最近在学习MPLS,感觉有点头痛,这是个比较好的例子,暂时先挂在这了!
拓扑:
LSP-----标签交换路径
说明: r1在AS1中,r2  r5在AS100中,r6在AS6中,r2与r5建立IBGP且AS为100; r2 r3 r4 r5为MPLS domin,
                         r2-r5-ibgp-AS100---------------------r2-r5-ibgp-AS100
-------AS1-r1-----EBGP--------|--r2--------r3--------r4------------r5--|--------EBGP-----r6-AS6---
                                      r2-r3-r4-r5--MPLS Domain
==================================================================================================================

练习拓扑Rack02:
                           r2-r5-ibgp-AS100----------------------------r2-r5-ibgp-AS100
-------AS1-r4-----EBGP----------|--r2-----------r3------------r1----------------r5--|--------EBGP-----r6-AS6---
              e0              e0/0   e0/1   e0/1   e0/0  e0/0     e0/1      e0/1   e0/0              e0
             192.168.42.0/24    192.168.23.0/024  192.168.31.0/24  192.168.15.0/24     192.168.56.0/24
                                              r2-r3-r4-r5--MPLS Domain
 

因为以下没有启用MPLS,所以r4拼不通r6的环回接口(因为有黑洞,启用mpls之后也不行,因为r2 r5是以物理口建ibgp邻居,r1向r2回包时会pop弹掉标签而导致不通),练习笔记中的配置则可以拼通(建议使用练习笔记中的配置)
 
IP初始化:
r4:
en
conf t
host r4
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0
defa int e1
defa int s0
defa int s1
no int loo0
int e0
  ip add 192.168.42.4 255.255.255.0
  no sh
int lo0
  ip add 192.168.4.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  bgp  4
  bgp  router-id  4.4.4.4
  no sy
  no au
  neighbor 192.168.42.2 remote 100
  net 192.168.42.0  mask   255.255.255.0
  net 192.168.4.0   mask   255.255.255.0
end
 
 
r2:
en
conf t
host r2
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
int e0/0
  ip add 192.168.42.2 255.255.255.0
  no sh
int e0/1
  ip add 192.168.23.2 255.255.255.0
  no sh
int lo0
  ip add 192.168.2.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  ospf  100
  router-id  2.2.2.2
  net 192.168.23.2  0.0.0.0  a 0
  net 192.168.2.1   0.0.0.0  a 0
end
router  bgp 100
  bgp router-id 2.2.2.2
  no sy
  no au
  neighbor 192.168.42.4 remote 4
  neighbor 192.168.15.5 remote 100
  network 192.168.23.0 mask 255.255.2550
  network 192.168.2.0 mask 255.255.255.0
end
 
r3:
en
conf t
host r3
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
int e0/0
  ip add 192.168.31.3 255.255.255.0
  no sh
int e0/1
  ip add 192.168.23.3 255.255.255.0
  no sh
int lo0
  ip add 192.168.3.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  ospf  100
  router-id  3.3.3.3
  net 192.168.23.3  0.0.0.0  a 0
  net 192.168.31.3  0.0.0.0  a 0
  net 192.168.3.1   0.0.0.0  a 0
end
 
r1:
en
conf t
host r1
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
int e0/0
  ip add 192.168.31.1 255.255.255.0
  no sh
int e0/1
  ip add 192.168.15.1 255.255.255.0
  no sh
int lo0
  ip add 192.168.1.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router ospf 100
  router-id 1.1.1.1
  network 192.168.31.1 0.0.0.0 a 0
  network 192.168.15.1 0.0.0.0 a 0
  network 192.168.1.1  0.0.0.0 a 0
end
 
 
 
r5:
en
conf t
host r5
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
int e0/1
  ip add 192.168.15.5 255.255.255.0
  no sh
int e0/0
  ip add 192.168.56.5 255.255.255.0
  no sh
int lo0
  ip add 192.168.5.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  ospf  100
  router-id  5.5.5.5
  net 192.168.15.5  0.0.0.0  a 0
  net 192.168.56.5   0.0.0.0  a 0
  net 192.168.5.1  0.0.0.0 a 0
router bgp 100
  bgp router-id 5.5.5.5
  no sy
  no au
  neighbor  192.168.23.2 remote 100
  neighbor  192.168.56.6 remote 6
  network  192.168.15.0 mask 255.255.255.0
  network  192.168.56.0 mask 255.255.255.0
end
 
r6:
en
conf t
host r6
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0
defa int e1
defa int s0
defa int s1
no int loo0
int e0
  ip add 192.168.56.6 255.255.255.0
  no sh
int lo0
  ip add 192.168.6.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  bgp  6
  bgp  router-id  6.6.6.6
  no sy
  no au
  neighbor 192.168.56.5 remote 100
  net 192.168.56.0  mask   255.255.255.0
  net 192.168.6.0   mask   255.255.255.0
end
 
 
 
sw1:
en
vl da
  vl 42 na r4-r2
  vl 31 na r3-r1
  vl 56 na r5-r6
exit
conf t
host sw1
no ip domain-lookup
line con 0
  logg sy
  exec-timeout 0 0
  exit
no ip routing
ip routing
int ra f0/4 , f0/2
  sw mo ac
  sw ac vl 42
int ra f0/3 , f0/1
  sw mo ac
  sw ac vl 31
int ra f0/5 , f0/6
  sw mo ac
  sw ac vl 56
end
 

sw2:

en
vl da
  vl 23 na r2-r3
  vl 15 na r1-r5
  exit
conf t
host sw2
no ip domain-lookup
line con 0
  logg sy
  exec-timeout 0 0
  exit
no ip routing
ip routing
int ra f0/2-3
  sw mo ac
  sw ac vl 23
int ra f0/1 , f0/5
  sw mo ac
  sw ac vl 15
end

===========================================================================================
 

r3#debug mpls packets
MPLS packet debugging is on
r3#
COMM_SERV_RACK2>4
[Resuming connection 4 to r4 ... ]
r4#traceroute ip
Target IP address: 192.168.6.1
Source address: 192.168.4.1
Numeric display [n]:
Timeout in seconds [3]:
Probe count [3]:
Minimum Time to Live [1]:
Maximum Time to Live [30]:
Port Number [33434]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Type escape sequence to abort.
Tracing the route to 192.168.6.1
  1 192.168.42.2 4 msec 4 msec 4 msec
  2 192.168.15.5 [AS 100] 8 msec 12 msec 12 msec
  3 192.168.56.6 [AS 100] 12 msec
COMM_SERV_RACK2>3
[Resuming connection 3 to r3 ... ]
*Ma: Et0/0: recvd: CoS=6, TTL=254, Label(s)=20
*Mar  2 04:16:17.044: MPLS: Et0/1: xmit: (no label)
*Mar  2 04:16:17.052: MPLS: Et0/1: recvd: CoS=0, TTL=255, Label(s)=18
*Mar  2 04:16:17.052: MPLS: Et0/0: xmit: CoS=0, TTL=254, Label(s)=17
*Mar  2 04:16:17.060: MPLS: Et0/0: recvd: CoS=6, TTL=253, Label(s)=20
*Mar  2 04:16:17.060: MPLS: Et0/1: xmit: (no label)
*Mar  2 04:16:17.068: MPLS: Et0/1: recvd: CoS=0, TTL=255, Label(s)=18
*Mar  2 04:16:17.072: MPLS: Et0/0: xmit: CoS=0, TTL=254, Label(s)=17
r3#
*Mar  2 04:16:20.069: MPLS: Et0/1: recvd: CoS=0, TTL=255, Label(s)=18
*Mar  2 04:16:20.069: MPLS: Et0/0: xmit: CoS=0, TTL=254, Label(s)=17
*Mar  2 04:16:20.077: MPLS: Et0/0: recvd: CoS=6, TTL=253, Label(s)=20
*Mar  2 04:16:20.077: MPLS: Et0/1: xmit: (no label)
r3#
*Mar  2 04:16:21.612: MPLS: Et0/1: recvd: CoS=6, TTL=255, Label(s)=18
*Mar  2 04:16:21.612: MPLS: Et0/0: xmit: CoS=6, TTL=254, Label(s)=17
*Mar  2 04:16:21.620: MPLS: Et0/0: recvd: CoS=6, TTL=254, Label(s)=20
*Mar  2 04:16:21.620: MPLS: Et0/1: xmit: (no label)
*Mar  2 04:16:21.820: MPLS: Et0/1: recvd: CoS=6, TTL=255, Label(s)=18
*Mar  2 04:16:21.820: MPLS: Et0/0: xmit: CoS=6, TTL=254, Label(s)=17
r3#und all
All possible debugging has been turned off
r3#
COMM_SERV_RACK2>2
[Resuming connection 2 to r2 ... ]
 
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     192.168.31.0/24   0          Et0/1      192.168.23.3
17     16          192.168.15.0/24   0          Et0/1      192.168.23.3
18     17          192.168.56.0/24   0          Et0/1      192.168.23.3
19     Untagged    192.168.4.0/24    0          Et0/0      192.168.42.4
20     18          192.168.5.0/24    0          Et0/1      192.168.23.3
21     19          192.168.1.0/24    0          Et0/1      192.168.23.3
22     Pop tag     192.168.3.0/24    0          Et0/1      192.168.23.3
 
r2#
r2#sh mpls ldp bind
  tib entry: 192.168.1.0/24, rev 16
        local binding:  tag: 21
        remote binding: tsr: 192.168.3.1:0, tag: 19
  tib entry: 192.168.2.0/24, rev 18
        local binding:  tag: imp-null
        remote binding: tsr: 192.168.3.1:0, tag: 20
  tib entry: 192.168.3.0/24, rev 20
        local binding:  tag: 22
        remote binding: tsr: 192.168.3.1:0, tag: imp-null
  tib entry: 192.168.4.0/24, rev 10
        local binding:  tag: 19
  tib entry: 192.168.5.0/24, rev 12
        local binding:  tag: 20
        remote binding: tsr: 192.168.3.1:0, tag: 18
  tib entry: 192.168.15.0/24, rev 4
        local binding:  tag: 17
        remote binding: tsr: 192.168.3.1:0, tag: 16
  tib entry: 192.168.23.0/24, rev 14
        local binding:  tag: imp-null
        remote binding: tsr: 192.168.3.1:0, tag: imp-null
  tib entry: 192.168.31.0/24, rev 2
        local binding:  tag: 16
        remote binding: tsr: 192.168.3.1:0, tag: imp-null
  tib entry: 192.168.42.0/24, rev 6
        local binding:  tag: imp-null
  tib entry: 192.168.56.0/24, rev 8
        local binding:  tag: 18
        remote binding: tsr: 192.168.3.1:0, tag: 17
r2#

r5#clear  ip  cef  *  prefix-statistics
如果r2与r5之间的环回口为192.168.2.1/24, 结果在r5上的OSPF产生/32位的主机路由而分配标签也可能会导致出问题(IOS有关)
 
=====================================================================================================================
 !! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!!  !!! ok !!
=====================================================================================================================
 
MPLS ×××:
GRE / IPSec  ***
L2TP----(Layer 2 Tunneling Protocol)
L2F-----(Layer 2  Forwarding Protocol)
PPTP----(Point-to-Point Tunneling)

Overlay  ××× 与 Peer to Peer ××× 的区别:
Overlay  ××× 在ISP端并不参与客户路由(如 GRE tunnel / IPSec); ××× 对端是客户去做的;
peer to peer *** 早期使用较少:
客户路由隔离;客户路由的传递;
现在的MPLS即为peer to peer ***, 它能解决上述两个问题.

---C----CE----PE-----P-----P-----P----PE---CE-----C----
VRF-----虚拟路由器,做本地隔离;RD------路由器地址做全局隔离,地址为64位,加上32位的IP路由构成96位的××× V4路由,如1:1-10.1.1.0;7:7-10.1.1.0
 
r2#enable
r2(config)#ip  cef
r2(config)#ip  vrf  r1
r2(config-vrf)#rd  1:1  /  rd  192.168.42.2:1
r2(config)#ip  vrf  r10
r2(config-vrf)#rd  10:10  /  rd  192.168.42.2:10
r2(config-vrf)#exit
r2(config)#int  e0/0.42
r2(config-subif)#ip  vrf  forwarding  r1 --------------------原地址会自动移除,需重设地址;
r2(config-subif)#ip  add  192.168.42.2  255.255.255.0
r2(config)#int  e0/0.102
r2(config-subif)#ip  vrf  forwarding  r10 --------------------原地址会自动移除,需重设地址;
r2(config-subif)#ip  add  192.168.102.2  255.255.255.0
r2(config-subif)#end
r2#sh  run
r2#sh  ip  route  vrf  r1 -----------------------------------查看虚拟子路由器r1的路由表;
r2#ping  vrf  r1  192.168.42.4 ------------------------------拼虚拟子路由器中的192.168.42.4地址;
r2#ping  vrf  r1  10.2.1.1 ----------------------------------拼r4 路由器中的10.2.1.1地址
r2(config)#ip route vrf r1  10.0.0.0 255.252.0.0 e0/0.42  192.168.42.4   -----r2添加到达r4的环回口的静态路由;
r2(config)#ip route vrf r10 10.0.0.0 255.252.0.0 e0/0.102 192.168.102.10 -----r2添加到达r4的环回口的静态路由;
r2(config)#router  bgp  100
r2(config-router)#no bgp default ipv4-unicast --------------------------------关闭bgp单播建邻居传32位路由功能
r2(config-router)#address-family ipv4
r2(config-router-af)#neighbor 192.168.5.1 activate ---------------------------开启bgp 32位邻居,可传32位路由
r2(config-router)#address-family ***v4 ---------------------------------------开启bgp传96位路由功能
r2(config-router-af)#neighbor 192.168.5.1 activate ---------------------------r2与r5在***v4中建邻居关系

r2#sh ip bgp ***v4 all summary -----------------------------------------------查看bgp邻居关系
r2#sh ip bgp ***v4  *  summary -----------------------------------------------查看bgp邻居关系
BGP router identifier 2.2.2.2, local AS number 100
BGP table version is 1, main routing table version 1
Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
192.168.5.1     4   100    1153    1152        1    0    0 00:02:54        0
r2#sh ip protocols vrf r1  ---------------------------------------------------查看r2上vrf运行的路由协议
r2#conf t
r2(config)#router bgp 100
r2(config-router)#address-family ipv4 vrf r1
r2(config-router-af)#redistribute static
r2(config-router-af)#exit
r2(config-router)#address-family ipv4 vrf r10
r2(config-router-af)#redistribute static -----------------让路由器r4与r10的路由经bgp传输
r2#sh ip bgp ***v4 all -----------------------------------查看bgp 的***v4 bgp路由
r2#sh ip bgp ***v4 all neighbors 192.168.5.1 advertised-routes -----查看发给r5的bgp ***v4路由条目

r2(config)#ip vrf r1
r2(config-vrf)#route-target export 1:1  / 100:1  --------------------导出值可不写1:1,可以与 vrf r1的rd值不相同,如100:1
r2(config)#ip vrf r10
r2(config-vrf)#route-target export 10:10 / 1000:10 ------------------让r2的bgp路由能通过***v4发出给r5

r2(config)#ip vrf r1
r2(config-vrf)#route-target import 6:6
r2(config)#ip vrf r10
r2(config-vrf)route-target import 11:11 ------------------让r2能接收r5发过来的***v4路由,默认不接收
r2#sh ip vrf detail --------------------------------------查看vrf的明细信息

           
r4#conf t
r4(config)#ip cef
r4(config)#ip routing
r4(config)#ip route  0.0.0.0  0.0.0.0  e0/0.12  192.168.42.2
r4(config)#end
r4#ping  192.168.42.2
r4#ping  172.16.1.1  source  10.1.1.1 ----------------------测试通
r4#telnet 172.16.3.1 /source-interface loopback 1 ----------测试成功,可看到r4 telnet 到达r6
r10#telnet 172.16.1.1 /source-interface loopback 1 --------测试成功,可看到r10 telnet 到达r11
---------------------------------------------------------------------------------------------------------------
  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !  ok !
---------------------------------------------------------------------------------------------------------------
IP初始化:
r4:
en
conf t
host r4
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0
defa int e1
defa int s0
defa int s1
no int loo0
ip cef
int e0
  ip add  192.168.42.4 255.255.255.0
  no sh
int lo0
  ip add  192.168.4.1 255.255.255.0
  ip ospf network point-to-point
int lo1
  ip add  10.1.1.1 255.255.255.0
  ip ospf network point-to-point
int lo2
  ip add  10.2.1.1 255.255.255.0
  ip ospf network point-to-point
int lo3
  ip add  10.3.1.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
  ip route 0.0.0.0  0.0.0.0  e0  192.168.42.2
end
 

--------------------------------------------------------------------------------------------------------------

r2:
en
conf t
host r2
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
ip cef
int e0/0
  no sh
int e0/0.42
  en do 42
  ip add 192.168.42.2 255.255.255.0
  no sh
int e0/0.102
  en do 102
  ip add 192.168.102.2 255.255.255.0
  no sh 
int e0/1
  ip add 192.168.23.2 255.255.255.0
  no sh
int lo0
  ip add 192.168.2.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  ospf  100
  router-id  2.2.2.2
  net 192.168.23.2  0.0.0.0  a 0
  net 192.168.2.1   0.0.0.0  a 0
end
conf t
router  bgp 100
  bgp router-id 2.2.2.2
  no sy
  no au
  neighbor 192.168.42.4 remote 4
  neighbor 192.168.5.1 remote 100
  neighbor 192.168.5.1 update-source loop0
  neighbor 192.168.5.1 ebgp
  network 192.168.23.0 mask 255.255.255.0
  network 192.168.2.0 mask 255.255.255.0
end
en
conf t
int e0/0
  no sh
int e0/0.42
  en do 42
  ip add 192.168.42.2 255.255.255.0
  no sh
int e0/0.102
  en do 102
  ip add 192.168.102.2 255.255.255.0
  no sh
end
enable
conf t
  ip cef
  mpls label range 2000 2999
  mpls label protocol ldp
int e0/1
  mpls ip
end
conf t
ip vrf r1
  rd 1:1
  exit
ip vrf r10
  rd 10:10
  exit
int e0/0.42
  ip vrf forward r1
  ip add 192.168.42.2 255.255.255.0
int e0/0.102
  ip vrf forward r10
  ip add 192.168.102.2 255.255.255.0
end
conf t
  ip route vrf r1  10.0.0.0 255.252.0.0 e0/0.42  192.168.42.4
  ip route vrf r10 10.0.0.0 255.252.0.0 e0/0.102 192.168.102.10
end
conf t
  ip vrf r1
    route-target export 1:1
    exit
  ip vrf r10
    route-target export 10:10
    exit
  ip vrf r1
    route-target import 6:6
    exit
  ip vrf r10
    route-target import 11:11
    end
conf t
  router bgp 100
  no bgp default ipv4-unicast
  address-family ipv4
    neighbor 192.168.5.1 activate
    exit
  address-family ***v4
    neighbor 192.168.5.1 activate
    exit
 address-family ipv4 vrf r1
   redistribute static
   exit
 address-family ipv4 vrf r10
   redistribute static
   exit
end
 

注: 当时忘了  ip route vrf r10 10.0.0.0 255.252.0.0 e0/0.102 192.168.102.10 则
r10#telnet 172.16.1.1 /source-interface loopback 1  -----无效!!!!! 查了很久

int e0/0.42
  ip vrf forward r1 -------------------------------------写了该行后下行的地址要重写过
  ip add 192.168.42.2 255.255.255.0 ---------------------因为上面,此处地址要重写过
--------------------------------------------------------------------------------------------------------------
 

r3:
 
en
conf t
host r3
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
ip cef
int e0/0
  ip add 192.168.31.3 255.255.255.0
  no sh
int e0/1
  ip add 192.168.23.3 255.255.255.0
  no sh
int lo0
  ip add 192.168.3.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  ospf  100
  router-id  3.3.3.3
  net 192.168.23.3  0.0.0.0  a 0
  net 192.168.31.3  0.0.0.0  a 0
  net 192.168.3.1   0.0.0.0  a 0
end
conf t
  ip cef
  mpls label range 3000 3999
  mpls label protocol ldp
int e0/1
  mpls ip
int e0/0
  mpls ip
end
 
 
--------------------------------------------------------------------------------------------------------------
 
r1:
 
en
conf t
host r1
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
int e0/0
  ip add 192.168.31.1 255.255.255.0
  no sh
int e0/1
  ip add 192.168.15.1 255.255.255.0
  no sh
int lo0
  ip add 192.168.1.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router ospf 100
  router-id 1.1.1.1
  network 192.168.31.1 0.0.0.0 a 0
  network 192.168.15.1 0.0.0.0 a 0
  network 192.168.1.1  0.0.0.0 a 0
end
conf t
  ip cef
  mpls label range 1000 1999
  mpls label protocol ldp
int e0/1
  mpls ip
int e0/0
  mpls ip
end
 
 
 
 
--------------------------------------------------------------------------------------------------------------
 

r5:
 

en
conf t
host r5
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0/0
defa int e0/1
defa int s0/0
defa int s0/1
no int loo0
ip cef
int e0/1
  ip add 192.168.15.5 255.255.255.0
  no sh
int e0/0
  no sh
int e0/0.56
  en do 56
  ip add 192.168.56.5 255.255.255.0
  no sh
int e0/0.115
  en do 115
  ip add 192.168.115.5 255.255.255.0
  no sh
int lo0
  ip add 192.168.5.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
router  ospf  100
  router-id  5.5.5.5
  net 192.168.15.5  0.0.0.0  a 0
  net 192.168.56.5  0.0.0.0  a 0
  net 192.168.5.1  0.0.0.0 a 0
router bgp 100
  bgp router-id 5.5.5.5
  no sy
  no au
  neighbor  192.168.2.1 remote 100
  neighbor  192.168.2.1 update-source loop0
  neighbor  192.168.2.1 ebgp
  neighbor  192.168.56.6 remote 6
  network  192.168.15.0 mask 255.255.255.0
  network  192.168.56.0 mask 255.255.255.0
end
conf t
int e0/0
  no sh
int e0/0.56
  en do 56
  ip add 192.168.56.5 255.255.255.0
  no sh
int e0/0.115
  en do 115
  ip add 192.168.115.5 255.255.255.0
  no sh
end
conf t
  ip cef
  mpls label range 5000 5999
  mpls label protocol ldp
int e0/1
  mpls ip
end
conf t
ip vrf r6
  rd 6:6
  exit
ip vrf r11
  rd 11:11
  exit
int e0/0.56
  ip vrf forward r6
  ip add 192.168.56.5 255.255.255.0
int e0/0.115
  ip vrf forward r11
  ip add 192.168.115.5 255.255.255.0
  end
conf t
  ip route vrf r6  172.16.0.0 255.255.252.0 e0/0.56   192.168.56.6
  ip route vrf r11 172.16.0.0 255.255.252.0 e0/0.115  192.168.115.11
end
conf t
  ip vrf r6
    route-target export 6:6
    exit
  ip vrf r11
    route-target export 11:11
    exit
  ip vrf r6
    route-target import 1:1
    exit
  ip vrf r11
    route-target import 10:10
    end
conf t
router bgp 100
  no bgp default ipv4-unicast
  address-family ipv4
    neighbor 192.168.2.1 activate
    exit
  address-family ***v4
    neighbor 192.168.2.1 activate
    exit
 address-family ipv4 vrf r6
   redistribute static
   exit
 address-family ipv4 vrf r11
   redistribute static
end
 
 
--------------------------------------------------------------------------------------------------------------
 
r6:
 
en
conf t
host r6
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0
defa int e1
defa int s0
defa int s1
no int loo0
line vty 0 4
  pass cisco2
  login
int e0
  ip add 192.168.56.6 255.255.255.0
  no sh
int lo0
  ip add 192.168.6.1 255.255.255.0
  ip ospf network point-to-point
int lo1
  ip add 172.16.1.1 255.255.255.0
  ip ospf network point-to-point
int lo2
  ip add 172.16.2.1 255.255.255.0
  ip ospf network point-to-point
int lo3
  ip add 172.16.3.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
  ip route 0.0.0.0  0.0.0.0  e0  192.168.56.5
end
 

--------------------------------------------------------------------------------------------------------------

r10:
en
conf t
host r10
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0
defa int s0
defa int s1
no int loo0
int e0
  ip add 192.168.102.10 255.255.255.0
  no sh
int lo0
  ip add  192.168.10.1 255.255.255.0
  ip ospf network point-to-point
int lo1
  ip add  10.1.1.1 255.255.255.0
  ip ospf network point-to-point
int lo2
  ip add  10.2.1.1 255.255.255.0
  ip ospf network point-to-point
int lo3
  ip add  10.3.1.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
  ip route 0.0.0.0  0.0.0.0  e0  192.168.102.2
end
 

--------------------------------------------------------------------------------------------------------------
 
r11:
 
en
conf t
host r11
no ip domain-lookup
line con 0
logg sy
exec-timeout 0 0
exit
no ip routing
ip routing
defa int e0
defa int s0
defa int s1
no int loo0
line vty 0 4
  pass cisco2
  login
int e0
  ip add 192.168.115.11 255.255.255.0
  no sh
int lo0
  ip add 192.168.11.1 255.255.255.0
  ip ospf network point-to-point
int lo1
  ip add 172.16.1.1 255.255.255.0
  ip ospf network point-to-point
int lo2
  ip add 172.16.2.1 255.255.255.0
  ip ospf network point-to-point
int lo3
  ip add 172.16.3.1 255.255.255.0
  ip ospf network point-to-point
end
conf t
  ip route 0.0.0.0 0.0.0.0  e0  192.168.115.5
end