Step 100. BGP Policy¶
Goals¶
[explanation]
Configuration¶
This step uses the following network:
network BGP_Topology_1a
{
@display("bgb=1081.6675,985.49");
submodules:
configurator: Ipv4NetworkConfigurator {
@display("p=93,44");
}
visualizer: IntegratedMultiCanvasVisualizer {
@display("p=243.2025,43.536247");
}
RB2: Router {
@display("p=770.3949,436.40866");
}
RB3: Router {
@display("p=770.3949,525.4717");
}
RB4: Router {
@display("p=877.2705,485.3933");
}
RB1: Router {
@display("p=670.19904,485.3933");
}
RA4: Router {
@display("p=407.4632,487.6199");
}
RA2: Router {
@display("p=305.04077,427.50238");
}
RA3: Router {
@display("p=305.04077,525.4717");
}
RA1: Router {
@display("p=209.29803,478.7136");
}
switch1: EtherSwitch {
@display("p=115.78189,476.48703");
}
switch2: EtherSwitch {
@display("p=305.04077,333.98624");
}
switch3: EtherSwitch {
@display("p=305.04077,618.9878");
}
switch4: EtherSwitch {
@display("p=770.3949,333.98624");
}
switch5: EtherSwitch {
@display("p=770.3949,618.9878");
}
switch6: EtherSwitch {
@display("p=1004.18524,483.16675");
}
host0: StandardHost {
@display("p=113.55532,333.98624");
}
host1: StandardHost {
@display("p=1004.18524,347.34567");
}
RC1: Router {
@display("p=425.2758,754.8089");
}
RC3: Router {
@display("p=527.69824,797.11383");
}
RC4: Router {
@display("p=630.12067,754.8089");
}
switch7: EtherSwitch {
@display("p=761.4886,750.3557");
}
host2: StandardHost {
@display("p=760.1975,862.96246");
}
switch8: EtherSwitch {
@display("p=527.69824,888.4034");
}
RC2: Router {
@display("p=527.69824,703.59766");
}
RD2: Router {
@display("p=542.81,176.545");
}
RD3: Router {
@display("p=542.81,266.135");
}
RD4: Router {
@display("p=646.8925,225.2925");
}
switch9: EtherSwitch {
@display("p=778.6425,223.97499");
}
RD1: Router {
@display("p=442.68,225.2925");
}
switch10: EtherSwitch {
@display("p=542.81,72.4625");
}
host3: StandardHost {
@display("p=776.0075,115.939995");
}
switch11: EtherSwitch {
@display("p=304.3425,221.34");
}
switch12: EtherSwitch {
@display("p=304.3425,749.6575");
}
connections:
RB2.ethg++ <--> Eth100M <--> RB4.ethg++;
RB3.ethg++ <--> Eth100M <--> RB4.ethg++;
RB1.ethg++ <--> Eth100M <--> RB2.ethg++;
RB1.ethg++ <--> Eth100M <--> RB3.ethg++;
RB1.ethg++ <--> Eth100M <--> RA4.ethg++;
RA4.ethg++ <--> Eth100M <--> RA2.ethg++;
RA3.ethg++ <--> Eth100M <--> RA4.ethg++;
RA2.ethg++ <--> Eth100M <--> RA1.ethg++;
RA1.ethg++ <--> Eth100M <--> RA3.ethg++;
switch1.ethg++ <--> Eth100M <--> RA1.ethg++;
RA2.ethg++ <--> Eth100M <--> switch2.ethg++;
RA3.ethg++ <--> Eth100M <--> switch3.ethg++;
RB2.ethg++ <--> Eth100M <--> switch4.ethg++;
RB3.ethg++ <--> Eth100M <--> switch5.ethg++;
switch1.ethg++ <--> Eth100M <--> host0.ethg++;
switch6.ethg++ <--> Eth100M <--> host1.ethg++;
RB4.ethg++ <--> Eth100M <--> switch6.ethg++;
RC2.ethg++ <--> Eth100M <--> RC4.ethg++;
RC3.ethg++ <--> Eth100M <--> RC4.ethg++;
RC1.ethg++ <--> Eth100M <--> RC2.ethg++;
RC1.ethg++ <--> Eth100M <--> RC3.ethg++;
RC3.ethg++ <--> Eth100M <--> switch8.ethg++;
switch7.ethg++ <--> Eth100M <--> host2.ethg++;
RC4.ethg++ <--> Eth100M <--> switch7.ethg++;
RC2.ethg++ <--> Eth100M <--> RB1.ethg++;
RC2.ethg++ <--> Eth100M <--> RA4.ethg++;
RD2.ethg++ <--> Eth100M <--> RD4.ethg++;
RD3.ethg++ <--> Eth100M <--> RD4.ethg++;
RD1.ethg++ <--> Eth100M <--> RD2.ethg++;
RD1.ethg++ <--> Eth100M <--> RD3.ethg++;
switch9.ethg++ <--> Eth100M <--> host3.ethg++;
RD4.ethg++ <--> Eth100M <--> switch9.ethg++;
RB1.ethg++ <--> Eth100M <--> RD3.ethg++;
RD1.ethg++ <--> Eth100M <--> switch11.ethg++;
RD2.ethg++ <--> Eth100M <--> switch10.ethg++;
RC1.ethg++ <--> Eth100M <--> switch12.ethg++;
RA4.ethg++ <--> Eth100M <--> RD3.ethg++;
}
The configuration in omnetpp.ini is the following:
[Config Step100]
description = "BGP Policy"
network = BGP_Topology_1a
*.configurator.config = xml("<config> \
<interface hosts='RA4' names='eth0' address='192.168.x.x' netmask='255.x.x.x'/> \
<interface hosts='RB1' names='eth2' address='192.168.x.x' netmask='255.x.x.x'/> \
\
<interface hosts='RA4' names='eth3' address='192.168.x.x' netmask='255.x.x.x'/> \
<interface hosts='RC2' names='eth3' address='192.168.x.x' netmask='255.x.x.x'/> \
\
<interface hosts='RA4' names='eth4' address='192.168.x.x' netmask='255.x.x.x'/> \
<interface hosts='RD3' names='eth3' address='192.168.x.x' netmask='255.x.x.x'/> \
\
<interface hosts='RB1' names='eth3' address='192.168.x.x' netmask='255.x.x.x'/> \
<interface hosts='RC2' names='eth2' address='192.168.x.x' netmask='255.x.x.x'/> \
\
<interface hosts='RD3' names='eth2' address='192.168.x.x' netmask='255.x.x.x'/> \
<interface hosts='RB1' names='eth4' address='192.168.x.x' netmask='255.x.x.x'/> \
\
<interface among='host0 RA*' address='10.x.x.x' netmask='255.x.x.x'/> \
<interface hosts='RA*' address='10.x.x.x' netmask='255.x.x.x'/> \
\
<interface among='host1 RB*' address='20.x.x.x' netmask='255.x.x.x'/> \
<interface hosts='RB*' address='20.x.x.x' netmask='255.x.x.x'/> \
\
<interface among='host2 RC*' address='30.x.x.x' netmask='255.x.x.x'/> \
<interface hosts='RC*' address='30.x.x.x' netmask='255.x.x.x'/> \
\
<interface among='host3 RD*' address='40.x.x.x' netmask='255.x.x.x'/> \
<interface hosts='RD*' address='40.x.x.x' netmask='255.x.x.x'/> \
\
<route hosts='host*' destination='*' netmask='0.0.0.0' interface='eth0' /> \
</config>")
# OSPF configuration
*.R*.hasOspf = true
*.R*.ospf.ospfConfig = xmldoc("OSPFConfig_FullAS.xml")
*.RA4.ipv4.routingTable.routerId = "10.0.0.5"
*.RB1.ipv4.routingTable.routerId = "20.0.0.18"
*.RC2.ipv4.routingTable.routerId = "30.0.0.22"
*.RD3.ipv4.routingTable.routerId = "40.0.0.17"
# BGP configuration
*.RA4.hasBgp = true
*.RB1.hasBgp = true
*.RC2.hasBgp = true
*.RD3.hasBgp = true
*.R*.bgp.bgpConfig = xmldoc("BGPConfig_FullAS.xml")
# enable OSPF redistribution
*.RA4.bgp.redistributeOspf = "O IA"
*.RB1.bgp.redistributeOspf = "O IA"
*.RC2.bgp.redistributeOspf = "O IA"
*.RD3.bgp.redistributeOspf = "O IA"
The BGP configuration:
<?xml version="1.0" encoding="ISO-8859-1"?>
<BGPConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="BGP.xsd">
<TimerParams>
<connectRetryTime> 120 </connectRetryTime>
<holdTime> 180 </holdTime>
<keepAliveTime> 60 </keepAliveTime>
<startDelay> 60 </startDelay>
</TimerParams>
<AS id="64500">
<!--router RA4-->
<Router interAddr="10.0.0.1" />
</AS>
<AS id="64600">
<!--router RB1-->
<Router interAddr="20.0.0.6" />
</AS>
<AS id="64700">
<!--router RC2-->
<Router interAddr="30.0.0.2" />
</AS>
<AS id="64800">
<!--router RD3-->
<Router interAddr="40.0.0.13" />
</AS>
<!--bi-directional E-BGP session between RA4 and RB1-->
<Session id="1">
<Router exterAddr="192.168.0.2"/>
<Router exterAddr="192.168.0.1"/>
</Session>
<!--bi-directional E-BGP session between RA4 and RC2-->
<Session id="2">
<Router exterAddr="192.168.0.13"/>
<Router exterAddr="192.168.0.14"/>
</Session>
<!--bi-directional E-BGP session between RA4 and RD3-->
<Session id="3">
<Router exterAddr="192.168.0.17"/>
<Router exterAddr="192.168.0.18"/>
</Session>
<!--bi-directional E-BGP session between RB1 and RC2-->
<Session id="4">
<Router exterAddr="192.168.0.5"/>
<Router exterAddr="192.168.0.6"/>
</Session>
<!--bi-directional E-BGP session between RB1 and RD3-->
<Session id="5">
<Router exterAddr="192.168.0.9"/>
<Router exterAddr="192.168.0.10"/>
</Session>
</BGPConfig>
Results¶
[explanation]
Sources: BGP_Topology_1a.ned,
omnetpp.ini,
OSPFConfig_FullAS.xml,
BGPConfig_FullAS.xml