TED update 22: updated TE-Link cross-connect configuration

Updated #TE-Link #cross-connect configuration in #TED module. The new update indicates whether the #direction of cross-connect in #uni-directional cases. i.e It indicates the direction as #ingress / #egress corresponding to the #order of from-to #port #tuple specified in the cross-connect. This enables to specify either the #incoming / #outgoing port as the #first in the from-to tuple. This will be #relevant when conveying this information through the #signaling modules, as the operator may specifically want to specify the order of ports in from-to tuple. In addition to it is also possible to indicate the cross-connect as uni-directional/bi-directional. The above property is specifically used when the cross-connect is in #simplex mode.

#TED update 22 ...
[commit 64ac777acc8e75c0c8ad2e129d02bd16295f7de7] (https://github.com/nes-repo/NES-Open-Switch/commit/64ac777acc8e75c0c8ad2e129d02bd16295f7de7)

TED update - 21: optimizing standard TE-Link component link entries

Optimized the variables used in TE-Link #component-link entries and #component-link #bandwidth entries in TED module. The #variable #size used for storing the #bandwidth information has been reduced - in the #component-link entry the #max-reservable-bandwidth keeps maximum available bandwidth on the component-link, also the component-link bandwidth entries keep 8 separate entries on each component-link to keep the current #unreserved-bandwidth available for each of the 8 #priority values on the component-link. The #max-reservable-bandwidth is a configurable parameter by the operator, but the #unreserved-bandwidth is dynamic value currently set on the component-link.

#TED update 21 ...
[commit 39d7d5a691043d8a624faa35a69770e0dd3fc37c] (https://github.com/nes-repo/NES-Open-Switch/commit/39d7d5a691043d8a624faa35a69770e0dd3fc37c)

TED update - 20: adding new TE-Link switching-capability index

Added new #indexing on the #TE-Link #based on the #switching-type and #lsp-encoding-type in the TED module. This will enable to #look-up TE-Link based on the #switching-capability-descriptors available on the link. This will be useful when computing #path for #LSPs of specific #switching-type and #encoding-type. The switching-capability-descriptor of a TE-Link is #derived from it's underlying #component #links. This enables to create #TE-Links #over higher capacity #server-layers e.g. #Ethernet capable TE-Links created over #SDH / #OTN server-layers.

#TED update 20 ...
[commit 4719c883875c413d03d3f37ec04933399fd52ff4] (https://github.com/nes-repo/NES-Open-Switch/commit/4719c883875c413d03d3f37ec04933399fd52ff4)

TED update - 19: adding new TE-Link reservation priority based index

Added #new #priority #based #indexing on the #TE-Link #reservations in the TED module. This will enable to #query TE-Link reservations #based on their #priority. This will be useful when #preemptable #bandwidth has to be calculated from the existing reservations on a TE-Link. When preemption is enabled and #unreserved #bandwidth is not being available, some of the existing #lower #priority reservations will be released and used to fulfill the current requirement.

#TED update 19 ...
[commit f24555b15e06dc91475482fcb6e58debc0680760] (https://github.com/nes-repo/NES-Open-Switch/commit/f24555b15e06dc91475482fcb6e58debc0680760)

TED update - 18: adding new TE-Link address based index

Added #new #address #based #indexing on the #TE-Link in the TED module. This will enable to #query TE-Links #based on their configured #address (i.e. #IPv4, #IPv6 or #un-numbered). This will be useful in many parts of the system as external to the stack the TE-Links are always identified by their assigned address. Support has been added for #multi-address scenario on the same TE-Link.

#TED update 18 ...
[commit 2e79a9a1f93b939b9f8db2313a2325985beb15ad] (https://github.com/nes-repo/NES-Open-Switch/commit/2e79a9a1f93b939b9f8db2313a2325985beb15ad)

TED update - 17: adding new TE-Link parameters

Added #new #parameters on the #TE-Link in the TED module. The new #attribute #indicates whether the #TE-Link #crosses an #autonomous-system or an #area - i.e. AS / Area #border #link. An #admin-flag parameter has been added to the TE-Link to mark this information. Also the existing #te-adjacency-enable and #te-distribution-scope parameters has been added as #admin-flags to compact the parameters. When computing a path which crosses AS / Area boundaries these changes helps to specifically search and find border links in the network. This helps in faster and efficient path computation.

#TED update 17 ...
[commit 04e98690cba9a4a2a7a0d70870f913f5c3803006] (https://github.com/nes-repo/NES-Open-Switch/commit/04e98690cba9a4a2a7a0d70870f913f5c3803006)

TED update - 16: adding extended addressing parameters in TE-Link address entries

Added #extended #addressing #parameters with #link-address entries in TED module. The address information has been extended by including the #address #prefix length and the #un-numbered address support. The address #prefix allows to represent #ranges of #address in link-address entries. The #address-prefix holds the #prefix #length of the specified address in the entries. The #un-numbered addresses are represented by #address-unnum parameter. Along with the un-numbered address the #parent #IPv4 #address is also included in the entries. The new parameters allows to represent wide range of address in a compact way and variety of address types are added in the link-address entries.

#TED update 16 ...
[commit 555863ef0a1f24731846ba9340de72b4b458a223] (https://github.com/nes-repo/NES-Open-Switch/commit/555863ef0a1f24731846ba9340de72b4b458a223)

TED update - 15: adding new parameters in custom TE-Node entries

#Added new parameters in #custom #TE-Node entries in the TED module. This include the #node-type for indicating the type of the node as #node, #area or the #autonomous-system, the #node-area which identify the area of the local node in a #multi-area #network, the #node-xc-type to indicate that the node has only a #fixed #cross-connect and can not be #reconfigured, and the #node-label-distribution-enable which identify whether or not to #signal the #label related node #capabilities to other nodes. The area and autonomous-system level #summarization #nodes uses the #node-type to indicate the summarization level. The nodes which has a #fixed #connectivity #matrix will limits the way in which the #input port can be connected to the #output #ports. For these kind of nodes the #node-xc-type is set as fixed. Also it is possible to convey the node level #label #constraints to the neighboring nodes to assist in better #path #computation operation. On setting the #node-label-distribution-enable flag the node passes the label constraints to the respective signaling modules.

#TED update 15 ...
[commit f88b1d646a40f4a0711c2b634adfb2b98db129af] (https://github.com/nes-repo/NES-Open-Switch/commit/f88b1d646a40f4a0711c2b634adfb2b98db129af)

TED update - 14: adding standard TE-Node ASN/ICC based look-up methods

#Added #standard #TE-Node #ASN / #ICC address based #look-up methods in the TED module. This enables to access the #TE-Nodes in the network based on the #ASN based addressing or the #ITU-T based #ICC #addressing scheme. The #ASN based address scheme involves an #autonomous-system-number ( #ASN ) and the #node-id. This is also referred as the #IP-compatible addressing scheme. In the #ICC addressing scheme the TE-Nodes are addressed by #country-code ( #CC ), #itu-t-carrier-code ( #ICC ) and the #node-id. The new look-up mechanism uses #independent ASN address and ICC #address #mapping methods. This enables to access the TE-Nodes in either of the addressing schemes.

#TED update 14 ...
[commit a121959c8705a690980f36a3d73c5a534c7fa77f] (https://github.com/nes-repo/NES-Open-Switch/commit/a121959c8705a690980f36a3d73c5a534c7fa77f)

TED update - 13: optimizing TE-Link link-reservation entries

#Optimized #TE-Link #link-reservation entries in TED module. The #reservation #priority has been added to the link-reservation entries, so that #preemption feature can be optimally implemented for #path #computation procedures. The #link-reservation #index has been made #compact by removing the 4 integer indexes and #replaced them with a #generic 16 byte #wide #index. This helps to keep traffic-engineering module to be less specific to the MPLS framework, as the generic index can be used from other modules as well. Also this makes link-reservation database more easily usable. The #preemption is used for #high #priority #path #setup #requests in the #traffic-engineering module. Preemption is used when #resource #crunch is experienced on a TE-Link for these requests. The #previously placed #low #priority resource #reservations will reused for performing current high priority request. The existing low priority reservations of will be either #teared #down or #moved to a different TE-Link. The bandwidth that got available from handling the low priority reservations will be used for current high priority path setup request.

#TED update 13 ...
[commit dcc8fa6c7a1eeddf3954da8671719bdb4ed62d25] (https://github.com/nes-repo/NES-Open-Switch/commit/dcc8fa6c7a1eeddf3954da8671719bdb4ed62d25)

TED update - 12: optimizing TE-Link switching-capability (ISCD) entries and adjustment-capability (IACD) entries

#Optimized #TE-Link #switching-capability ( #ISCD ) entries and #adjustment-capability ( #IACD ) entries in TED module. The TE-Link switching-capability and adjustment-capability #configuration entries has been made #compact #by making the #bandwidth to #64-bit #fixed size #format. The generic variable size format for these parameters takes quite some memory space. The #switching-capability and #adjustment-capability #configuration for TE-Link #component-links also has been #compacted in the same way. The #switching-capability configuration has #max-lsp-bandwidth for each of the 8 #priority values and fixing them to 64-bit will get ride of the 8 size fields of these parameters reducing the memory size. The #max-lsp-bandwidth is kept in #64-bit #floating-point #format which is always exist as a fixed format. The #adjustment-capability configuration as well has 8 #max-lsp-bandwidth fields for each #priority values, this too has been optimized in the same way.

#TED update 12 ...
[commit 31ff9d5adba547ada03c7c10996ae817f3ff97c1] (https://github.com/nes-repo/NES-Open-Switch/commit/31ff9d5adba547ada03c7c10996ae817f3ff97c1)

TED update - 11: renaming standard TE-Link switching-capability (ISCD) entries

#Renamed #standard #TE-Link #switching-capability ( #ISCD ) entries in TED module. The TE-Link switching-capability configuration entries has been made straight forward by correcting it's name. The TE-Link switching-capability entries contain #attributes like #min-lsp-bandwidth, #max-lsp-bandwidth for each #priority, #interface #MTU, SONET / SDH type, etc ... The switching-capability entries are identified by their #switching-type and #LSP-encoding types. The same information has been updated for the counter parts from the #component-links as well.

#TED update 11 ...
[commit 51fd4675bdbdfe0983f6bb82406b5a7d00e6c150] (https://github.com/nes-repo/NES-Open-Switch/commit/51fd4675bdbdfe0983f6bb82406b5a7d00e6c150)

TED update - 10: adding local and remote IP address based index for TE-Link

#Added #local and #remote #IP #address based #index for #TE-Link in TED module. This will enable to #access the #TE-Link entry based on it's #local-ip-addr and #remote-ip-addr #indexes. This will help to look-up TE-Link entries from the address information. The IP #address on the TE-Link can assume #IPv4, #IPv6 or #un-numbered address #types. The #local #address part of the TE-Link is an #operator #configuration and #remote address part is #dynamically updated as part of the #signaling. The remote address can also be statically updated by the operator in certain scenarios. This helps to efficiently map the TE-Link entries from the address index.

#TED update 10 ...
[commit 2074c5f523fd2e8f47a30021c8af1e9f9216f230] (https://github.com/nes-repo/NES-Open-Switch/commit/2074c5f523fd2e8f47a30021c8af1e9f9216f230)

TED update - 9: renaming TE-Link un-numbered identifiers

#Renamed #standard #TE-Link #un-numbered #identifiers entries in TED module. The TE-Link configuration entries has been made straight forward by correcting un-numbered identifier names. The TE-Link entries contain #attributes like #local-id, #remote-id will hold the local and remote #un-numbered #identifiers on the link. The attributes #local-ip-addr, #remote-ip-addr will contain the #IPv4 address of the #parent #numbered #interfaces and the #address-type will indicate as #unknown to identify the un-numbered identifiers type. The un-numbered identifiers is also updated in the #link-address database for efficient TE-Link look-up.

#TED update 9 ...
[commit e372b29c1848aaba6524e9f2cde75671b88137c4] (https://github.com/nes-repo/NES-Open-Switch/commit/e372b29c1848aaba6524e9f2cde75671b88137c4)

TED update - 8: adding TE-Link reservation database

#Added #TE-Link #reservation parameters agent routines in TED module. On #LSP #reservation on the TE-Link an entry is made to keep #track of the #reservation just made. These entries hold the #bandwidth information related to each LSP reservation. On creating a #in-segment over a #mpls-interface, a reservation is done over the respective TE-Link and #link-reservation entry is created. On events like #protection #switching or an #LSP #tear #down the respective link-reservation entries will be appropriately handled. This stands as a #database of all the #reservations done in the system for various services LSPs. This allows to avoid complex cases as #double #reservations, where #backup or #detour #paths are involved. The #bandwidth consumed by each reservation is marked in the #link-reservation entries and when #make-before-break ( #MBB ) use-cases are involved it helps to get current #reservation and make #changes accordingly.

#TED update 8 ...
[commit 9bea6e0c39a5d80ccab1a8244a677f65955a1ee8] (https://github.com/nes-repo/NES-Open-Switch/commit/9bea6e0c39a5d80ccab1a8244a677f65955a1ee8)

TED update - 7: adding inter TE-Link cross-connect parameters

Added new node level inter #TE-Link #cross-connect information in TED module. This enables to draw the #possible #cross-connect #constraint present between TE-Links of a node. When this configuration is present in a node, that will be the only possible cross-connects between the specified links. But on the absence of this configuration in a node, links can be inter-connected in any possible combination - i.e. no constraint exist for cross-connect between links. When the #cross-connect is between TE-Links of #different #media #types, a possible #media #conversion has to be performed as per the #adjustment-capability information configured. Hence the TE-Links involved in a cross-connect may be part of same media layer or different media layers. On nodes with #hardware #constraint on link cross-connect this information will be useful in expressing the limitation. This could be used to #compute #path for #tunnel #LSPs in complex networks.

#TED update 7 ...
[commit 9f54195ad7587eb0e6abc23f23426f1a0f7a4160] (https://github.com/nes-repo/NES-Open-Switch/commit/9f54195ad7587eb0e6abc23f23426f1a0f7a4160)

TED update - 6: renaming standard TE node entries

Renamed #standard #TE-node entries in TED module. The TE-node configuration entries has been made straight forward by correcting it's name. The TE-node entries contain #attributes like #node-id, #autonomous-system-number ( #ASN ), #country-code ( #CC ), #itu-t-carrier-code ( #ICC ) and a local node index for unique reference. This enables to refer the nodes in the network using either using the ASN or the ITU-T based ICC addressing scheme. This also serves as a #database of all #known #nodes in the system. When new nodes gets discovered by the TE signaling modules (e.g. OSPF-TE, ISIS-TE) a dedicated entry will be created for each node, so that it can be referenced in remaining parts of the system (e.g. endpoints of TE-Link). The TE-nodes will be referenced as source, destination or the intermediate nodes of an tunnel LSP path.

#TED update 6 ...
[commit dad1472900d98945f8807cd3103518fd8a4e3463] (https://github.com/nes-repo/NES-Open-Switch/commit/dad1472900d98945f8807cd3103518fd8a4e3463)

TED update - 5: adding TE-Link adjustment capability parameters

Added new #adjustment-capability ( #IACD ) information both #on #TE-Link and the individual #component-link level s in TED module. The adjustment-capability enables to capture the #capability and #capacity of each node to #perform #media #conversion #between it's #TE-Links ( #Ethernet-to-SDH, #Ethernet-to-OTN, #OTN-to-WDM, etc ... ). The adjustment-capability indicated as the #higher and #lower #layer #switching-type and #LSP-encoding #of a possible #media #conversion and #bandwidth capacity is indicated per #priority. When a node has different types of - media - TE-Links and it is possible to forward data-stream between these links the internal capacity of the node to perform this conversion is indicated as adjustment-capability.

#TED update 5 ...
[commit 7e2c2086756a59df15b2f5303b205e3da3cafce6] (https://github.com/nes-repo/NES-Open-Switch/commit/7e2c2086756a59df15b2f5303b205e3da3cafce6)

TED update - 4: adding extended TED parameter framework

Added #extended #custom #TED #parameter s in TED module. The new TED #framework include #node, #link, #link-address and #node-adjacency #databases on the network. The node database include s all TE nodes present in the network. The TE-Links configured on each node is captured in the link database, the addresses by which the links are identified is available in the link-address database. The adjacency information between the nodes and their neighbors are available in node-adjacency database. The #locally #configured #TE-Link information is directly fed to the TED database, also the #TE information #available #from the #external #signaling modules (e.g. #OSPF-TE, #ISIS-TE) is also captured in the TED database. The TED database is used to efficiently #compute #path for #tunnel #LSPs.

#TED update 4 ...
[commit 77ac9c70e846cd31b39d39b67b4b749e437fde8e] (https://github.com/nes-repo/NES-Open-Switch/commit/77ac9c70e846cd31b39d39b67b4b749e437fde8e)

GMPLS update - 16: removing link switching-capability descriptor from GMPLS Call framework

#Remove d #link #switching-capability #descriptor ( #ISCD ) from GMPLS #Call #framework from GMPLS module. The switching-capability descriptor has been removed as the #same #functionality is already available #from the corresponding #TE-Link #switching-capability #descriptor in #TED module. The removed data-structures indicates the switching-capability information of the remote TE-Links conveyed through the Call signaling mechanism. The same information will be populated in the TED module on signaling and used in place, so as to reduce the memory requirement.

#GMPLS update 16 ...
[commit 135474902d50d657f4fa5a6f558ac60e14e93ba2] (https://github.com/nes-repo/NES-Open-Switch/commit/135474902d50d657f4fa5a6f558ac60e14e93ba2)