UniConfig 4.2.7



  • Implementation of transaction-tracker (transaction-log): tracking of successfully committed data.

  • Implementation of revert-changes RPC: reverting transaction that is stored in transaction-log and identified by unique UUID.

  • Introduction of UniConfig transactions - dedicated/shared transactions concept: multiple users can use UniConfig safely from isolated transactions. UniConfig RPCs are part of UniConfig transactions - information about transaction-id is passed from the RESTCONF layer into the UniConfig layer.

  • Introduction of install-node, uninstall-node, mount-node, and unmount-node RPCs - a new way to install nodes into UniConfig with split concepts of installation and mounting. Mounting is always done on demand and the mountpoint is alive as long as some transaction is using this mountpoint.

  • Making UniConfig instance stateless - data is separated from UniConfig (PostgreSQL database) and UniConfig doesn’t keep persistent connection to devices. Data and connection recovery is not done by UniConfig instances anymore (coordination, monitoring, and recovery process is not orchestrated by UniConfig). From the view of data-tree, UniConfig is used only as a cache layer on top of PostgreSQL database and caching is done only in the scope of transaction.

  • Using commit RPC for committing snapshots and templates.

  • Using distributed advisory locks provided by PostgreSQL for locking of UniConfig nodes during commit/checked-commit operation. If another transaction perfors commit at the same time, it will fail before execution of the second commit.

  • Validation of conflicts between different transactions: added data-tree and config fingerprint validation before commit / checked-commit RPC invocation.

  • Integration of fingerprint validation to templates - writing of fingerprint of modified templates to database and verification of fingerprint before commit.

  • Added UniConfig transaction-id as fingerprint for devices not supporting it.

  • UniConfig shell prototype: SSH server, RPC operations, simple read operation.

  • Implementation of get-installed-nodes RPC: used for listing installed UniConfig nodes.


  • Removed unused Karaf features.

  • Handling reordering of list entries in the calculate-diff - instead of sending delete+replace operations to the southbound layer.

  • Improving the existing algorithm that collapses diff from honeycomb (parallel streams).

  • Improved error messages during application of template.

  • Improved error messages - using serialized form of YangInstanceIdentifier in logs or error messages, if possible.

  • Removed data-tree cache layers on CLI and NETCONF layers - UniConfig directly writes data to CLI/NETCONF mountpoints - it simplifies syncing process too.

  • Adjusted persistence of mount information - node with the same ID may be present in both CLI/NETCONF topologies - and node only from one topology at the same time can be used for installation on UniConfig layer (configuration is synced and parsed).

  • Changed native-CLI architecture - UniConfig calls native-CLI readers/writers directly using BI API - BA translation layer provided by Honeycomb is redundant.

  • Removed snapshot limit - it is not used anymore since snapshots are stored in the database and this database should manage its storage limits.


  • Fixed rollback operation after commit/checked-commit.

  • Fixed sync-from-network for unavailable nodes - Comparison of config fingerprints failed for nodes that are unavailable because reading of fingerprint failed.

  • Fixed version-drop in copy RPC.

  • Fixed writing ordered-map nodes during string substitution process (application of template).

  • Fixed commit output: if the configuration of one of the nodes fails at any phase, then the outputs for all nodes will always contain a rollback flag.

  • Fixed losing of some tags in DOM nodes (application of template)

  • Fixed dry-run commit - Dry-run commit should trash journal of nodes that haven’t been ‘touched’.

  • Fixed calculate-diff - Removing the whole list node with all list entries.

  • Fixed transfering of template tag from template to uniconfig topology at apply-template RPC (it should not happen).

  • Mark sync operation failed on empty config.

  • Fixed reading of uniconfig-native flag - unboxing of null Boolean to boolean.

  • Fixed creation/removal of dry-run Unified mountpoint - synchronization problems.



  • Integration of UniConfig transaction manager with database and datastore transactions - used for management of shared/dedicated transactions.

  • Integration of JSONB filtering of configuration on the level of DAOs.

  • Persistence of snapshots in PostgreSQL.

  • Persistence of logging configuration in PostgreSQL.

  • Persistence of templates in PostgreSQL.

  • Persistence of transaction-log in PostgreSQL.

  • Separated persistence of UniConfig nodes and representing mountpoints.

  • Validation and locking of templates and UniConfig nodes on the level of UniConfig transaction.

  • Stop submitting datastore transactions - it must be closed - datastore is used only as cache.

  • Introduction of embedded PostgreSQL for testing purposes - it can be enabled from the UniConfig configuration file.

  • Integration of Flyway library to Uniconfig: easier upgrading of database schema and migration of data.

  • Implemented standalone DOM broker - stopping to use clustered/distributed DOM brokers.

  • Extending RPC service by custom parameters that can be passed from RPC caller to RPC implementation.

  • Exposed simple container merge utility.

  • Allow users to specify attributes without module-name (template tags).

  • Allow positional information in YangInstanceIdentifier (useful for operations under ordered lists).


  • Fixed order in which database writers are called (adding priority to DatabaseWriter API).

  • Fixed creation of DocumentedException from XML (document may include redundant namespaces).

  • Fixed leaked DB connection on health-check operation.

  • Making the database layer more thread safe (using ‘SELECT FOR UPDATE’ in some queries).

  • Fixed race-conditions in 3-phase datastore commit.

  • Fixed searching for fallback context on nodes that were not mounted (uniconfig-native).

  • Added synchronization when generating BA->BI codecs.

  • Fixed storing of the default schema repository into PostgreSQL.

  • Fixed disappeared tag from template data-tree.

  • Fixed data-tree modifications: merge->put->delete operation chain.

  • Added workaround for ‘metadata not available’ data-tree bug.


  • Removed unused Karaf features.

  • Ensuring parents by merge: avoiding ridiculous errors when data-tree allows to write data to nodes which parent is missing.

  • Generalisation of NETCONF repository into YANG repository.

  • Replaced asynchronous DB API by synchronous DB API - JDBC connections are synchronous.

  • Breaking PUT modifications to specific modifications in the data-tree: improving ‘optimistic lock’ granularity.

  • Removed unnecessary dependencies of xtend maven plugin.

  • Optimized creation of uniconfig-native schemas.

  • Preserving order of list/leaf-leaf elements in the data-tree.



  • Fixed bug caused by swagger-uniconfig-go.


  • Make openAPI generated for uniconfig more useful.

  • Added Unified layer models to swagger dependencies.

Translation units framework


  • Added native-CLI binding-independent API.


  • Removed unused artifacts.

  • Optimized chunk cache - do not store entire writer in chunk cache, so GC can take care of writers as soon as possible.

  • Detection of complex reordering of list entries in diff output.


  • Fixed commit rollback failing: the bug was caused by an attempt to execute an inverse command of an unsuccessful command.



  • Removed unused Karaf features.

  • Exposed binding-independent data support to native-CLI API.

  • Exposed services for direct device access to MP.


  • Replace maxConnectionAttempts with maxReconnectionAttempts when reconnecting to the device after the first connection attempt is successful.

  • Replaced transactionChain (not working correctly) with direct dataBroker transactions.

  • Fixed device type checking - when a device was mounted with the wrong type, the generic symbol (“*”) was implicitly used as the type. The device was installed on all layers, but uniconfig/configuration was empty. Now we have to use correct device type or *.

  • Fixed disabled CLI journaling (default value).



  • Added maxReconnectionAttempts functionality into NETCONF client.


  • Removed unused Karaf features.

  • Improved error message from parsing of NETCONF RPC response.

  • Removed akka actor dependency from NetconfCacheLoader.

  • Enable md-sal persistence accross sessions in NETCONF testtool.


  • Fixed writing of netconf namespace prefix (‘Namespace urn:ietf:params:xml:ns:netconf:base:1.0 was not bound, please fix the caller’).

  • Fixed reading of the whole list/leaf-list from the device - it was reading the whole parent structure, not only the dedicated list.

  • Moving state to unable-to-connect after failed schema context building from device YANGs.

  • Switched order in which mountpoint and OPER data is created - mountpoint should be created before OPER data with connected

status is written to datastore, because mount-node RPC relies on OPER information only.

  • Fixed deadlock that may occur on removal of Unified MP.



  • Added support for RESTCONF PATCH method that includes tags.

  • Integration of UniConfig dedicated/shared transaction to RESTCONF - cookie with transaction-id property, create-transaction RPC, and close-transaction RPC.

  • Introduction of jsonb-filter query parameter used for filtering of data committed to database.


  • Removed unused Karaf features.

  • Using RFC8040 format for errors thrown from the transaction system.


  • Fixed RESTCONF response/request logging.

  • Fixed reading of all available RPC operations.

  • Fixed NPE that is caused by Subject.getPrincipal() - extraction of authentication data from AAA.

  • Fixed serialization of ordered leaf list with attributes.

  • Fixed connection leak - read-only transaction was not always closed.

  • Fixed parsing of elements without module name: If there are some conflicts between children elements - multiple elements with the same name but in different modules exist - then we should return a proper error message.

  • Fixed use of fields query parameters with uniconfig-native nodes.

NETCONF translation units


  • Removed unused Karaf features.


  • Fixed writer dependency in XR623 ISIS translation unit.

  • Ignored ‘ios-xr lacp period 200’ command - only ‘lacp period short’ is supported.

CLI translation units


  • IOS XE: created a distinct module for IOS-XE in cli-units.

  • IOS XE: added ios-xe 15 and 17 to ios-xe module.

  • IOS XE: translation units - SNMP, LACP, privilege command, interfaces, l2protocol, evc, route-map, bgp and network-instance modules, vrf definition, fhrp version, ip commands, neighbor, ethernet cfm mip, negotiation auto.

  • IOS XE: additions - media-type command, port-security commands, BDI type recognition, ethernet cfm mip command, cft commands, commands for bgp, prefix-list command, fhrp delay, bfd-template, split-horizon group in bridge-domain, added fallOverMode for vrf neighbor, IPv6 prefix-lists with prefix lengths, routing-policy, ipv6 vrrp, added synchronization and moved default-information in BGP, table-map, ip community-list command, redistribute command, bgp and interface commands, ipv6 commands, rewrite command, snmp trap, support for multiple l2protocols,.

  • SAOS6: translation units: Ingress ACL.

  • SASO6: additions - commands for delete untagged attributes, unset description command, parsing ranges in ring protection.

  • SONiC: created init and interfaces unit.

  • Huawei: translation units - interfaces.

  • Huawei: additions - global config reader and writer for bgp, neighbor config reader and writer, new augmentation fields for global and neighbor configurations.


  • Removed unused Karaf features.

  • Movef service-policy from IOS/interface to IOS/QoS.

  • IOS XE: make sure all ‘GigabitEthernet’ interfaces are treated as physical, don’t send unnecessary commands in interface unit, only send storm-control commands when needed, moved service instances and encapsulation in service instance in ios-xe/interface, edit readers and writers for bridge-domain, edited LLDP to not parse when default is set, speed up mounting

  • SAOS6: use the same template for service as for profile schedulers.

  • SAOS6/8: added quotes into description.


  • IOS XE: fixed writing interface config, fixed unwanted lldp/cdp/switchport vlan commands commands, fixed IPv6 config writer template, fixed mounting of IOS XE (configuration metadata), fixed bridge-domain regex, fixed reading VLANs, fixed storm-control regex, fixed NPE in GlobalAfiSafiConfigWriter, fixed BgpAfiSafiChecks, fixed CommunityListConfigReader and L3VrfReader, fixed IndexOutOfBoundsException in BgpActionsConfigReader.

  • IOS-XR: delete methods should always be readBefore, fixed calling get on a null value, fixed delete of mpls-te.

  • SAOS6: fixed virtual-circuit ethernet delete, fixed reading Virtual Ring data, fixed reading the range of vlans in virtual ring commands, reading default interface.


  • removed unused Karaf features from openconfig

  • fixed Openconfig bug with nested augmentations (fixed resolving augmentations path)

  • frinx-cisco-if-extension: added negotiation auto, added support for multiple l2protocols, added support for rewert commands, vrf forwarding, ip commands, fixed L2protocol description, split-horizon group in bridge-domain, chaed bridge-domain type to string, fhrp delay, fixed bad order of augmentation in frinx-cisco-if-extension.yang, bridge-domain, added grouping for L2protocol for Service instance, added grouping for L2protocol for Service instance, move encapsulation in service instance, move service instances, created augmentation for service instances, cft cisco specific commands, added port-security,

  • frinx-bgp-extension: added bgp extension for Huawei device, local-as-group, route-maps in redistribute commands, BGP neighbor, table-map in BGP, synchronization and moved default-information in BGP, added bgp fall-over mode, neighbor <ip-add> as-override, default-information originate,

  • frinx-cisco-ipvsix-extension: added yang extension for global ipv6 commands.

  • frinx-openconfig-bgp-types: extracted typedefs for community union type.

  • frinx-cisco-vrrp-extension: added ipv6 vrrp augmentation, added vrrp-group augmentation,

  • frinx-openconfig-bgp-policy-extension: added community-list type,

  • frinx-cisco-routing-policy-extension: prefix lengths in prefix-list, sequence-id, forwarding-action, route-map

  • frinx-openconfig-fhrp: fhrp version

  • frinx-bfd-extension: bfd-template-config

  • frinx-oam: added ethernet cfm mip

  • frinx-openconfig-lacp: added ON lacp mode

  • frinx-qos-extension: moved service-policy from IOS/interface to IOS/QoS

  • frinx-snmp: added snmp-view config

  • created frinx-openconfig-evc module

  • created frinx-privilege module