+
+| Send GRE and check received GRE header
+| | [Documentation] | Send IPv4 UDP packet encapsulated into GRE and \
+| | ... | check if received packed contains correct MAC GRE, IP, UDP headers.
+| | ...
+| | ... | *Arguments:*
+| | ... | - tg_node - Node where to run traffic script. Type: dictionary
+| | ... | - tx_if - Interface from where send GRE packet. Type: string
+| | ... | - rx_if - Interface where to receive GRE packet. Type: string
+| | ... | - tx_dst_mac - Destination MAC address of transferred packet.
+| | ... | Type: string
+| | ... | - tx_src_mac - Source MAC address of transferred packet. Type: string
+| | ... | - tx_outer_dst_ip - Destination IP address of GRE packet. Type: string
+| | ... | - tx_outer_src_ip - Source IP address of GRE packet. Type: string
+| | ... | - tx_inner_dst_ip - Destination IP address of UDP packet. Type: string
+| | ... | - tx_inner_src_ip - Source IP address of UDP packet. Type: string
+| | ... | - rx_dst_mac - Expected destination MAC address. Type: string
+| | ... | - rx_src_mac - Expected source MAC address. Type: string
+| | ... | - rx_outer_dst_ip - Expected destination IP address of received GRE
+| | ... | packet. Type: string
+| | ... | - rx_outer_src_ip - Expected source IP address of received GRE
+| | ... | packet. Type: string
+| | ...
+| | ... | __Note:__
+| | ... | rx_inner_dst_ip and rx_inner_src_ip should be same as transferred
+| | ...
+| | ... | *Return:*
+| | ... | - No value returned
+| | ...
+| | ... | *Example:*
+| | ... | \| Send GRE and check received GRE header \| ${tg_node} \
+| | ... | \| port3 \| port3 \| 08:00:27:f3:be:f0 \| 08:00:27:46:2b:4c \
+| | ... | \| 10.0.0.1 \| 10.0.0.2 \| 192.168.3.100 \| 192.168.2.100 \
+| | ... | \| 08:00:27:46:2b:4c \| 08:00:27:f3:be:f0 \| 10.0.0.3 \| 10.0.0.1 \|
+| | ...
+| | [Arguments] | ${tg_node} | ${tx_if} | ${rx_if}
+| | ... | ${tx_dst_mac} | ${tx_src_mac}
+| | ... | ${tx_outer_dst_ip} | ${tx_outer_src_ip}
+| | ... | ${tx_inner_dst_ip} | ${tx_inner_src_ip}
+| | ... | ${rx_dst_mac} | ${rx_src_mac}
+| | ... | ${rx_outer_dst_ip} | ${rx_outer_src_ip}
+| | ${tx_if_name}= | Get interface name | ${tg_node} | ${tx_if}
+| | ${rx_if_name}= | Get interface name | ${tg_node} | ${rx_if}
+| | ${args}= | Catenate | --tx_if | ${tx_if_name} | --rx_if | ${rx_if_name}
+| | ... | --tx_dst_mac | ${tx_dst_mac} | --tx_src_mac | ${tx_src_mac}
+| | ... | --tx_outer_dst_ip | ${tx_outer_dst_ip}
+| | ... | --tx_outer_src_ip | ${tx_outer_src_ip}
+| | ... | --tx_inner_dst_ip | ${tx_inner_dst_ip}
+| | ... | --tx_inner_src_ip | ${tx_inner_src_ip}
+| | ... | --rx_dst_mac | ${rx_dst_mac}
+| | ... | --rx_src_mac | ${rx_src_mac}
+| | ... | --rx_outer_dst_ip | ${rx_outer_dst_ip}
+| | ... | --rx_outer_src_ip | ${rx_outer_src_ip}
+| | Run Traffic Script On Node
+| | ... | send_gre_check_gre_headers.py | ${tg_node} | ${args}