Nokia 7705 - Page 311

To Next Page

To Previous Page

MPLS Guide PCEP

Use subject to Terms available at: www.nokia.com

311

Note:

1. Nokia proprietary

The behavior and limitations of the implementation of the objects in Table 32 are as

follows.

• The PCE treats all supported objects received in a PCReq message as

mandatory, regardless of whether the P-flag in the object’s common header is

set (mandatory object) or not (optional object).

• The PCC implementation will always set the B-flag (B=1) in the metric object

containing the hop metric value, which means that a bound value must be

included in PCReq message. The PCE returns the computed value in the

PCRep message with flags set identically to the PCReq message.

• The PCC implementation will always set flags B=0 and C=1 in the metric object

for the IGP or TE metric values in the PCReq message. This means that the

request is to optimize (minimize) the metric without providing a bound value. The

PCE returns the computed value in the PCRep message with flags set

identically to the PCReq message.

• The IRO and LOAD-BALANCING objects are not part of the NSP PCE feature.

If the PCE receives a PCReq message with one or more of these objects, it will

ignore them regardless of the setting of the P-flag, and will process the path

computations normally.

• The LSPA, metric, and bandwidth objects are also included in the PCRpt

message. The inclusion of these objects in the PCRpt message is proprietary to

Nokia.

The following features are not supported on the 7705 SAR:

• PCE discovery using IS-IS, per RFC 5089, and OSPF, per RFC 5088, along with

corresponding extensions for discovering stateful PCE, per draft-sivabalan-pce-

disco-stateful

• security of the PCEP session using MD5 or TLS between PCEP peers

• PCEP synchronization optimization as per draft-ietf-pce-stateful-sync-

optimizations

PCEP-ERROR Object N/A PCErr

LOAD-BALANCING Object N/A PCReq

CLOSE Object N/A CLOSE

Table 32 Base PCEP TLVs, Objects, and Messages (Continued)

TLV, Object, or Message Contained in

Object

Contained in Message

Other manuals for Nokia 7705