Step 4a. Enable nextHopSelf on RB1 and RB2¶
Goals¶
[explanation]
Configuration¶
Same network as the previous step.
The configuration in omnetpp.ini is the following:
[Config Step4a]
description = "Enable nextHopSelf on RB1 and RB2"
extends = Step4
# set nextHopSelf in both RB1 and RB2. They change next hop to
# themselfe before forwarding Update message to the other peer
*.R*.bgp.bgpConfig = xmldoc("BGPConfig_IBGP_NextHopSelf.xml")
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="20.0.0.2" >
<Network address='20.0.0.0' />
<Neighbor address='20.0.0.1' nextHopSelf='true' />
</Router>
<!--router RB2-->
<Router interAddr="20.0.0.1" >
<Network address='20.0.0.0' />
<Neighbor address='20.0.0.2' nextHopSelf='true' />
</Router>
</AS>
<AS id="64700">
<!--router RC1-->
<Router interAddr="30.0.0.1" />
</AS>
<!--bi-directional E-BGP session between RA4 and RB1-->
<Session id="1">
<Router exterAddr="192.168.0.6"/>
<Router exterAddr="192.168.0.5"/>
</Session>
<!--bi-directional E-BGP session between RB2 and RC1-->
<Session id="2">
<Router exterAddr="192.168.0.1"/>
<Router exterAddr="192.168.0.2"/>
</Session>
</BGPConfig>