1)' and
'ipv6(2)' are supported. | column | Enumeration | .1.3.6.1.2.1.219.1.2.10.1.1 |
| olsrv2TibAttNetworksSetExpireTime olsrv2TibAttNetworksSetExpireTime
specifies the value of sysUptime when this
entry SHOULD expire and be removed from the
olsrv2TibAttNetworksSetTable. | column | centiseconds SNMPv2-TCTimeStamp | .1.3.6.1.2.1.219.1.2.10.1.10 |
| olsrv2TibAttNetworksSetOrigIpAddr This is the originator address, of type
olsrv2TibAttNetworksSetOrigIpAddrType, of a
router that can act as gateway to the
network with address AN_net_addr. The
AN_net_addr is def… | column | OctetString | .1.3.6.1.2.1.219.1.2.10.1.2 |
| olsrv2TibAttNetworksSetNetIpAddrType The type of the olsrv2TibAttNetworksSetNetIpAddr,
as defined in the InetAddress MIB module (RFC 4001).
Only the values 'ipv4(1)' and
'ipv6(2)' are supported. | column | Enumeration | .1.3.6.1.2.1.219.1.2.10.1.3 |
| olsrv2TibAttNetworksSetNetIpAddr This is the network address, of type
olsrv2TibAttNetworksSetNetIpAddrType, of an
attached network, that may be reached via
the router with originator address AN_orig_addr.
The AN_… | column | OctetString | .1.3.6.1.2.1.219.1.2.10.1.4 |
| olsrv2TibAttNetworksSetNetIpAddrPrefixLen Indicates the number of leading one bits that form the
mask to be logically ANDed with the destination address
before being compared to the value in the
olsrv2TibAttNetworksSetNet… | column | bits INET-ADDRESS-MIBInetAddressPrefixLength | .1.3.6.1.2.1.219.1.2.10.1.5 |
| olsrv2TibAttNetworksSetDist The number of hops to the network
with address AN_net_addr from the router with
originator address AN_orig_addr.
The AN_orig_addr is defined by the tuple
(olsrv2TibAttNetworksS… | column | hops Unsigned32 | .1.3.6.1.2.1.219.1.2.10.1.7 |
| olsrv2TibAttNetworksSetMetricValue The metric of the link from the router with
originator address AN_orig_addr to the attached
network with address AN_net_addr.
The AN_net_addr is defined by the tuple
(olsrv2TibA… | column | Olsrv2MetricValueCompressedFormTC | .1.3.6.1.2.1.219.1.2.10.1.9 |