- play_arrow Introduction
- play_arrow L2 Features
- play_arrow L3 Features
- play_arrow Cloud-Native Router CNI Configuration Examples
- play_arrow Monitoring and Logging
- play_arrow Troubleshooting
- play_arrow Appendix
VLAN Sub-Interfaces
VLAN sub-interfaces are like logical interfaces on a physical switch or router. They access only tagged packets that match the configured VLAN tag. A sub-interface has a parent interface. A parent interface can have multiple sub-interfaces, each with a VLAN ID. When you run the cloud-native router, you must associate each sub-interface with a specific VLAN. Starting in Juniper Cloud-Native Router Release 23.2, the cloud-native router supports the use of VLAN sub-interfaces in L3 mode along with the previously supported L2 mode.
Configuration Example
The VLAN sub-interfaces are configured using the Netowrk Attachment Definition (NAD) and pod YAML manifests. Please see the Cloud-Native Router Use-Cases and Configuration Overview and relevant configuration examples for more information.
The Cloud-Native Router controller interface configuration viewed using the show
configuration command is as shown below (the output is trimmed for brevity).
For L2 mode:
routing-instances {
switch {
instance-type virtual-switch;
bridge-domains {
bd100 {
vlan-id 100;
interface vhostnet1-1e555ee1-7d93-40.100;
}
}
}
}For L3 mode:
enp24s0f0 {
unit 1 {
vlan-id 10;
family inet {
address 172.168.20.3/24;
}
}
}On the vRouter, a VLAN sub-interface configuration is as shown below:
For L2 mode:
vif0/5 Virtual: vhostnet1-71cd7db1-1a5e-49.100 Vlan(o/i)(,S): 3003/3003 Parent:vif0/4
Type:Virtual(Vlan) HWaddr:00:99:99:99:33:09
Vrf:0 Flags:L2 QOS:-1 Ref:3
RX queue errors to lcore 0 0 0 0 0 0 0 0 0 0 0 0
RX packets:0 bytes:0 errors:0
TX packets:0 bytes:0 errors:0
Drops:0For L3 mode:
vif0/9 Virtual: ens1f0v1.201 Vlan(o/i)(,S): 201/201 Parent:vif0/2 NH: 36 MTU: 1514
Type:Virtual(Vlan) HWaddr:d6:93:87:91:45:6c IPaddr:103.1.1.2
IP6addr:fe80::d493:87ff:fe91:456c
DDP: OFF SwLB: ON
Vrf:1 Mcast Vrf:1 Flags:L3DProxyEr QOS:-1 Ref:4
RX queue errors to lcore 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RX packets:0 bytes:0 errors:0
TX packets:0 bytes:0 errors:0
Drops:0
vif0/10 Virtual: ens1f0v1.201 Vlan(o/i)(,S): 201/201 Parent:vif0/5 NH: 21 MTU: 9000
Type:Virtual(Vlan) HWaddr:d6:93:87:91:45:6c IPaddr:103.1.1.2
IP6addr:fe80::d493:87ff:fe91:456c
DDP: OFF SwLB: ON
Vrf:1 Mcast Vrf:65535 Flags:L3DProxyEr QOS:-1 Ref:4 TxXVif:9
RX queue errors to lcore 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RX packets:0 bytes:0 errors:0
TX packets:0 bytes:0 errors:0
Drops:0