bgp4PathAttrASPathSegment
BGP4-MIB ·
.1.3.6.1.2.1.15.6.1.5
Object
column
OctetString
The sequence of AS path segments. Each AS
path segment is represented by a triple
<type, length, value>.
The type is a 1-octet field that has two
possible values:
1 AS_SET: unordered set of ASes that a
route in the UPDATE message
has traversed
2 AS_SEQUENCE: ordered set of ASes that
a route in the UPDATE message
has traversed.
The length is a 1-octet field containing the
number of ASes in the value field.
The value field contains one or more AS
numbers. Each AS is represented in the octet
string as a pair of octets according to the
following algorithm:
first-byte-of-pair = ASNumber / 256;
second-byte-of-pair = ASNumber & 255;
Known Issues:
o BGP Confederations will result in
a type of either 3 or 4.
o An AS Path may be longer than 255 octets.
This may result in this object containing
a truncated AS Path.
Context
- MIB
- BGP4-MIB
- OID
.1.3.6.1.2.1.15.6.1.5- Type
- column
- Access
- readonly
- Status
- current
- Parent
- bgp4PathAttrEntry
- Table
- bgp4PathAttrTable
- Siblings
- 13
Syntax
OctetString
Values & Constraints
Object Constraints
range: 2-255
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| bgp4PathAttrPeer The IP address of the peer where the path
information was learned. | column | SNMPv2-SMIIpAddress | .1.3.6.1.2.1.15.6.1.1 |
| bgp4PathAttrAggregatorAS The AS number of the last BGP4 speaker that
performed route aggregation. A value of
zero (0) indicates the absence of this
attribute.
Note that propagation of AS o… | column | Integer32 | .1.3.6.1.2.1.15.6.1.10 |
| bgp4PathAttrAggregatorAddr The IP address of the last BGP4 speaker
that performed route aggregation. A
value of 0.0.0.0 indicates the absence
of this attribute. | column | SNMPv2-SMIIpAddress | .1.3.6.1.2.1.15.6.1.11 |
| bgp4PathAttrCalcLocalPref The degree of preference calculated by the
receiving BGP4 speaker for an advertised
route. A value of -1 indicates the
absence of this attribute.
Known Issues:
o T… | column | Integer32 | .1.3.6.1.2.1.15.6.1.12 |
| bgp4PathAttrBest An indication of whether this route
was chosen as the best BGP4 route for this
destination. | column | Enumeration | .1.3.6.1.2.1.15.6.1.13 |
| bgp4PathAttrUnknown One or more path attributes not understood by
this BGP4 speaker.
Path attributes are recorded in the Update Path
attribute format of type, length, value.
… | column | OctetString | .1.3.6.1.2.1.15.6.1.14 |
| bgp4PathAttrIpAddrPrefixLen Length in bits of the IP address prefix in
the Network Layer Reachability
Information field. | column | Integer32 | .1.3.6.1.2.1.15.6.1.2 |
| bgp4PathAttrIpAddrPrefix An IP address prefix in the Network Layer
Reachability Information field. This object
is an IP address containing the prefix with
length specified by
bgp4PathAttrI… | column | SNMPv2-SMIIpAddress | .1.3.6.1.2.1.15.6.1.3 |
| bgp4PathAttrOrigin The ultimate origin of the path
information. | column | Enumeration | .1.3.6.1.2.1.15.6.1.4 |
| bgp4PathAttrNextHop The address of the border router that
should be used for the destination
network. This address is the NEXT_HOP
address received in the UPDATE packet. | column | SNMPv2-SMIIpAddress | .1.3.6.1.2.1.15.6.1.6 |
| bgp4PathAttrMultiExitDisc This metric is used to discriminate
between multiple exit points to an
adjacent autonomous system. A value of -1
indicates the absence of this attribute.
Known Iss… | column | Integer32 | .1.3.6.1.2.1.15.6.1.7 |
| bgp4PathAttrLocalPref The originating BGP4 speaker's degree of
preference for an advertised route. A
value of -1 indicates the absence of this
attribute.
Known Issues:
o The BGP-4 speci… | column | Integer32 | .1.3.6.1.2.1.15.6.1.8 |
| bgp4PathAttrAtomicAggregate If the ATOMIC_AGGREGATE attribute is present
in the Path Attributes then this object MUST
have a value of 'lessSpecificRouteNotSelected'.
If the ATOMIC_AGGREGATE at… | column | Enumeration | .1.3.6.1.2.1.15.6.1.9 |