I love to be the “uncola” of networking sites.  I like interop and I don’t do a lot with Cisco because I don’t have access to much of their gear anymore.  So, that being the case, I had a need to bring up a l2circuit (in JunOS speak), or VLL (in Brocade speak) between an MX480 and an MLX.  Since they are very different platforms, I had to do some digging and playing around to get it to work.
You should have a rudimentary understanding of MPLS (which is about what I have) to do this. l2circuit / pseudowire / vll are all synonymous for the scope of this post.
JunOS:

set protocols l2circuit neighbor interface virtual-circuit-id
set protocols l2circuit neighbor interface encapsulation-type ethernet
set interfaces xe-3/3/0 description
set interfaces xe-3/3/0 vlan-tagging
set interfaces xe-3/3/0 encapsulation flexible-ethernet-services
set interfaces xe-3/3/0 unit encapsulation vlan-ccc
set interfaces xe-3/3/0 unit vlan-id

Brocade:

MLX1#show mpls config
router mpls
policy
no propagate-ttl
mpls-interface e1/1
ldp-enable
mpls-interface e1/4
ldp-enable
vll TEST-ICCN-VLL-1 raw-mode
vll-peer
vlan
tagged e 5/2

Some commands I found helpful for debugging while testing this out:
JunOS:
Useful for debugging connections that won’t come up:

set protocols l2circuit traceoptions file l2-VLL
set protocols l2circuit traceoptions file size 20240
set protocols l2circuit traceoptions flag all
show log l2-VLL

Brocade:

logging console
terminal monitor
debug mpls all
debug mpls ldp

Show commands that are very useful:
JunOS:
check end to end l2circuit / VLL connectivity

ping mpls l2circuit interface  detail

Show detail of l2circuit / pseudowire / vll
show interfaces extensive # or detail
Brocade:

show VLL detail