10 January 2014

At my current job we run a lot of Arista gear. They are great little boxes. You can also run Ganglia on them :-) since they are basically Fedora Core 14 OS with some Arista proprietary sauce. You can find Arista specific Ganglia gmetric scripts here


On occasion I have wanted to test some things and Arista offers VM images you can run on your choice of virtualization. You can find more details here


I use KVM on my Ubuntu laptop and although booting the imaged worked I could not SSH into vEOS from my laptop. After a bit of testing I discovered that Arista’s document misses a very important option ie.

-net tap

So full invocation is really

kvm -cdrom Aboot-veos-2.0.8.iso -boot d -hda EOS-4.12.3-veos.vmdk -usb -m 1024 \
    -net nic,macaddr=52:54:00:01:02:03,<wbr></wbr>model=e1000 \
    -net nic,macaddr=52:54:00:01:02:04,<wbr></wbr>model=e1000 \
    -net nic,macaddr=52:54:00:01:02:05,<wbr></wbr>model=e1000 \
    -net nic,macaddr=52:54:00:01:02:06,<wbr></wbr>model=e1000 \
    -net nic,macaddr=52:54:00:01:02:07,<wbr></wbr>model=e1000 \
    -net tap

After that I was able to configure vlan 1 to e.g.

Log in into the console you just fired up and type

localhost(config)#interface vlan 1
localhost(config-if-Vl1)#ip address
localhost(config)#username admin secret 0 secret

You also want to set the password e.g. here I set it to secret and voila you can now SSH into If you have too many SSH private keys loaded log in may not work so turn of public key authentication e.g.

ssh -o PubkeyAuthentication=no admin@

Only note may be that if you just install libvirt /etc/qemu-ifup doesn’t quite work since it determines which bridge to connect to based on the default route To “fix” that add


Just above this section in /etc/qemu-ifup

# only add the interface to default-route bridge if we
# have such interface (with default route) and if that
# only add the interface to default-route bridge if we
# have such interface (with default route) and if that
# interface is actually a bridge.
# It is possible to have several default routes too
for br in $switch; do
    if [ -d /sys/class/net/$br/bridge/. ]; then
        if [ -n "$ip" ]; then
          ip link set "$1" master "$br"
          brctl addif $br "$1"
        exit    # exit with status of the previous command