mec.js
Example
<run>
<script src="common.js"></script>
<script src="mec.js">
mec('P6', 'P7', 'P5', ['10.45.13.0/24','10.45.14.0/24'], '10.45.13.100');
</script>
</run>Example (with NAT)
<run>
<script src="common.js"></script>
<script src="mec.js">
mec_with_nat('P6', 'P7', 'P5', '10.45.0.0/16', '192.168.1.2');
</script>
</run>Script source
/*
2023/12/28 first add
2024/1/3 add UE to UE setup
nb_port : eNB/gNB Port, ex. P6
core_port : Core Port, ex. P7
bo_port : Breakout Port, ex. P5
bo_ue_ip : Breakout UE IP range, ex. 10.45.16.0/24 or [10.45.16.0/24, 10.45.17.0/24]
bo_gateway: Breakout Gateway, ex. 10.45.16.100
bo_ta_ip : Breakout Target IP range, ex. 192.168.1.0/24 (optional)
ue2ue : UE to UE, default false (optional)
*/
function mec(nb_port, core_port, bo_port, bo_ue_ip, bo_gateway, bo_ta_ip = '', ue2ue = false) {
print('<filter id="1" sessionBase="no"><or>');
if (Array.isArray(bo_ue_ip)) {
bo_ue_ip.forEach(item => print('<find name="ip.src" relation="==" content="' + item + '"/>'));
} else {
print('<find name="ip.src" relation="==" content="' + bo_ue_ip + '"/>');
}
print('</or></filter>');
print('<filter id="2" sessionBase="no"><or>');
if (Array.isArray(bo_ue_ip)) {
bo_ue_ip.forEach(item => print('<find name="arp.request.target.ip" relation="==" content="' + item + '"/>'));
} else {
print('<find name="arp.request.target.ip" relation="==" content="' + bo_ue_ip + '"/>');
}
print('</or></filter>');
print('<filter id="3" sessionBase="no"><or>');
if (bo_ta_ip.length > 0) {
print('<find name="ip.dst" relation ="==" content="' + bo_ta_ip + '"/>');
}
print('</or></filter>');
print('<filter id="4" sessionBase="no"><or>');
if (Array.isArray(bo_ue_ip)) {
bo_ue_ip.forEach(item => print('<find name="ip.dst" relation="==" content="' + item + '"/>'));
} else {
print('<find name="ip.dst" relation="==" content="' + bo_ue_ip + '"/>');
}
print('</or></filter>');
print('<filter id="5" sessionBase="no"><or>' +
'<find name="arp.request.target.ip" relation="!=" content="' + bo_gateway + '"/>' +
'</or></filter>');
print('<output id="1" arp_dstip_mac="yes">' +
'<port>' + bo_port + '</port>' +
'<gateway>' + bo_gateway + '</gateway>' +
'<stripping>gtp</stripping>' +
'</output>' +
'<output id="2">' +
'<port>' + nb_port + '</port>' +
'<tagging>gtp2</tagging>' +
'</output>' +
'<output id="3">' +
'<port>' + bo_port + '</port>' +
'<arp_reply_default_mac/>' +
'</output>');
if (ue2ue) {
print('<output id="4">' +
'<port>' + nb_port + '</port>' +
'<stripping>gtp</stripping>' +
'<tagging>gtp2</tagging>' +
'</output>');
}
port_mirror(core_port, nb_port);
if (ue2ue) {
port_chain(nb_port, port_chain_next('O4', 'F1,F4', 'O1', 'and'), 'F1,F3', core_port, 'and');
} else {
port_chain(nb_port, 'O1', 'F1,F3', core_port, 'and');
}
port_chain(bo_port, 'O3', 'F2,F5', port_chain_next('O2', 'F4'), 'and');
}
/*
nb_port : eNB/gNB Port, ex. P6
core_port : Core Port, ex. P7
bo_port : Breakout Port, ex. P5
bo_ue_ip : Breakout UE IP range, ex. 10.45.16.0/24 or [10.45.16.0/24, 10.45.17.0/24]
bo_nat_ip : Breakout NAT IP, ex. 192.168.1.2
bo_gateway : Breakout Gateway, ex. 192.168.1.1 (optional)
bo_ta_ip : Breakout Target IP range, default '', ex. 192.168.1.0/24 (optional)
ue2ue : UE to UE, default false (optional)
*/
function mec_with_nat(nb_port, core_port, bo_port, bo_ue_ip, bo_nat_ip, bo_gateway = '', bo_ta_ip = '', ue2ue = false) {
print('<action>' +
'<port>' + bo_port + '</port>' +
'<ip>' + bo_nat_ip + '</ip>' +
'<arp_reply_default_mac/>' +
'<icmp_reply/></action>');
print('<filter id="1" sessionBase="no"><or>');
if (Array.isArray(bo_ue_ip)) {
bo_ue_ip.forEach(item => print('<find name="ip.src" relation="==" content="' + item + '"/>'));
} else {
print('<find name="ip.src" relation="==" content="' + bo_ue_ip + '"/>');
}
print('</or></filter>');
print('<filter id="3" sessionBase="no"><or>');
if (bo_ta_ip.length > 0) {
print('<find name="ip.dst" relation ="==" content="' + bo_ta_ip + '"/>');
}
print('</or></filter>');
print('<filter id="4" sessionBase="no"><or>');
if (Array.isArray(bo_ue_ip)) {
bo_ue_ip.forEach(item => print('<find name="ip.dst" relation="==" content="' + item + '"/>'));
} else {
print('<find name="ip.dst" relation="==" content="' + bo_ue_ip + '"/>');
}
print('</or></filter>');
print('<filter id="5" sessionBase="no"><or>' +
'<find name="ip.dst" relation="==" content="' + bo_nat_ip + '"/>' +
'</or></filter>');
print('<output id="1" arp_dstip_mac="yes">' +
'<port>' + bo_port + '</port>');
print('<modify_src_default_mac/>' +
'<modify_srcip nat="yes">' + bo_nat_ip + '</modify_srcip>');
if (bo_gateway.length > 0) {
print('<gateway>' + bo_gateway + '</gateway>');
}
print('<stripping>gtp</stripping>' +
'</output>' +
'<output id="2">' +
'<port>' + nb_port + '</port>' +
'<modify_dstip2nat/>' +
'<tagging>gtp2</tagging>' +
'</output>');
if (ue2ue) {
print('<output id="4">' +
'<port>' + nb_port + '</port>' +
'<stripping>gtp</stripping>' +
'<tagging>gtp2</tagging>' +
'</output>');
}
port_mirror(core_port, nb_port);
if (ue2ue) {
port_chain(nb_port, port_chain_next('O4', 'F1,F4', 'O1', 'and'), 'F1,F3', core_port, 'and');
} else {
port_chain(nb_port, 'O1', 'F1,F3', core_port, 'and');
}
port_chain(bo_port, 'O2', 'F5');
}Last updated