tnOamPingCtlSize

The value of tnOamPingCtlSize specifies the size of the OAM Echo
message.
              
This parameter is optional and is valid only if tnOamPingCtlTestMode
has a value of 'sdpPing', 'macPing', 'lspPing', 'vprnPing',
'mfibPing', 'vccvPing', 'icmpPing', 'p2mpLspPing', 'ethCfmLoopback',
or 'ethCfmTwoWaySlm'.
              
The minimum, maximum, and default values for the
tnOamPingCtlTestMode cases are:
              
 'ethCfmLoopback' :       0,  1500,   0
 'ethCfmTwoWaySlm':       0,  1500,   0
 'ethCfmTwoWayDelay':     0,  1500,   0
 'ethCfmOneWayDelay':     0,  1500,   0
 'icmpPing'       :       0, 16384,  56
 'lspPing'        :      80,  9198,  80 - LSP prefix specified
                  :      92,  9198,  92 - LSP name specified
 'macPing'        :       1,  9198,  72
 'mfibPing'       :       1,  9198,  72
 'p2mpLspPing'    :   92|97,  9198,  92 - LSP name, 0 S2L specified
                  : 104|109,  9198, 104 - LSP name, 1 S2L specified
                  : 112|117,  9198, 112 - LSP name, 2 S2L specified
                  : 120|125,  9198, 120 - LSP name, 3 S2L specified
                  : 128|133,  9198, 128 - LSP name, 4 S2L specified
                  : 136|141,  9198, 136 - LSP name, 5 S2L specified
                  :   88|93,  9198,  88 - LDP id, 0 leaf-addr specified
                  : 100|105,  9198, 100 - LDP id, 1 leaf-addr specified
                  : 108|113,  9198, 108 - LDP id, 2 leaf-addr specified
                  : 116|121,  9198, 116 - LDP id, 3 leaf-addr specified
                  : 124|129,  9198, 124 - LDP id, 4 leaf-addr specified
                  : 132|137,  9198, 132 - LDP id, 5 leaf-addr specified
                  :   92|97,  9198,  92 - LDP SSM, 0 leaf-addr specified
                  : 104|109,  9198, 104 - LDP SSM, 1 leaf-addr specified
                  : 112|117,  9198, 112 - LDP SSM, 2 leaf-addr specified
                  : 120|125,  9198, 120 - LDP SSM, 3 leaf-addr specified
                  : 128|133,  9198, 128 - LDP SSM, 4 leaf-addr specified
                  : 136|141,  9198, 136 - LDP SSM, 5 leaf-addr specified
 'sdpPing'        :      72,  9198,  72
 'vccvPing'       :      88,  9198,  88 - FEC 128 pseudowire
                  :     120,  9198, 120 - FEC 129 pseudowire
 'vprnPing'       :       1,  9198,  72
              
An RSVP-TE P2MP LSP consists of source-to-leaf (S2L) sub-LSPs.
              
For P2MP LSP ping, a gap in the supported range of tnOamPingCtlSize
arises from the inclusion of the Pad TLV (see RFC 4379 section 3.4).
For example, when no S2L sub-LSP is specified for a RSVP P2MP LSP,
the minimum ping size is 92. But the next valid minimum ping size
is 97 due to the inclusion of the Pad TLV.
              
When the OAM message is encapsulated in an IP/GRE SDP, the
IP 'DF' (Don't Fragment) bit is set.  If any segment of the path
between the sender and receiver cannot handle the message size,
the message is discarded.  MPLS LSPs are not expected to fragment
the message either, as the message contained in the LSP is not an
IP packet.
              
When tnOamPingCtlTestMode has a value of 'ethCfmLoopback', or
'ethCfmTwoWaySlm' the value of this object specifies the number of
octets in the Value field of the Data TLV of the Ethernet CFM packet.
If zero is specified, the packet has no Data TLV.
              
When tnOamPingCtlTestMode has a value of 'icmpPing', the value
of this object specifies the payload size following the ICMP
header.
              
When tnOamPingCtlTestMode has a value of 'mtuPing', changing the
message size is a method of checking the ability of an SDP
to support a particular path-mtu value.  The size of the message
does not include the SDP encapsulation, VC-Label (if applied)
or any DLC headers or trailers.
              
Before 6.0 release, the minimum size in 'sdpPing' is 40 octets.
Such shorter packet has no timestamp information but should still
be accepted for interoperability purpose. However, new 'sdpPing'
should include the timestamp information.

MIB

TN-OAM-TEST-MIB

OID

.1.3.6.1.4.1.7483.6.1.2.11.1.4.1.18

Type

column

Access

readwrite

Status

current

Units

octets

Parent

tnOamPingCtlEntry