1.PE1和P和PE2之间跑IGP协议运营商里面首选的还是ISIS协议我们实验的话，用的是OSPF协议R3的IP地址和OSPF配置[R3]display ip int brief
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1.PE1和P和PE2之间跑IGP协议
运营商里面首选的还是ISIS协议
我们实验的话，用的是OSPF协议
R3的IP地址和OSPF配置
[R3]display ip int brief *down: administratively down^down: standby(l): loopback(s): spoofingThe number of interface that is UP in Physical is 5The number of interface that is DOWN in Physical is 1The number of interface that is UP in Protocol is 5The number of interface that is DOWN in Protocol is 1Interface IP Address/Mask Physical Protocol GigabitEthernet0/0/0 13.1.1.3/24 up up GigabitEthernet0/0/1 23.1.1.3/24 up up GigabitEthernet1/0/0 34.1.1.3/24 up up GigabitEthernet2/0/0 unassigned down down LoopBack0 3.3.3.3/32 up up(s) NULL0 unassigned up up(s) [R3]dis current-configuration configuration ospf[V200R003C00]#ospf 1 router-id 3.3.3.3 area 0.0.0.0 network 3.3.3.3 0.0.0.0 network 34.1.1.0 0.0.0.255 #return[R3]R4的IP地址和OSPF配置
[R4]display ip int brief *down: administratively down^down: standby(l): loopback(s): spoofingThe number of interface that is UP in Physical is 4The number of interface that is DOWN in Physical is 0The number of interface that is UP in Protocol is 4The number of interface that is DOWN in Protocol is 0Interface IP Address/Mask Physical Protocol GigabitEthernet0/0/0 34.1.1.4/24 up up GigabitEthernet0/0/1 45.1.1.4/24 up up LoopBack0 4.4.4.4/32 up up(s) NULL0 unassigned up up(s) [R4]display current-configuration configuration ospf[V200R003C00]#ospf 1 router-id 4.4.4.4 area 0.0.0.0 network 4.4.4.4 0.0.0.0 network 34.1.1.0 0.0.0.255 network 45.1.1.0 0.0.0.255 #returnR5的IP地址和OSPF的配置
<R5>display ip int brief *down: administratively down^down: standby(l): loopback(s): spoofingThe number of interface that is UP in Physical is 5The number of interface that is DOWN in Physical is 0The number of interface that is UP in Protocol is 5The number of interface that is DOWN in Protocol is 0Interface IP Address/Mask Physical Protocol GigabitEthernet0/0/0 45.1.1.5/24 up up GigabitEthernet0/0/1 56.1.1.5/24 up up GigabitEthernet1/0/0 57.1.1.5/24 up up LoopBack0 5.5.5.5/32 up up(s) NULL0 unassigned up up(s) <R5>display current-configuration configuration ospf[V200R003C00]#ospf 1 router-id 5.5.5.5 area 0.0.0.0 network 5.5.5.5 0.0.0.0 network 45.1.1.0 0.0.0.255 #return2.检查结果
在R4上面检查我们的结果
[R4]display ospf peer brief OSPF Process 1 with Router ID 4.4.4.4 Peer Statistic Information ---------------------------------------------------------------------------- Area Id Interface Neighbor id State 0.0.0.0 GigabitEthernet0/0/0 3.3.3.3 Full 0.0.0.0 GigabitEthernet0/0/1 5.5.5.5 Full ----------------------------------------------------------------------------在R4上面检查是否通过OSPF学习到R3和R5network发布的路由
[R4]display ip routing-table protocol ospfRoute Flags: R - relay, D - download to fib------------------------------------------------------------------------------Public routing table : OSPF Destinations : 2 Routes : 2 OSPF routing table status : <Active> Destinations : 2 Routes : 2Destination/Mask Proto Pre Cost Flags NextHop Interface 3.3.3.3/32 OSPF 10 1 D 34.1.1.3 GigabitEthernet0/0/0 5.5.5.5/32 OSPF 10 1 D 45.1.1.5 GigabitEthernet0/0/1OSPF routing table status : <Inactive> Destinations : 0 Routes : 03.PE1和P和PE2之间跑MPLS协议和MPLS LDP协议
原因就是解决BGP跨设备路由黑洞问题
R3的MPLS和MPLS LDP的配置
全局下的配置
#mpls lsr-id 3.3.3.3mplsmpls ldp#接口下的配置#interface GigabitEthernet1/0/0 mpls mpls ldp#R4的MPLS和MPLS LDP的配置
全局下的配置
#mpls lsr-id 4.4.4.4mplsmpls ldp#接口下的配置#interface GigabitEthernet0/0/0 mpls mpls ldp#interface GigabitEthernet0/0/1 mpls mpls ldp#R5的MPLS和MPLS LDP的配置
全局下的配置
#mpls lsr-id 5.5.5.5mplsmpls ldp#接口下的配置#interface GigabitEthernet0/0/0 mpls mpls ldp#4.检查MPLS LDP关系
在R4上面查看于R3和R5之间的LDP关系
[R4]display mpls ldp session all LDP Session(s) in Public Network Codes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM) A '*' before a session means the session is being deleted. ------------------------------------------------------------------------------ PeerID Status LAM SsnRole SsnAge KASent/Rcv ------------------------------------------------------------------------------ 3.3.3.3:0 Operational DU Active 0000:00:36 148/148 5.5.5.5:0 Operational DU Passive 0000:00:36 147/147 ------------------------------------------------------------------------------ TOTAL: 2 session(s) Found.在R5上面分别查看是否对3.3.3.3/32分发标签
<R5>display mpls lsp include 3.3.3.3 32 ------------------------------------------------------------------------------- LSP Information: LDP LSP-------------------------------------------------------------------------------FEC In/Out Label In/Out IF Vrf Name 3.3.3.3/32 NULL/1024 -/GE0/0/0 3.3.3.3/32 1024/1024 -/GE0/0/0 <R4>display mpls lsp include 3.3.3.3 32------------------------------------------------------------------------------- LSP Information: LDP LSP-------------------------------------------------------------------------------FEC In/Out Label In/Out IF Vrf Name 3.3.3.3/32 NULL/3 -/GE0/0/0 3.3.3.3/32 1024/3 -/GE0/0/0 <R3>display mpls lsp include 3.3.3.3 32------------------------------------------------------------------------------- LSP Information: LDP LSP-------------------------------------------------------------------------------FEC In/Out Label In/Out IF Vrf Name 3.3.3.3/32 3/NULL -/- 在R3上面分别查看是否对5.5.5.5/32分发标签
<R3>display mpls lsp include 5.5.5.5 32------------------------------------------------------------------------------- LSP Information: LDP LSP-------------------------------------------------------------------------------FEC In/Out Label In/Out IF Vrf Name 5.5.5.5/32 NULL/1025 -/GE1/0/0 5.5.5.5/32 1025/1025 -/GE1/0/0 <R4>display mpls lsp include 5.5.5.5 32------------------------------------------------------------------------------- LSP Information: LDP LSP-------------------------------------------------------------------------------FEC In/Out Label In/Out IF Vrf Name 5.5.5.5/32 NULL/3 -/GE0/0/1 5.5.5.5/32 1025/3 -/GE0/0/1 <R5>display mpls lsp include 5.5.5.5 32------------------------------------------------------------------------------- LSP Information: LDP LSP-------------------------------------------------------------------------------FEC In/Out Label In/Out IF Vrf Name 5.5.5.5/32 3/NULL -/- 5.在PE1和PE2上面分别配置VRF和RD和RT
在PE1和PE2上面分别对A公司的分部和总部进行定义VRF
PE1上面定义A公司分部
#ip ***-instance ***13 ipv4-family route-distinguisher 1:3 ***-target 100:300 export-extcommunity ***-target 100:300 import-extcommunity# PE2上面定义A公司总部
#ip ***-instance ***75 ipv4-family route-distinguisher 7:5 ***-target 100:300 export-extcommunity ***-target 100:300 import-extcommunity#在PE1和PE2上面分别对A公司的分部和总部进行定义VRF调用
PE1上面定义A公司分部VRF的调用
#interface GigabitEthernet0/0/0 ip binding ***-instance ***13 ip address 13.1.1.3 255.255.255.0 #注意：调用VRF的时候，该接口下的配置就会消失 #interface GigabitEthernet0/0/0 ip address 13.1.1.3 255.255.255.0 #[R3-GigabitEthernet0/0/0]ip binding ***-instance ***13Nov 2 2019 14:59:50-08:00 R3 %%01IFNET/4/LINK_STATE(l)[3]:The line protocol IP on the interface GigabitEthernet0/0/0 has entered the DOWN state. Info: All IPv4 related configurations on this interface are removed!Info: All IPv6 related configurations on this interface are removed![R3-GigabitEthernet0/0/0]dis this[V200R003C00]#interface GigabitEthernet0/0/0 ip binding ***-instance ***13#[R3-GigabitEthernet0/0/0]ip address 13.1.1.3 24Nov 2 2019 15:00:02-08:00 R3 %%01IFNET/4/LINK_STATE(l)[4]:The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state. [R3-GigabitEthernet0/0/0] 怎么样查看VRF的路由呢？
[R3]display ip routing-table ***-instance ***13 Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: ***13 Destinations : 6 Routes : 6 Destination/Mask Proto Pre Cost Flags NextHop Interface 13.1.1.0/24 Direct 0 0 D 13.1.1.3 GigabitEthernet0/0/0 13.1.1.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 13.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R3] 在PE1上面的全局路由表里面根本就看不到13网段的任何路由
[R3]display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 11 Routes : 11 Destination/Mask Proto Pre Cost Flags NextHop Interface 3.3.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0 4.4.4.4/32 OSPF 10 1 D 34.1.1.4 GigabitEthernet1/0/0 5.5.5.5/32 OSPF 10 2 D 34.1.1.4 GigabitEthernet1/0/0 34.1.1.0/24 Direct 0 0 D 34.1.1.3 GigabitEthernet1/0/0 34.1.1.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet1/0/0 34.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet1/0/0 45.1.1.0/24 OSPF 10 2 D 34.1.1.4 GigabitEthernet1/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R3] PE2上面定义A公司总部VRF的调用
#interface GigabitEthernet1/0/0 ip binding ***-instance ***75 ip address 57.1.1.5 255.255.255.0 #[R5]display ip routing-table ***-instance ***75 Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: ***75 Destinations : 6 Routes : 6 Destination/Mask Proto Pre Cost Flags NextHop Interface 57.1.1.0/24 Direct 0 0 D 57.1.1.5 GigabitEthernet1/0/0 57.1.1.5/32 Direct 0 0 D 127.0.0.1 GigabitEthernet1/0/0 57.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet1/0/0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0[R5]display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 11 Routes : 11 Destination/Mask Proto Pre Cost Flags NextHop Interface 3.3.3.3/32 OSPF 10 2 D 45.1.1.4 GigabitEthernet0/0/0 4.4.4.4/32 OSPF 10 1 D 45.1.1.4 GigabitEthernet0/0/0 5.5.5.5/32 Direct 0 0 D 127.0.0.1 LoopBack0 34.1.1.0/24 OSPF 10 2 D 45.1.1.4 GigabitEthernet0/0/0 45.1.1.0/24 Direct 0 0 D 45.1.1.5 GigabitEthernet0/0/0 45.1.1.5/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 45.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0 在PE1和PE2上面分别对B公司的分部和总部进行定义VRF
PE1上面定义B公司分部
#ip ***-instance ***23 ipv4-family route-distinguisher 2:3 ***-target 200:400 export-extcommunity ***-target 200:400 import-extcommunity#PE2上面定义B公司总部
#ip ***-instance ***65 ipv4-family route-distinguisher 6:5 ***-target 200:400 export-extcommunity ***-target 200:400 import-extcommunity#在PE1和PE2上面分别对B公司的分部和总部进行定义VRF调用
PE1上面定义B公司分部VRF的调用
#interface GigabitEthernet0/0/1 ip binding ***-instance ***23 ip address 23.1.1.3 255.255.255.0 #PE2上面定义B公司总部VRF的调用
#interface GigabitEthernet0/0/1 ip binding ***-instance ***65 ip address 56.1.1.5 255.255.255.0 #总结：此时PE1和PE2上面有三张表
一个是FIB表（全局路由表）
一个是***13表
一个是***23表
三张表之间的关系相互独立，互不影响
6.CE1和PE1之间的路由协议
注意：CE和PE之间可以启用静态、RIP、OSPF、ISIS、BGP协议
但是推荐启用BGP协议
CE1的BGP的配置
#bgp 100 peer 13.1.1.3 as-number 500 # ipv4-family unicast undo synchronization network 1.1.1.1 255.255.255.255 peer 13.1.1.3 enable#PE1的BGP的配置
[R3-bgp]ipv4-family ? multicast Specify multicast address family unicast Specify unicast address family 默认情况你的BGP都在单播里面 ***-instance Specify *** instance 但是你要进入这个***-INSTANCE视图里面去 ***v4 Specify ***v4 address family[R3-bgp]ipv4-family ***-instance ***13[R3-bgp-***13]dis this[V200R003C00]# # ipv4-family ***-instance ***13 peer 13.1.1.1 as-number 100 #在PE1查看BGP ***-instance的关系
[R3]display bgp ***v4 ***-instance ***13 peer BGP local router ID : 3.3.3.3 Local AS number : 500 ***-Instance ***13, Router ID 3.3.3.3: Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 13.1.1.1 4 100 20 20 0 00:17:56 Established 1[R1]display bgp peer BGP local router ID : 13.1.1.1 Local AS number : 100 Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 13.1.1.3 4 500 20 21 0 00:17:08 Established 1 检查在PE1上面是否学习到关于CE1设备的1.1.1.1/32的路由
[R3]display bgp ***v4 ***-instance ***13 routing-table BGP Local router ID is 3.3.3.3 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete ***-Instance ***13, Router ID 3.3.3.3: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *> 1.1.1.1/32 13.1.1.1 0 0 100i剩下的CE2和PE2之间的BGP
R7的BGP配置
#bgp 300 peer 57.1.1.5 as-number 500 # ipv4-family unicast undo synchronization network 7.7.7.7 255.255.255.255 peer 57.1.1.5 enable#PE2BGP的配置
[R5]bgp 500[R5-bgp]ipv4-family ***-instance ***75[R5-bgp-***75]DIS THIS[V200R003C00]# ipv4-family ***-instance ***75 peer 57.1.1.7 as-number 300 #在R7上面进行检查
[R7]display bgp peer BGP local router ID : 57.1.1.7 Local AS number : 300 Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 57.1.1.5 4 500 90 88 0 01:25:01 Established 1[R7]在PE2上面进行检查
[R5-bgp]display bgp ***v4 ***-instance ***75 peer BGP local router ID : 45.1.1.5 Local AS number : 500 ***-Instance ***75, Router ID 45.1.1.5: Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 57.1.1.7 4 300 88 91 0 01:25:13 Established 1[R5-bgp]display bgp ***v4 ***-instance ***75 routing-table BGP Local router ID is 45.1.1.5 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete ***-Instance ***75, Router ID 45.1.1.5: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn*> 7.7.7.7/32 57.1.1.7 0 0 300i[R5-bgp]剩下的CE3和PE1之间的BGP
#bgp 200 peer 23.1.1.3 as-number 500 # ipv4-family unicast undo synchronization network 2.2.2.2 255.255.255.255 peer 23.1.1.3 enable#return[R2-bgp][R3]bgp 500[R3-bgp]ip[R3-bgp]ipv4-family ***[R3-bgp]ipv4-family ***v4[R3-bgp]ipv4-family ***-instance ***23[R3-bgp-***23][R3-bgp-***23][R3-bgp-***23]dis this[V200R003C00]# # ipv4-family ***-instance ***23 peer 23.1.1.2 as-number 200 #return[R3-bgp-***23][R2]display bgp peer BGP local router ID : 23.1.1.2 Local AS number : 200 Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 23.1.1.3 4 500 91 91 0 01:28:11 Established 1[R3-bgp]display bgp ***v4 ***-instance ***23 peer BGP local router ID : 3.3.3.3 Local AS number : 500 ***-Instance ***23, Router ID 3.3.3.3: Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 23.1.1.2 4 200 91 92 0 01:28:28 Established 1[R3-bgp]display bgp ***v4 ***-instance ***23 rou [R3-bgp]display bgp ***v4 ***-instance ***23 routing-table BGP Local router ID is 3.3.3.3 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete ***-Instance ***23, Router ID 3.3.3.3: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *> 2.2.2.2/32 23.1.1.2 0 0 200i *>i 6.6.6.6/32 5.5.5.5 0 100 0 400i剩下的CE4和PE2之间的BGP
bgp 400 peer 56.1.1.5 as-number 500 # ipv4-family unicast undo synchronization network 6.6.6.6 255.255.255.255 peer 56.1.1.5 enable#[R5-bgp][R5-bgp]bgp 500[R5-bgp]ip[R5-bgp]ipv6-family[R5-bgp]ipv4-family ***[R5-bgp]ipv4-family ***v4[R5-bgp]ipv4-family ***-instance ***[R5-bgp]ipv4-family ***-instance ***65[R5-bgp-***65]dis this[V200R003C00]# # ipv4-family ***-instance ***65 peer 56.1.1.6 as-number 400 #return[R5-bgp-***65][R6]display bgp peer BGP local router ID : 56.1.1.6 Local AS number : 400 Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 56.1.1.5 4 500 93 94 0 01:30:21 Established 1[R5-bgp]display bgp ***v4 ***-instance ***65 peer BGP local router ID : 45.1.1.5 Local AS number : 500 ***-Instance ***65, Router ID 45.1.1.5: Total number of peers : 1 Peers in established state : 1 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 56.1.1.6 4 400 93 93 0 01:30:35 Established 1[R5-bgp]display bgp ***v4 ***-instance ***65 rou [R5-bgp]display bgp ***v4 ***-instance ***65 routing-table BGP Local router ID is 45.1.1.5 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete ***-Instance ***65, Router ID 45.1.1.5: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *>i 2.2.2.2/32 3.3.3.3 0 100 0 200i *> 6.6.6.6/32 56.1.1.6 0 0 400i 7.PE1和PE2之间建立MP-BGP的关系
在PE1上面的配置
7.PE1和PE2之间建立MP-BGP的关系在PE1上面的配置bgp 500 undo default ipv4-unicast peer 5.5.5.5 as-number 500 peer 5.5.5.5 connect-interface LoopBack0 # ipv4-family unicast undo synchronization peer 5.5.5.5 enable peer 5.5.5.5 next-hop-local # ipv4-family ***v4 policy ***-target peer 5.5.5.5 enable 因为PE设备之间的路由是***V4的路由# 在PE2上面的配置bgp 500 peer 3.3.3.3 as-number 500 peer 3.3.3.3 connect-interface LoopBack0 # ipv4-family unicast undo synchronization peer 3.3.3.3 enable peer 3.3.3.3 next-hop-local # ipv4-family ***v4 policy ***-target peer 3.3.3.3 enable #检查MP-BGP的关系[R3]display bgp ***v4 all peer BGP local router ID : 3.3.3.3 Local AS number : 500 Total number of peers : 3 Peers in established state : 3 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 5.5.5.5 4 500 98 101 0 01:34:50 Established 2 Peer of IPv4-family for *** instance : ***-Instance ***13, Router ID 3.3.3.3: 13.1.1.1 4 100 36 36 0 00:33:30 Established 1 ***-Instance ***23, Router ID 3.3.3.3: 23.1.1.2 4 200 98 99 0 01:35:22 Established 1[R5]display bgp ***v4 all peer BGP local router ID : 45.1.1.5 Local AS number : 500 Total number of peers : 3 Peers in established state : 3 Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv 3.3.3.3 4 500 104 102 0 01:38:29 Established 2 Peer of IPv4-family for *** instance : ***-Instance ***65, Router ID 45.1.1.5: 56.1.1.6 4 400 102 102 0 01:39:01 Established 1 ***-Instance ***75, Router ID 45.1.1.5: 57.1.1.7 4 300 101 104 0 01:38:40 Established 1 在R3上面查看我们***V4的路由表 R3上面都会学习到各个站点的VRF的***V4路由，但是R3这边他会根据各个VRF路由里面所携带的RD和RT参数，R3就是把各自的路由放入到各自的***-Instance当中[R3]display bgp ***v4 all routing-table BGP Local router ID is 3.3.3.3 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete Total number of routes from all PE: 4 Route Distinguisher: 1:3 Network NextHop MED LocPrf PrefVal Path/Ogn *> 1.1.1.1/32 13.1.1.1 0 0 100i Route Distinguisher: 2:3 Network NextHop MED LocPrf PrefVal Path/Ogn *> 2.2.2.2/32 23.1.1.2 0 0 200i Route Distinguisher: 6:5 Network NextHop MED LocPrf PrefVal Path/Ogn *>i 6.6.6.6/32 5.5.5.5 0 100 0 400i Route Distinguisher: 7:5 Network NextHop MED LocPrf PrefVal Path/Ogn *>i 7.7.7.7/32 5.5.5.5 0 100 0 300i ***-Instance ***13, Router ID 3.3.3.3: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *> 1.1.1.1/32 13.1.1.1 0 0 100i *>i 7.7.7.7/32 5.5.5.5 0 100 0 300i ***-Instance ***23, Router ID 3.3.3.3: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *> 2.2.2.2/32 23.1.1.2 0 0 200i *>i 6.6.6.6/32 5.5.5.5 0 100 0 400i 8.在各个站点进行测试<R1>display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 9 Routes : 9 Destination/Mask Proto Pre Cost Flags NextHop Interface 1.1.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0 7.7.7.7/32 EBGP 255 0 D 13.1.1.3 GigabitEthernet0/0/0 13.1.1.0/24 Direct 0 0 D 13.1.1.1 GigabitEthernet0/0/0 13.1.1.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 13.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0<R1>ping -a 1.1.1.1 7.7.7.7 PING 7.7.7.7: 56 data bytes, press CTRL_C to break Reply from 7.7.7.7: bytes=56 Sequence=1 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=2 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=3 ttl=252 time=70 ms Reply from 7.7.7.7: bytes=56 Sequence=4 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=5 ttl=252 time=30 ms --- 7.7.7.7 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 30/44/70 ms其他连通性略 在PE2上面的配置
bgp 500 peer 3.3.3.3 as-number 500 peer 3.3.3.3 connect-interface LoopBack0 # ipv4-family unicast undo synchronization peer 3.3.3.3 enable peer 3.3.3.3 next-hop-local # ipv4-family ***v4 policy ***-target peer 3.3.3.3 enable #检查MP-BGP的关系
<R1>display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 9 Routes : 9 Destination/Mask Proto Pre Cost Flags NextHop Interface 1.1.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0 7.7.7.7/32 EBGP 255 0 D 13.1.1.3 GigabitEthernet0/0/0 13.1.1.0/24 Direct 0 0 D 13.1.1.1 GigabitEthernet0/0/0 13.1.1.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 13.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0<R1>ping -a 1.1.1.1 7.7.7.7 PING 7.7.7.7: 56 data bytes, press CTRL_C to break Reply from 7.7.7.7: bytes=56 Sequence=1 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=2 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=3 ttl=252 time=70 ms Reply from 7.7.7.7: bytes=56 Sequence=4 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=5 ttl=252 time=30 ms --- 7.7.7.7 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 30/44/70 ms在R3上面查看我们***V4的路由表 R3上面都会学习到各个站点的VRF的***V4路由，但是R3这边他会根据各个VRF路由里面所携带的RD和RT参数，R3就是把各自的路由放入到各自的***-Instance当中
[R3]display bgp ***v4 all routing-table BGP Local router ID is 3.3.3.3 Status codes: * - valid, > - best, d - damped, h - history, i - internal, s - suppressed, S - Stale Origin : i - IGP, e - EGP, ? - incomplete Total number of routes from all PE: 4 Route Distinguisher: 1:3 Network NextHop MED LocPrf PrefVal Path/Ogn *> 1.1.1.1/32 13.1.1.1 0 0 100i Route Distinguisher: 2:3 Network NextHop MED LocPrf PrefVal Path/Ogn *> 2.2.2.2/32 23.1.1.2 0 0 200i Route Distinguisher: 6:5 Network NextHop MED LocPrf PrefVal Path/Ogn *>i 6.6.6.6/32 5.5.5.5 0 100 0 400i Route Distinguisher: 7:5 Network NextHop MED LocPrf PrefVal Path/Ogn *>i 7.7.7.7/32 5.5.5.5 0 100 0 300i ***-Instance ***13, Router ID 3.3.3.3: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *> 1.1.1.1/32 13.1.1.1 0 0 100i *>i 7.7.7.7/32 5.5.5.5 0 100 0 300i ***-Instance ***23, Router ID 3.3.3.3: Total Number of Routes: 2 Network NextHop MED LocPrf PrefVal Path/Ogn *> 2.2.2.2/32 23.1.1.2 0 0 200i *>i 6.6.6.6/32 5.5.5.5 0 100 0 400i 8.在各个站点进行测试
<R1>display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 9 Routes : 9 Destination/Mask Proto Pre Cost Flags NextHop Interface 1.1.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0 7.7.7.7/32 EBGP 255 0 D 13.1.1.3 GigabitEthernet0/0/0 13.1.1.0/24 Direct 0 0 D 13.1.1.1 GigabitEthernet0/0/0 13.1.1.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 13.1.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0<R1>ping -a 1.1.1.1 7.7.7.7 PING 7.7.7.7: 56 data bytes, press CTRL_C to break Reply from 7.7.7.7: bytes=56 Sequence=1 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=2 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=3 ttl=252 time=70 ms Reply from 7.7.7.7: bytes=56 Sequence=4 ttl=252 time=40 ms Reply from 7.7.7.7: bytes=56 Sequence=5 ttl=252 time=30 ms --- 7.7.7.7 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max = 30/44/70 ms其他连通性略
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