tnPortEncapType

TN-PORT-MIB · .1.3.6.1.4.1.7483.6.1.2.2.4.2.1.12

Object

column r/w Enumeration
The type of encapsulation protocol configured on this
port's network interface.  If tnPortEncapType has a value
of 'nullEncap', frames received will not carry any tags
or labels and as a result only one service can be
configured on this port.  Sometimes this is referred to
as raw Ethernet packets.
              
If tnPortEncapType has a value of 'qEncap', ingress frames
carry 802.1q tags where each different tag can signify a
different service. This is not a valid value if
tnPortClass has a value of 'sonetPath'.
              
If tnPortEncapType has a value of 'bcpNullEncap',
Bcp is used on the sonet path as the NCP control protocol.
The BCP IEEE 802 Tagged Frame Configuration Option (type 8)
is negotiated to 'enabled'.  VLAN tagged frames are
allowed into the sonet path.  Only a single SAP can
be associated with the sonet path.  'bcpNullEncap' is
valid only if tnPortClass has a value of 'sonetPath'.
              
If tnPortEncapType has a value of 'bcpDot1qEncap',
BCP is used as the NCP control protocol.  The BCP IEEE 802
Tagged Frame Configuration Option (type 8) is negotiated to
'enabled'.  VLAN tagged frames are allowed on the sonet path.
This encapsulation type is required when multiple SAPs are
defined on the sonet path where each one is service
delimited by a provisioned Dot1q tag.  When 'bcpDot1qEncap'
is specified, BCP does not enter the 'open' state unless
the far end peer also supports 'bcpDot1qEncap'.  This allows
a LCP negotiation to transmit configuration request and
confirmation messages to enable this feature.  'bcpDot1qEncap'
is a valid value only if tnPortClass has a value of 'sonetPath'.
              
If tnPortEncapType has a value of 'ipcpEncap',
BCP will not be used on this sonet path.  IPCP NCP is used
instead.  'ipcpEncap' is a valid only if tnPortClass has
a value of 'sonetPath'.
              
If tnPortEncapType has a value of 'frEncap', Frame Relay is
the expected encapsulation.
              
If tnPortEncapType has a value of 'pppAutoEncap', IPCP is
automatically enabled. This encap type is only valid on
ports/paths in network mode.
              
If tnPortEncapType has a value of 'atmEncap', the encapsulation
on the port is ATM. The 'atmEncap' is also used when mirroring
ATM ports.
              
If tnPortEncapType has a value of 'wanMirrorEncap', the
port is used for mirroring of frame-relay and POS ports. On such
ports no link management protocol would run.
              
If tnPortEncapType has a value of 'ciscoHDLCEncap', the Cisco HDLC
encapsulation is applied. This encap type is only valid if
TmnxPortClass has a value of 'tdm' or 'sonet'.
              
If tnPortEncapType has a value of 'cemEncap', encapsulation of
frames will be circuit emulation.  This is used to support transparent
transmission of frames.  This encap type is only valid
if TmnxPortClass has a value of 'tdm' or 'sonet' in access mode.
              
tnPortEncapType is set to 'unknown' for physical SONET/SDH and
TDM ports.

Context

MIB
TN-PORT-MIB
OID
.1.3.6.1.4.1.7483.6.1.2.2.4.2.1.12
Type
column
Access
readwrite
Status
current
Parent
tnPortEntry
Table
tnPortTable
Siblings
64

Syntax

Enumeration

Values & Constraints

Enumerated Values
0unknown
1nullEncap
2qEncap
3mplsEncap
4bcpNullEncap
5bcpDot1qEncap
6ipcpEncap
7frEncap
8pppAutoEncap
9atmEncap
10qinqEncap
11wanMirrorEncap
12ciscoHDLCEncap
13cemEncap

Related Objects

Sibling Objects