Arista MPLS VPN Step by Step (2c) L2VPN - Tcpdump

One powerful tool in Arista/EOS is tcpdump. In this setup, for example, if you see some traffic issue and want to see if the PE sending out the packets, you can do the tcpdump this way:

If you want to check the type 5 pw between CE1 and CE2, 

Step 1: find out the mpls ldp tunnel

PE1(config)#sh patch panel forwarding
In/Out                     Type CW VLAN Status Patch
-------------------------- ---- -- ---- ------ --------------------
....
Et47/3                        5         Up     ce1-ce2-pw5-1
   Label 132770, LDP Tun 5  <<< tunnel 5

Step 2: check mpls ldp tunnel 5 fwding info so have the interface name

PE1(config)#sh mpls ldp tunnel 5
   Index       Endpoint              Nexthop         Interface      Labels
----------- --------------------- --------------- ----------------- ----------
   5           88.255.22.22/32       88.1.11.1       Ethernet3/1    [ 100005 ]

Step 3: create the monitor session to dump packet to cpu

monitor session ldp-et3-1 source Ethernet3/1

monitor session ldp-et3-1 destination Cpu

Step 4: tcpdump the packet

bash tcpdump -nevvi mirror0 ether proto 0x8847 -w /mnt/flash/ldp.pcp