![]() TLVs are used to add extra information to IS-IS Theĭifference is that TLVs exist inside IS-IS packets, while sub-TLVsĮxist inside TLVs. They use the same concepts as regular TLVs. This document introduces a new way to encode routing information in "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in thisĭocument are to be interpreted as described in RFC 2119. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", Mechanisms and procedures to migrate to the new TLVs are notĪ prior version of this document was published as with The router ID is useful for traffic engineering purposes because itĭescribes a single address that can always be used to reference a Increasing the dynamic range of the IS-IS metric and improving the The characteristics described in this document are neededįor traffic engineering. Information about the characteristics of a particular link to an IS. IS Neighbor TLV and IP Reachability TLV, and to include additional This document contains the design of new TLVs to replace the existing TLVs, and are a good way of encoding information in a flexible and Is composed of a fixed header and a number of tuples, each consisting State Protocol Data Units (LSPs) with routing information. Intermediate System (IS) (router) advertises one or more IS-IS Link The IS-IS protocol is specified in ISO 10589, withĮxtensions for supporting IPv4 specified in. Sub-TLVs for the Extended IP Reachability TLV. Sub-TLVs for the Extended IS Reachability TLV. Expandability of the Extended IP Reachability TLV Sub-TLV 18: Traffic Engineering Default Metric. Sub-TLV 10: Maximum Reservable Link Bandwidth. Sub-TLV 3: Administrative Group (color, resource class). RFC 5305 IS-IS Extensions for Traffic Engineering October 2008ġ. This information describesĪdditional details regarding the state of the network that are useful Information that an Intermediate System (router) can place in Link This document extends the IS-IS protocol by specifying new Intermediate System (IS-IS) protocol to support Traffic Engineering This document describes extensions to the Intermediate System to Official Protocol Standards" (STD 1) for the standardization stateĪnd status of this protocol. Please refer to the current edition of the "Internet Internet community, and requests discussion and suggestions for ![]() This document specifies an Internet standards track protocol for the Request for Comments: 5305 Redback Networks, Inc. Updated by: 5307, 8918 Network Working Group T. Similarly, if the secondary pressure increases, the coil spring will contract, closing the main valve, preventing the secondary pressure from increasing, and maintaining a stable pressure.ĬOSPECT reacts to changes of both primary and secondary pressures to maintain the secondary pressure at the desired level.RFC 5305: IS-IS Extensions for Traffic Engineering A drop in pressure results in the coil spring expanding, opening the pilot valve wider, allowing the primary pressure steam to act on the piston which in turn opens the main valve and allows steam to flow through. The pilot valve is held by this large coil spring, which reacts to the secondary pressure as the diaphragm applies pressure on the spring. It's designed to deliver dry steam at stable pressure, and it uses a variety of components to achieve this.īefore using the valve, the desired secondary pressure must be set by compressing the upper coil spring. ![]() Ever wondered how our COSPECT pressure reducing valve works?
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