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- CE1 and CE5 are in VPN labnario_1
- CE2 and CE8 are in VPN labnario_2
- ISIS level -2 as IGP
- Connections CE1—PE3 and CE5—PE4 – static routes
- Connection CE2—PE3 – OSPF
- Connection CE8—PE4 – EBGP
- Users in different VPNs cannot access each other.
A BGP/MPLS IP VPN uses the Border Gateway Protocol (BGP) to advertise VPN routes and the Multiprotocol Label Switching (MPLS) to forward VPN packets on backbone networks.