nordunet nordic infrastructure for research & education lhcone p2p routing without dynamic...

NORDUnet Nordic Infrastructure for Research & Education

LHCone P2P routingwithout dynamic router

configuration

Magnus Bergroth

NORDUnetNordic infrastructure for Research & Education

LHC sites


GPN BGP

Advertise reachability


BGP Peering

eBGP TCP, local IP – remote IP local AS – remote AS


P2P


P2P Single Vlan

Point to point Single connection


P2P Full Mesh Vlans

Point to point A - B, Vlan 1 B – C, Vlan 2 C – A, Vlan 3


P2P n x subinterface

Use the first available unused vlanP2P swap vlan-id if needed


IP single VlanFull mesh of BGP sessions BGP establish when links goes up.


IP Vlan meshVlan tied to site, pre configured ip /31 per Vlan.BGP or static routing with BFD


n x subinterfaceOther side unknown IP addresses can’t be assigned. Un-numbered not possible with BGP. RIP can advertise reachability over un-numbered interfaces. BFD to faster detect link status


Summary

Single Vlan

Mesh Vlans

n x Vlans

Connectivity

One site at the time

Any to any n sites at the time

IP addressing

Shared IP space

IP peer vlan

Un-numbered

Routing BGP BGP, Static with BFD

RIP with BFD


Usage of P2P

All traffic between sites will use available P2P links


Advertise subset of IP space

Statefull firewall kills asymmetric traffic


Filter/Policy based forwarding


Out of this scope

Have software that controls the Border Routers and inserts Policy/Filter based rules.Source IP + port, Destination IP + port pointing to P2P vlan.


Last slide, out of ideas

nordunet nordic infrastructure for research & education lhcone p2p routing without dynamic...

Documents

research educationfilterpolicy

research educationout

research educationgpn

research educationlast

p2p vlan

local ip remote ip local

source ip port

destination ip port