Juniper Virtual-link Configuration Instance in OSPF

As shown in the topology map, AREA2 and area0 are not directly connected, so the network does not have a full topology, at which point we can do virtual-link on the ABR area2 and AREA0 connection, the following is the configuration script:

system {Time-zone Asia/shanghai; root-authentication {Encrypted-password "$1$eb9tnuwo$gyal5nxlo7vdl4n6mrndy1"; # Secret-data} l   
            Ogin {User Olive {UID 1000;   
            Class Super-user;   
            Authentication {Encrypted-password "$1$t5kq/sxd$i12mfkx8pnztgoxj5cs5g0"; # # Secret-data   
        }} services {ssh;   
        Telnet   
        web-management {http;    
                    }}} logical-systems {r1 {interfaces {em1 {unit 12 {   
                    Vlan-id 12;   
                    Family inet {address 10.0.4.5/30;   
                    } \ {Vlan-id 13;   
                    Family inet {address 10.0.4.14/30;  } 
                } inactive:unit {Vlan-id 15;   
                    Family inet {address 172.30.25.2/30; }} lo0 {Unit 1 {family ine   
                    t {address 10.0.0.1/32; }}} protocols {OSPF {area   
                    0.0.0.2 {interface em1.12;   
                Interface em1.13;   
                    }}} r2 {interfaces {em2 {unit 21 {            
                    Vlan-id 12;   
                    Family inet {address 10.0.4.6/30;   
} \ {Vlan-id 23;                    Family inet {address 10.0.4.2/30;   
                    {Vlan-id 24;   
                    Family inet {address 10.0.4.10/30; }} lo0 {Unit 2 {family INE   
                    t {address 10.0.0.2/32; }}} protocols {OSPF {area   
                    0.0.0.2 {interface em2.21;   
                Interface em2.24;   
                }}} r3 {interfaces {em3 {   
                    Unit a {Vlan-id 13;   
      Family inet {address 10.0.4.13/30;              {Vlan-id 23;   
                    Family inet {address 10.0.4.1/30;   
                    {Vlan-id 34;   
                    Family inet {address 10.0.2.5/30;   
                    {Vlan-id 35;   
                    Family inet {address 10.0.2.2/30; }} lo0 {Unit 3 {family INE   
                    t {address 10.0.0.3/32;                         
                }}} protocols {OSPF { Area 0.0.0.2 {interface em3.31;  
                Area 0.0.0.1 {interface em3.35;   
                Interface em3.34; } area 0.0.0.0 {virtual-link Neighbor-id 10.0.0.5 transit-area 0.0.0.1;//virtua                                    
    L-link can only be configured inside the AREA0, Neighbor-id refers to the end Rid,transit-area refers to the area that virtual-link to pass}}   
                    R4 {interfaces {em4 {Unit 42 {   
                    Vlan-id 24;   
                    Family inet {address 10.0.4.9/30;   
                    {Vlan-id 34;   
                    Family inet {address 10.0.2.6/30;   
                    {Vlan-id 45;   
                    Family inet {    Address 10.0.2.10/30; }} lo0 {Unit 4 {family INE   
                    t {address 10.0.0.4/32; }}} protocols {OSPF {area   
                0.0.0.2 {interface em4.42;   
                    Area 0.0.0.1 {interface em4.45;   
                Interface em4.43;   
                Area 0.0.0.0 {virtual-link Neighbor-id 10.0.0.5 transit-area 0.0.0.1; }}} R5 {interfaces {em5 {unit   
                    {Vlan-id 35;   
                    Family inet {address 10.0.2.1/30;   
        }   
                }        Unit Si {Vlan-id 45;   
                    Family inet {address 10.0.2.9/30;   
                    {Vlan-id 56;   
                    Family inet {address 10.0.8.6/30;   
                    {Vlan-id 57;   
                    Family inet {address 10.0.8.9/30; }} lo0 {Unit 5 {family INE   
                    t {address 10.0.0.5/32;  }}} protocols {OSPF   
                    {Area 0.0.0.1 {interface em5.53;   
        Interface em5.54;        Area 0.0.0.0 {virtual-link Neighbor-id 10.0.0.4 transit-area 0.0.0.1;   
                    Virtual-link Neighbor-id 10.0.0.3 transit-area 0.0.0.1;   
                    Interface em5.57;   
                Interface em5.56; }}} r6 {interfaces {em6 {unit   
                    Vlan-id {56;   
                    Family inet {address 10.0.8.5/30;   
                    {Vlan-id 67;   
                    Family inet {address 10.0.8.1/30;   
                    }} lo0 {Unit 6 {   
                    Family inet {address 10.0.0.6/32;   
           }     }}} protocols {OSPF {area 0.0.0.0 {   
                    Interface em6.65;   
                Interface em6.67; }}} R7 {interfaces {em7 {unit   
                    Vlan-id 57;   
                    Family inet {address 10.0.8.10/30;   
                    {Vlan-id 67;   
                    Family inet {address 10.0.8.2/30; }} lo0 {Unit 7 {family INE   
                    t {address 10.0.0.7/32; }}} protocols {OSPF {   
                Area 0.0.0.0 {interface em7.75;   
                Interface em7.76; }}}} interfaces {em0 {unit 0 {family inet   
            {Address 192.168.1.254/24;   
    }}} em1 {vlan-tagging;   
    } em2 {vlan-tagging;   
    } em3 {vlan-tagging;   
    } em4 {vlan-tagging;   
    } EM5 {vlan-tagging;   
    } EM6 {vlan-tagging;   
    } EM7 {vlan-tagging;  } olive# run show OSPF neighbor Logical-system all Logical-system:                 R2 address Interface State ID Pri Dead 10.0.4.5 em2.21                 Full 10.0.0.1 128 10.0.4.9 em2.24Full 10.0.0.4 128-----logical-system:r3 10.0.2.6 em3.34 Fu ll 10.0.0.4 128 10.0.2.1 em3.35 full 10.0.0.5 128 33 10.0      .4.14 em3.31 Full 10.0.0.1 128 10.0.2.1 full      10.0.0.5 0-----logical-system:r1 10.0.4.6 em1.12 Full   
        
10.0.0.2 128 10.0.4.13 em1.13 full 10.0.0.3 128-----        LOGICAL-SYSTEM:R5 10.0.8.5 em5.56 full 10.0.0.6 128 34 10.0.8.10 em5.57 full 10.0.0.7 128 10.0.2.2 vl-10.0.0.3 full 10.0         .0.3 0 10.0.2.10 vl-10.0.0.4 full 10.0.0.4 0 34 10.0.2.2                 em5.53Full 10.0.0.3 128 10.0.2.10 em5.54 full 10.0.0.4 128 32-- ---logical-system:r4 10.0.2.5 em4.43 full 10.0.0.3 128 39 10.0      .2.9 em4.45 Full 10.0.0.5 128 Notoginseng 10.0.4.10 full   
        
10.0.0.2 128 10.0.2.9 vl-10.0.0.5 full 10.0.0.5 0-----         LOGICAL-SYSTEM:R7 10.0.8.9 em7.75 full 10.0.0.5 128 36 10.0.8.1         em7.76 full 10.0.0.6 128-----LOGICAL-SYSTEM:R6 10.0.8.6 em6.65 full 10.0.0.5 128 10.0.8.2 em6.67 full 10. 0.0.7 128-----olive# run show OSPF interface Logical-system all LOGICAL-SYSTEM:R2 I Nterface State   Area Dr ID BDR ID NBRs em2.21 Dr 0.0.0.2 10.0.0.2 10.   
        
0.0.1 1 em2.24 BDR 0.0.0.2 10.0.0.4 10.0.0.2 1-----              LOGICAL-SYSTEM:R3 em3.34 BDR 0.0.0.1 10.0.0.4 10.0.0.3 1 em3.35        BDR 0.0.0.1 10.0.0.5 10.0.0.3 1 em3.31 DR 0.0.0.2 10.0.0.3   
        
10.0.0.1 1 vl-10.0.0.5 pttopt 0.0.0.0 0.0.0.0 0.0.0.0 1----- LOGICAL-SYSTEM:R1 em1.12 BDR 0.0.0.2 10.0.0.2 10.0.0.1 1 em1.1 3 BDR 0.0.0.2 10.0.0.3 10.0.0.1 1-----logical-system:r5 EM5         BDR 0.0.0.0 10.0.0.6 10.0.0.5 1 em5.57 BDR 0.0.0.0 10.0.0.7 10.0.0.5 1 vl-10.0.0.3 pttopt 0.0.0.0 0.0.0.0 0.0.0.0 1 vl-10.0.0.4        Pttopt 0.0.0.0 0.0.0.0 0.0.0.0 1 em5.53 DR 0.0.0.1 10.0.0.5   
        
10.0.0.3 1 em5.54 DR 0.0.0.1 10.0.0.5 10.0.0.4 1-----              LOGICAL-SYSTEM:R4 em4.43 DR 0.0.0.1 10.0.0.4 10.0.0.3 1 em4.45 BDR 0.0.0.1 10.0.0.5 10.0.0.4 1 em4.42 DR 0.0.0.2 10. 0.0.4 10.0.0.2 1 vl-10.0.0.5 pttopt 0.0.0.0 0.0.0.0 0.0.0.0 1-   
----LOGICAL-SYSTEM:R7 em7.75 DR 0.0.0.0 10.0.0.7 10.0.0.5 1   
em7.76 DR 0.0.0.0 10.0.0.7 10.0.0.6 1-----LOGICAL-SYSTEM:R6 em6.65 DR 0.0.0.0 10.0.0.6 10.0.0.5 1 em6.67 BDR 0.0.0.0 10.0.0.7 10.0.0.6 1

This article is from the "Rista" blog, please be sure to keep this source http://rista.blog.51cto.com/2526140/946558