Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
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This figure shows the topology as observed by ONOS. We can see 6 blue OpenFlow switches, and 5 hosts around the edge.
- The host labelled "bgp" is our Internal BGP Speaker. It sits inside our SDN network, and its job is to peer with all the External BGP Routers, learn BGP routes from them, and relay those routes to the SDN-IP application running on ONOS.
- The other four hosts, labelled r1 through r4, are the External BGP Routers. They are the border routers that reside in other networks that want to exchange traffic with us.
- Behind each router is a host, and these are labelled h1 through h4 in Mininet. ONOS can't see these hosts, because the reside in other network that are not controlled by ONOS.
We can look at the configuration of the hosts in the Mininet terminal.
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onos> routes
prefix=192.168.1.0/24, nexthop=10.0.1.1
prefix=192.168.2.0/24, nexthop=10.0.2.1
prefix=192.168.3.0/24, nexthop=10.0.3.1
prefix=192.168.4.0/24, nexthop=10.0.4.1 |
Don't worry if you don't see all of the routes straight away - sometimes it takes a minute or so for the BGP sessions to establish and advertise the routes to ONOS.
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onos> intents -s Connectivity total= 2827 installed= 2827 Connectivity withdrawn= 0 failed= 0 Connectivity submitted= 0 compiling= 0 Connectivity installing= 0 recompiling= 0 Connectivity withdrawing= 0 PointToPoint total= 24 installed= 24 PointToPoint withdrawn= 0 Connectivity failed= 0 PointToPoint withdrawn= 0 failedsubmitted= 0 Connectivity submitted= 0 compiling= 0 Connectivity installing= 0 recompiling= 0 Connectivity withdrawing= 0 PointToPoint total= 24 installed= 24 PointToPoint withdrawn= 0 failed= 0 PointToPoint submitted= 0 compiling= 0 PointToPoint installing= 0 recompiling= 0 PointToPoint withdrawing= 0 MultiPointToSinglePoint total= 4 installed= 4 MultiPointToSinglePoint withdrawn= 0 failed= 0 MultiPointToSinglePoint submitted= 0 compiling= 0 MultiPointToSinglePoint installing= 0 recompiling= 0 MultiPointToSinglePoint withdrawing= 0 SinglePointToMultiPoint total= 0 installed= 0 SinglePointToMultiPoint withdrawn= 0 failed= 0 SinglePointToMultiPoint submitted= 0 compiling= 0 SinglePointToMultiPoint installing= 0 recompiling= 0 SinglePointToMultiPoint withdrawing= 0 Path total= 0 installed= 0 Path withdrawn= 0 failed= 0 Path submitted= 0 compiling= 0 0 compiling= 0 PointToPoint installing= 0 recompiling= Path0 PointToPoint installingwithdrawing= 0 MultiPointToSinglePoint 0 recompilingtotal= 0 3 installed= 3 MultiPointToSinglePoint withdrawn= 0 failed= 0 MultiPointToSinglePoint submitted= 0 compiling= 0 MultiPointToSinglePoint installing= 0 recompiling= 0 MultiPointToSinglePoint withdrawing= 0 SinglePointToMultiPoint total= 0 installed= 0 SinglePointToMultiPoint withdrawn= 0 failed= 0 SinglePointToMultiPoint submitted= 0 compiling= 0 SinglePointToMultiPoint Pathinstalling= 0 recompiling= 0 SinglePointToMultiPoint withdrawing= 0 Path total= 0 installed= 0 Path withdrawn= 0 failed= 0 Path submitted= 0 compiling= 0 Path installing= 0 recompiling= 0 Path withdrawing= 0 LinkCollection total= 0 installed= 0 LinkCollection withdrawn= 0 failed= 0 LinkCollection submitted= 0 compiling= 0 LinkCollection installing= 0 recompiling= 0 LinkCollection withdrawing= 0 UnknownType total= 0 installed= 0 UnknownType withdrawn= 0 failed= 0 UnknownType submitted= 0 compiling= 0 UnknownType installing= 0 recompiling= 0 UnknownType withdrawing= 0 All total= 2827 installed= 2827 All withdrawn= 0 failed= 0 All submitted= 0 compiling= 0 All installing= 0 recompiling= 0 All withdrawing= 0 |
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