Linux Bridge

[marcm1992]

Does anyone have any idea why VMBR102 is not active?

auto lo
iface lo inet loopback

iface eno1 inet manual

auto vmbr0
iface vmbr0 inet static
        address  172.16.0.1
        netmask  255.255.255.0
        gateway  172.16.0.254
        bridge-ports eno1
        bridge-stp off
        bridge-fd 0

auto vmbr101
iface vmbr101 inet static
        address  10.101.0.0
        netmask  16
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094
#Maryland Office Switch

auto vmbr102
iface vmbr102 inet static
        address  10.102.0.0
        netmask  16
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4094
#DC Office Switch

auto vmbr150
iface vmbr150 inet manual
        bridge-ports none
        bridge-stp off
        bridge-fd 0

 

[toddimus]

Relative noob here, shooting from the hip but... shouldn't the address for a bridge (or other interface) end in .1 rather than .0?
I thought DHCP ranges should start with .0 but not interfaces, since .0 is reserved (as is the last address in the range).

 

[narrateourale]

@toddimus while your argument is not a 100% technically correct, it is true in this situation.

# ipcalc 10.102.0.0/16
Address:   10.102.0.0           00001010.01100110. 00000000.00000000
Netmask:   255.255.0.0 = 16     11111111.11111111. 00000000.00000000
Wildcard:  0.0.255.255          00000000.00000000. 11111111.11111111
=>
Network:   10.102.0.0/16        00001010.01100110. 00000000.00000000
HostMin:   10.102.0.1           00001010.01100110. 00000000.00000001
HostMax:   10.102.255.254       00001010.01100110. 11111111.11111110
Broadcast: 10.102.255.255       00001010.01100110. 11111111.11111111
Hosts/Net: 65534                 Class A, Private Internet

For this particular network and subnet the first usable address is 10.102.0.1