Issue
In this
example we will examine L2VPN with AToM
Our CEs
in this example are R1 and R5
Our PEs
are R2 and R4, and R3 is the P
We will
run OSPF as the IGP inside the MPLS backbone and we will configure EIGRP as the
routing protocol running between the CEs
R1 and R2
will run back to back frame-relay with R2 acting as the frame relay switch
Configuration
R1
R1#sh
run int s0/0
interface
Serial0/0
 no ip address
 encapsulation frame-relay
 clock rate 64000
 no frame-relay inverse-arp
R1#sh
run int s0/0.1
interface
Serial0/0.1 point-to-point
 ip address 192.1.15.1 255.255.255.0
 snmp trap link-status
 frame-relay interface-dlci 100   
R1#sh
run int lo0
interface
Loopback0
 ip address 1.1.1.1 255.255.255.255
end
R1#sh
run | sec router eigrp
router
eigrp 15
 network 1.1.1.1 0.0.0.0
 network 192.1.15.1 0.0.0.0
 no auto-summary
R2
R2#sh
run int s0/0
interface
Serial0/0
 no ip address
 encapsulation frame-relay
 clock rate 64000
 no frame-relay inverse-arp
 frame-relay intf-type dce
R2#sh
run int f0/0
interface
FastEthernet0/0
 ip address 192.1.23.2 255.255.255.0
 speed 100
 full-duplex
 mpls ip
interface
Loopback0
 ip address 2.2.2.2 255.255.255.255
R2#sh
run | inc switching
frame-relay
switching
R2#sh
run | sec connect
connect
FR Serial0/0 100 l2transport
 xconnect 4.4.4.4 15 pw-class MSSK
R2#sh
run | sec router ospf
router
ospf 1
 router-id 2.2.2.2
 log-adjacency-changes
 network 2.2.2.2 0.0.0.0 area 0
 network 192.1.23.2 0.0.0.0 area 0
pseudowire-class
MSSK
 encapsulation mpls
 interworking ip
mpls
label protocol ldp
mpls
ldp router-id Loopback0 force
R3
R3#sh
run int f0/0
interface
FastEthernet0/0
 ip address 192.1.23.3 255.255.255.0
 speed 100
 full-duplex
 mpls ip
R3#sh
run int f0/1
interface
FastEthernet0/1
 ip address 192.1.34.3 255.255.255.0
 speed 100
 full-duplex
 mpls ip
R3#sh
run int lo0
interface
Loopback0
 ip address 3.3.3.3 255.255.255.255
R3#sh
run | sec router ospf
router
ospf 1
 router-id 3.3.3.3
 log-adjacency-changes
 network 3.3.3.3 0.0.0.0 area 0
 network 192.1.23.3 0.0.0.0 area 0
 network 192.1.34.3 0.0.0.0 area 0
mpls
label protocol ldp
mpls
ldp router-id Loopback0 force
R4
R4#sh
run int f0/0
interface
FastEthernet0/0
 ip address 192.1.34.4 255.255.255.0
 speed 100
 full-duplex
 mpls ip
R4#sh
run int f0/1
interface
FastEthernet0/1
 no ip address
 speed 100
 full-duplex
 xconnect 2.2.2.2 15 pw-class MSSK
R4#sh
run int lo0
interface
Loopback0
 ip address 4.4.4.4 255.255.255.255
R4#sh
run | sec router ospf
router
ospf 1
 router-id 4.4.4.4
 log-adjacency-changes
 network 4.4.4.4 0.0.0.0 area 0
 network 192.1.34.4 0.0.0.0 area 0
R4#sh
run | sec pse 
pseudowire-class
MSSK
 encapsulation mpls
 interworking ip
mpls
label protocol ldp
mpls
ldp router-id Loopback0 force
R5
R5#sh
run int f0/0
interface
FastEthernet0/0
 ip address 192.1.15.5 255.255.255.0
 speed 100
 full-duplex
R5#sh
run int lo0
interface
Loopback0
 ip address 5.5.5.5 255.255.255.255
R5#sh
run | sec router eigrp
router
eigrp 15
 network 5.5.5.5 0.0.0.0
 network 192.1.15.5 0.0.0.0
 no auto-summary
Verification
R2#sh
mpls ldp neighbor 
    Peer LDP Ident: 3.3.3.3:0; Local LDP Ident
2.2.2.2:0
        TCP connection: 3.3.3.3.25091 -
2.2.2.2.646
        State: Oper; Msgs sent/rcvd: 64/64;
Downstream
        Up time: 00:48:56
        LDP discovery sources:
          FastEthernet0/0, Src IP addr:
192.1.23.3
        Addresses bound to peer LDP Ident:
          192.1.23.3      192.1.34.3      3.3.3.3         
    Peer LDP Ident: 4.4.4.4:0; Local LDP Ident
2.2.2.2:0
        TCP connection: 4.4.4.4.22816 -
2.2.2.2.646
        State: Oper; Msgs sent/rcvd: 61/61;
Downstream
        Up time: 00:46:17
        LDP discovery sources:
          Targeted Hello 2.2.2.2 -> 4.4.4.4,
active, passive
        Addresses bound to peer LDP Ident:
          192.1.34.4      4.4.4.4         
R2#sh
mpls ldp neighbor 4.4.4.4 detail 
    Peer LDP Ident: 4.4.4.4:0; Local LDP Ident
2.2.2.2:0
        TCP connection: 4.4.4.4.22816 -
2.2.2.2.646
        State: Oper; Msgs sent/rcvd: 61/61;
Downstream; Last TIB rev sent 10
        Up time: 00:46:24; UID: 2; Peer Id 1;
        LDP discovery sources:
          Targeted Hello 2.2.2.2 -> 4.4.4.4,
active, passive;
            holdtime: infinite, hello interval:
10000 ms
        Addresses bound to peer LDP Ident:
          192.1.34.4      4.4.4.4         
        Peer holdtime: 180000 ms; KA interval:
60000 ms; Peer state: estab
        Clients: Dir Adj Client
R3#sh
mpls ldp neighbor 
    Peer LDP Ident: 2.2.2.2:0; Local LDP Ident
3.3.3.3:0
        TCP connection: 2.2.2.2.646 -
3.3.3.3.25091
        State: Oper; Msgs sent/rcvd: 64/64;
Downstream
        Up time: 00:49:18
        LDP discovery sources:
          FastEthernet0/0, Src IP addr:
192.1.23.2
        Addresses bound to peer LDP Ident:
          192.1.23.2      2.2.2.2         
    Peer LDP Ident: 4.4.4.4:0; Local LDP Ident
3.3.3.3:0
        TCP connection: 4.4.4.4.16338 -
3.3.3.3.646
        State: Oper; Msgs sent/rcvd: 65/65;
Downstream
        Up time: 00:49:05
        LDP discovery sources:
          FastEthernet0/1, Src IP addr:
192.1.34.4
        Addresses bound to peer LDP Ident:
          192.1.34.4      4.4.4.4 
R4#sh
mpls ldp neighbor 
    Peer LDP Ident: 3.3.3.3:0; Local LDP Ident
4.4.4.4:0
        TCP connection: 3.3.3.3.646 -
4.4.4.4.16338
        State: Oper; Msgs sent/rcvd: 66/65;
Downstream
        Up time: 00:49:25
        LDP discovery sources:
          FastEthernet0/0, Src IP addr:
192.1.34.3
        Addresses bound to peer LDP Ident:
          192.1.23.3      192.1.34.3      3.3.3.3         
    Peer LDP Ident: 2.2.2.2:0; Local LDP Ident
4.4.4.4:0
        TCP connection: 2.2.2.2.646 -
4.4.4.4.22816
        State: Oper; Msgs sent/rcvd: 62/62; Downstream
        Up time: 00:47:00
        LDP discovery sources:
          Targeted Hello 4.4.4.4 -> 2.2.2.2,
active, passive
        Addresses bound to peer LDP Ident:
          192.1.23.2      2.2.2.2         
R4#sh
mpls ldp neighbor 2.2.2.2 detail 
    Peer LDP Ident: 2.2.2.2:0; Local LDP Ident
4.4.4.4:0
        TCP connection: 2.2.2.2.646 -
4.4.4.4.22816
        State: Oper; Msgs sent/rcvd: 62/62;
Downstream; Last TIB rev sent 10
        Up time: 00:47:03; UID: 2; Peer Id 1;
        LDP discovery sources:
          Targeted Hello 4.4.4.4 -> 2.2.2.2,
active, passive;
            holdtime: infinite, hello interval:
10000 ms
        Addresses bound to peer LDP Ident:
          192.1.23.2      2.2.2.2         
        Peer holdtime: 180000 ms; KA interval:
60000 ms; Peer state: estab
        Clients: Dir Adj Client
R1#sh
ip eigrp neighbors 
IP-EIGRP
neighbors for process 15
H   Address                 Interface       Hold Uptime   SRTT  
RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   192.1.15.5              Se0/0.1           13 00:44:01   11  
200  0  3
R1#sh
ip route eigrp
     5.0.0.0/32 is subnetted, 1 subnets
D       5.5.5.5 [90/2297856] via 192.1.15.5,
00:44:07, Serial0/0.1
R5#sh
ip eigrp neighbors 
IP-EIGRP
neighbors for process 15
H   Address                 Interface       Hold Uptime   SRTT  
RTO  Q  Seq
                                           
(sec)         (ms)       Cnt Num
0   192.1.15.1              Fa0/0             14 00:44:17   14  
200  0  3
R5#sh
ip route eigrp
     1.0.0.0/32 is subnetted, 1 subnets
D       1.1.1.1 [90/156160] via 192.1.15.1,
00:44:18, FastEthernet0/0
R1#ping
5.5.5.5 source 1.1.1.1
Type
escape sequence to abort.
Sending
5, 100-byte ICMP Echos to 5.5.5.5, timeout is 2 seconds:
Packet
sent with a source address of 1.1.1.1 
!!!!!
Success
rate is 100 percent (5/5), round-trip min/avg/max = 12/12/16 ms
R1#traceroute
5.5.5.5 source 1.1.1.1
Type
escape sequence to abort.
Tracing
the route to 5.5.5.5
  1 192.1.15.5 8 msec 12 msec *
R2#sh
mpls forwarding-table 
Local  Outgoing   
Prefix            Bytes tag  Outgoing  
Next Hop    
tag    tag or VC  
or Tunnel Id      switched   interface              
16     Pop tag    
3.3.3.3/32        0          Fa0/0      192.1.23.3   
17     17         
4.4.4.4/32        0          Fa0/0      192.1.23.3   
18     Pop tag    
192.1.34.0/24     0          Fa0/0      192.1.23.3   
19                 l2ckt(15)         43506      none      
point2point  
R2#sh
mpls l2transport summary 
Destination
address: 4.4.4.4, total number of vc: 1
  0 unknown, 1 up, 0 down, 0 admin down, 0
recovering
  1 active vc on MPLS interface Fa0/0
R2#sh
mpls l2transport vc 15
Local
intf     Local circuit              Dest address    VC ID     
Status    
-------------  -------------------------- ---------------
---------- ----------
Se0/0          FR DLCI 100                4.4.4.4         15         UP       
R4#sh
mpls l2transport summary 
Destination
address: 2.2.2.2, total number of vc: 1
  0 unknown, 1 up, 0 down, 0 admin down, 0
recovering
  1 active vc on MPLS interface Fa0/0
R4#sh
mpls l2transport vc 15
Local
intf     Local circuit              Dest address    VC ID     
Status    
-------------  -------------------------- ---------------
---------- ----------
Fa0/1          Ethernet                   2.2.2.2         15         UP        
R4#sh
mpls l2transport binding 15
  Destination Address: 2.2.2.2,  VC ID: 15
    Local Label:  19
        Cbit: 1,    VC Type: IP,    GroupID: 0
        MTU: 1500,   Interface Desc: n/a
        VCCV: CC Type: CW [1], RA [2]
              CV Type: LSPV [2]
    Remote Label: 19
        Cbit: 1,    VC Type: IP,    GroupID: 0
        MTU: 1500,   Interface Desc: n/a
        VCCV: CC Type: CW [1], RA [2]
              CV Type: LSPV [2]
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