Changes in Release 1.3

New Functionality in Release 1.3.3

Release 1.3.3 is a bug fix release. New functionality will be added in release 1.4.0

New Functionality in Release 1.3.2

• Mikrotik RouterOS version 7 support by Stefano Sasso, including IPv4, IPv6, VLANs, VRFs, OSPFv2, OSPFv3, BGP, MPLS, MPLS/VPN, and libvirt box building recipe

• Nokia SR OS support for VLAN, VXLAN, EVPN, VRF, and OSPFv3 by Jeroen van Bemmel

• OSPFv3 on Cumulus Linux and Nexus OS

• EVPN (bridging and symmetric IRB) on Nexus OS

• EVPN VLAN bundle service on SR Linux

• EVPN transit VNI shared between VRFs

• Define VLAN and VRF parameters in groups

• Disable OSPF, EIGRP, or IS-IS on a link or an interface

• Disable EBGP sessions on a link or an interface

• EVPN over IPv6 LLA sessions on Cumulus Linux and FRR

• BGP local-as on EBGP VRF sessions on Cumulus Linux

• Configurable BGP address families on VyOS and Dell OS10

• Static IPv4/IPv6 address on containerlab management network

New Functionality in Release 1.3.1

• VXLAN, VLANs, VRFs, and EVPN implemented on FRR and Cumulus Linux

• BGP local-as implemented in the BGP configuration module and supported on Arista EOS, Cisco IOS, Dell OS10, FRR, and Nokia SR Linux. BGP local-as can also be used on some platforms to turn an EBGP session into an IBGP session.

• Configurable BGP transport sessions

• Configurable default BGP address families supported on Arista EOS, Cisco IOS, Cumulus Linux, FRR, and Nokia SR Linux.

• FRR support for IPv6 LLA (unnumbered) BGP sessions

• New default container versions: FRR 8.3.1 and Cumulus Linux 4.4.0

• New default VM versions: Cumulus Linux (with NVUE) 5.2.0

• Per-VRF BGP router ID implemented on Cisco IOS and Arista EOS

• Select address pools with ‘pool’ VLAN or link attribute (using ‘role’ attribute to select an addressing pool is deprecated)

• Add ‘message’ attribute to lab topology to display a ‘this is how you use this lab’ help message after the lab is started and configured

• Implement ‘startup configuration’ parameter for containerlab

• Device configuration files can be created from netlab templates and mapped into containers. Currently used to start FRR daemons in FRR 8.3.1 container.

• Add multiple debugging flags to debug just parts of the data transformation code

New Functionality in Release 1.3

• VXLAN configuration module implemented on Arista EOS, Cisco Nexus OS, Dell OS 10, Nokia SR Linux and VyOS

• EVPN configuration module implemented on Arista EOS, Nokia SR Linux, VyOS and Dell OS10.

• MPLS configuration module got 6PE address family implemented on Arista EOS and Cisco IOS/IOS XE.

• IS-IS on VyOS

• VLAN and VRF on Cisco Nexus OS

• VRF support for Nokia SR Linux

• Default route origination on EBGP sessions

• gRPC installation script – install all the dependencies needed to configure Nokia SR Linux with a single command

• Device-specific module requirements (example: VXLAN on Nokia SR Linux works only with EVPN)

• Complete implementation of VLAN interface on Nokia SR Linux

• Configure IPv6 hosts on Cisco IOS and Arista EOS

• Custom interface index on node-to-link attachments

Renaming Python Package and Project Name

We renamed netsim-tools project to netlab. There is no change to the functionality, user interface (CLI commands), or documentation.

The Python package has been renamed to networklab which is a dependency of netsim-tools package. Upgrading netsim-tools will also install or upgrade networklab.

Bug Fixes in Release 1.3.3-post1

• Don’t convert dictionary keys with dots into hierarchical dictionaries when dealing with filenames

• Add eos-downloader info to docs

• Support multiple clab node parameters

• Configure link MTU on Cumulus NVUE (#592)

• Handle empty VLAN/VRF definitions in group node_data

• Change node.runtime to node.clab.runtime, add documentation

Bug Fixes in Release 1.3.3

• Fix VLAN mode precedence to match documentation

• Nokia SR Linux: fix static routes with ipv6 prefixes

• Reduce length of clab bridge-attached interface names

• Multiple fixes to RouterOS version 7 BGP templates

• Fix VXLAN link MTU on SR Linux and FRR

• Nokia SR OS: Implement policy to set next-hop-self for eBGP routes only when acting as RR

• Nokia SR Linux: Don’t configure next-hop-self when acting as RR

• Use static address on Cumulus Linux mgmt interface

• Compare subnets (not networks) when installing Linux static routes

• Rewrite /etc/hosts file in containerlab deployments

• Nokia SR Linux: Fix VXLAN learn-unsolicited for ipv6 case

• Display an error message when failing to load a module

• Nokia SR Linux: Fix ISIS template (broken after VLAN updates)

• Nokia SR OS: Fix OSPF interface structure (#543)

• netlab initial -o should work with subdirectories

Bug Fixes in Release 1.3.2

• Check global- and device-specific module requirements for each node

• Control IPv6 interface state on FRR

• Pull VRFs associated with node VLANs into node data

• ‘netlab libvirt package’ cannot use inactivated vagrant-libvirt network

• Cumulus Linux VM does not recognize all files in /etc/network/interface.d

• Pass multiple CLI parameters to network devices with ‘netlab connect’

• ‘netlab libvirt package’ command works with virt-install 4.0.0 on Ubuntu 22.04

• Remove IGP parameters from a VRF l2-only interface

• Don’t enable LDP on interfaces without an IPv4 address

• Use a route-map to implement IPv4/IPv6 next-hop-self on Arista EOS

• Use only valid IPv4 addresses from non-hosts as LAN default gateway

• Copying VRF-aware node attributes into interface data

• Fix routed native VLAN handling

• FRR: Upgrade to v8.3.1 broke OSPFv3 configuration

• Linux: avoid static routes to interface subnets overlapping address pools

• Normalize IP address pool strings (check pool prefixes for host bits)

Bug Fixes in Release 1.3.1

• Cumulus Linux OSPF template would crash in VRF-only scenarios

• FRR can be used as a host (without a loopback interface)

• Copy VLAN ‘role’, ‘pool’ and ‘unnumbered’ attributes into VLAN member links

• Remove ‘unnumbered’ attribute from the final data model

• When checking device-specific module requirements, check only node modules

• Create VLAN links from a VLAN trunk before handling access/native VLAN

• Fix propagation of global/default vlan.mode attribute

• Add globally-unique ID to VRFs in case someone needs it

• Numerous SR Linux template fixes

• CL NVUE configures unnumbered interface by setting its IP address to loopback.ipv4

• CumulusLinux 5.x NVUE must use OSPF network statements

• Add dependency check for ansible-galaxy in gRPC installation script

Bug Fixes in Release 1.3

• Cisco IOS needs dot1q encapsulation command on VRF subinterfaces to accept IP addresses

• containerlab download URL has changed

• VyOS BGP configuration syntax changed local-as to system-as in release 1.4.

• Use ‘vyos:current’ box from Vagrant Cloud

• Unnumbered BGP sessions over IPv6 LLA interfaces

• Set ‘vlan.mode’ to an explicit default value (‘irb’)

• Fix vlan.mode attribute precedence

• Don’t crash when encountering VRFs without layer-3 address families