dot1 issue, can't ping 2 interfaces each others

From: Benoit Chesneau <benoitc_at_enki-multimedia.eu>
Date: Tue, 06 Feb 2024 21:11:00 UTC 
I have 2 machines connected on 2 ports of the same switch on which I try to pass a vlan 10 encapsulated in vlan 330 using dot1 q protocol. The configuration is very generic, but I cant ping each others machines

Ex:
```
# ping 1.1.1.198
PING 1.1.1.1.198 (1.1.1.1.198): 56 data bytes
ping: sendto: Host is down
```

Configuration:

M1:
```
vlan330: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
options=680703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
ether 50:65:f3:8b:98:71
groups: vlan
vlan: 330 vlanproto: 802.1ad vlanpcp: 0 parent interface: mlxen0
media: Ethernet autoselect (40Gbase-CR4 <full-duplex,rxpause,txpause>)
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vlan330.10: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1480
options=80000<LINKSTATE>
ether 50:65:f3:8b:98:71
inet 1.1.1.199 netmask 0xfffffffe broadcast 255.255.255.255
groups: vlan
vlan: 10 vlanproto: 802.1q vlanpcp: 0 parent interface: vlan330
media: Ethernet autoselect (40Gbase-CR4 <full-duplex,rxpause,txpause>)
status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
```

M2:

```
vlan330: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
description: service
options=1c680703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG,TXTLS4,TXTLS6>
ether 02:01:02:02:01:00
groups: vlan
vlan: 330 vlanproto: 802.1ad vlanpcp: 0 parent interface: mce0
media: Ethernet 25GBase-SR <full-duplex,txpause>
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vlan330.10: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1480
options=1c080000<LINKSTATE,MEXTPG,TXTLS4,TXTLS6>
ether 02:01:02:02:01:00
inet 1.1.1.198 netmask 0xfffffffe broadcast 255.255.255.255
inet6 fe80::1:2ff:fe02:100%vlan330.10 prefixlen 64 scopeid 0xe
groups: vlan
vlan: 10 vlanproto: 802.1q vlanpcp: 0 parent interface: vlan330
media: Ethernet 25GBase-SR <full-duplex,txpause>
status: active nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

```

On the switch:

```
interface eth-0-29
switchport mode trunk
switchport trunk allowed vlan all!
interface eth-0-30
switchport mode trunk
switchport trunk allowed vlan all!

```

Any idea is welcome :)

Benoît Chesneau, Enki Multimedia
—
t. +33608655490

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