+| Documentation | *L2 cross-connect with QinQ test cases*
+| ...
+| ... | *[Top] Network Topologies:* TG-DUT1-DUT2-TG 3-node circular topology with
+| ... | single links between nodes.
+| ... | *[Enc] Packet encapsulations:* Eth-dot1ad-IPv4-ICMPv4 on DUT1-DUT2,
+| ... | Eth-IPv4-ICMPv4 on TG-DUTn for L2 switching of IPv4.
+| ... | *[Cfg] DUT configuration:* DUT1 and DUT2 are configured with L2
+| ... | cross-connect (L2XC) switching with 802.1ad QinQ VLAN tag push and pop.
+| ... | *[Ver] TG verification:* Test ICMPv4 Echo Request packets are
+| ... | sent in both directions by TG on links to DUT1 and DUT2; on receive TG
+| ... | verifies packets for correctness and their IPv4 src-addr, dst-addr and
+| ... | MAC addresses.
+| ... | *[Ref] Applicable standard specifications:* 802dot1ad.