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)

GMPLS update - 82: adding new parameters in custom computed-path configuration

Adding new #attributes in custom #computed-path configuration GMPLS module. The new attributes #node-id and #link-id adds support for specifying the #path #segment with respect to the #TE-Node and #TE-Link. This helps in describing the tunnel path using the nodes and links along the way. The #address information of the individual links are #automatically #populated based on the specified node-id and link-id configuration. This adds support for specifying the tunnel computed-path without knowing the address information, but using only the links on the way.

#GMPLS update 82 ...
[commit bd3f992063bcfb377c765dd1f0626fafb9d99910] (https://github.com/nes-repo/NES-Open-Switch/commit/bd3f992063bcfb377c765dd1f0626fafb9d99910)

GMPLS update - 76: adding new parameters in custom actual-path configuration

Adding new #attributes in custom #actual-path configuration GMPLS module. The new attributes #node-id and #link-id adds support for specifying the #path #segment with respect to the #TE-Node and #TE-Link. This helps in describing the tunnel path using the nodes and links along the way. The #address information of the individual links are #automatically #populated based on the specified node-id and link-id configuration. This adds support for specifying the tunnel actual-path without knowing the address information, but using only the links on the way.

#GMPLS update 76 ...
[commit 92d0937aef9875c5c567a439870f698f91555c63] (https://github.com/nes-repo/NES-Open-Switch/commit/92d0937aef9875c5c567a439870f698f91555c63)

GMPLS update - 74: adding new parameters in custom explicit-path configuration

Adding #new #attributes in custom #explicit-path configuration GMPLS module. The new attributes #node-id and #link-id adds support for specifying the #path #segment with respect to the #TE-Node and #TE-Link. This helps in describing the tunnel path using the nodes and links along the way. The #address information of the individual links are #automatically #populated based on the specified node-id and link-id configuration. This adds support for specifying the tunnel explicit-path without knowing the address information, but using only the links on the way.

#GMPLS update 74 ...
[commit 37d335c7865164d7d1a7b2d968e91a301d48866d] (https://github.com/nes-repo/NES-Open-Switch/commit/37d335c7865164d7d1a7b2d968e91a301d48866d)

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 - 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 - 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)

IF update - 14: updating logical interface stacking handler

Updated the #logical-interface #stack #handling routines in IF module. The #stacking #change #handler routines has been #upgraded for the new data-structure changes. The interface stacking change handler will #check with the #upper and #lower #interface #layer s #on #create / #remove operations for each stack slice. e.g. On adding a #TE-Link over an #ethernet port the port capability (L2/L3/MPLS, bandwidth, MTU, duplexity, etc ...) and it's current state (OPER-STATUS) is checked. On creating the TE-Link TE-Link bandwidth is deduced from the lower layer ethernet port speed/bandwidth. On removing an GMPLS / #MPLS-tunnel, the earlier reserved bandwidth is returned back to it's lower layer #MPLS-interface and #TE-Link. These operations are supported through the interface stack change handler.

#IF update 14 ...
[commit 57a5237d1912bcff8c85f1e3d4448c52311a44f1] (https://github.com/nes-repo/NES-Open-Switch/commit/57a5237d1912bcff8c85f1e3d4448c52311a44f1)

TED update - 3: adding TE-Link logical port update

Added stubs for logical #interface #status and #stacking handling in TED module. This control the operations of logical interfaces of type #TE-Link. Status handler will control the operations on an interface status change as in OPER UP/DOWN/TESTING etc ... On stacking of a higher layer entity similar operations are performed by stacking handler.

#TED update 3 ...
[commit 355d236ec37edfb2139a2483887777441c415c3e] (https://github.com/nes-repo/NES-Open-Switch/commit/355d236ec37edfb2139a2483887777441c415c3e)