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MPLS解决BGP路由黑洞

时间：2023-09-05 23:01:08浏览次数：33  
标签：peer default MPLS BGP 255.255 user interface local 路由

MPLS解决BGP路由黑洞_ci

需求

1、as200TCP连接采用isis

2、r3不配置BGP

3、在R1上发布1.1.1.1，在r5上发布5.5.5.5

4、通过route recursive-lookup tunnel，解决BGP黑洞

配置

R1

<r1>display current-configuration  

[V200R003C00]

#

sysname r1

#

snmp-agent local-engineid 800007DB03000000000000

snmp-agent  

#

clock timezone China-Standard-Time minus 08:00:00

#

portal local-server load flash:/portalpage.zip

#

drop illegal-mac alarm

#

wlan ac-global carrier id other ac id 0

#

set cpu-usage threshold 80 restore 75

#

aaa  

authentication-scheme default

authorization-scheme default

accounting-scheme default

domain default  

domain default_admin  

local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$

local-user admin service-type http

#

firewall zone Local

priority 15

#

interface GigabitEthernet0/0/0

ip address 12.1.1.1 255.255.255.0  

#

interface GigabitEthernet0/0/1

#

interface GigabitEthernet0/0/2

#

interface NULL0

#

interface LoopBack0

ip address 1.1.1.1 255.255.255.255  

#

bgp 100

router-id 1.1.1.1

undo default ipv4-unicast

peer 12.1.1.2 as-number 200  

#

ipv4-family unicast

 undo synchronization

 network 1.1.1.1 255.255.255.255  

 peer 12.1.1.2 enable

#

user-interface con 0

authentication-mode password

idle-timeout 0 0

user-interface vty 0 4

user-interface vty 16 20

#

wlan ac

#

return

<r1>

R2

<r2>display current-configuration  

[V200R003C00]

#

sysname r2

#

snmp-agent local-engineid 800007DB03000000000000

snmp-agent  

#

clock timezone China-Standard-Time minus 08:00:00

#

portal local-server load flash:/portalpage.zip

#

drop illegal-mac alarm

#

wlan ac-global carrier id other ac id 0

#

set cpu-usage threshold 80 restore 75

#

mpls lsr-id 2.2.2.2

mpls

#

mpls ldp

#

#

aaa  

authentication-scheme default

authorization-scheme default

accounting-scheme default

domain default  

domain default_admin  

local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$

local-user admin service-type http

#

isis 100

is-level level-2

network-entity 49.0001.0020.0200.2002.00

#

firewall zone Local

priority 15

#

interface GigabitEthernet0/0/0

ip address 12.1.1.2 255.255.255.0  

isis enable 100

#

interface GigabitEthernet0/0/1

ip address 23.1.1.2 255.255.255.0  

isis enable 100

mpls

mpls ldp

#

interface GigabitEthernet0/0/2

#

interface NULL0

#

interface LoopBack0

ip address 2.2.2.2 255.255.255.255  

isis enable 100

#

bgp 200

router-id 2.2.2.2

undo default ipv4-unicast

peer 4.4.4.4 as-number 200  

peer 4.4.4.4 connect-interface LoopBack0

peer 12.1.1.1 as-number 100  

#

ipv4-family unicast

 undo synchronization

 peer 4.4.4.4 enable

 peer 4.4.4.4 next-hop-local  

 peer 12.1.1.1 enable

#

route recursive-lookup tunnel

#

user-interface con 0

authentication-mode password

idle-timeout 0 0

user-interface vty 0 4

user-interface vty 16 20

#

wlan ac

#

return

<r2>

R3

<r3>display current-configuration  

[V200R003C00]

#

sysname r3

#

snmp-agent local-engineid 800007DB03000000000000

snmp-agent  

#

clock timezone China-Standard-Time minus 08:00:00

#

portal local-server load flash:/portalpage.zip

#

drop illegal-mac alarm

#

wlan ac-global carrier id other ac id 0

#

set cpu-usage threshold 80 restore 75

#

mpls lsr-id 3.3.3.3

mpls

#

mpls ldp

#

#

aaa  

authentication-scheme default

authorization-scheme default

accounting-scheme default

domain default  

domain default_admin  

local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$

local-user admin service-type http

#

isis 100

is-level level-2

network-entity 49.0001.0030.0300.3003.00

#

firewall zone Local

priority 15

#

interface GigabitEthernet0/0/0

ip address 23.1.1.3 255.255.255.0  

isis enable 100

mpls

mpls ldp

#

interface GigabitEthernet0/0/1

ip address 34.1.1.3 255.255.255.0  

isis enable 100

mpls

mpls ldp

#

interface GigabitEthernet0/0/2

#

interface NULL0

#

interface LoopBack0

ip address 3.3.3.3 255.255.255.255  

isis enable 100

#

user-interface con 0

authentication-mode password

idle-timeout 0 0

user-interface vty 0 4

user-interface vty 16 20

#

wlan ac

#

return

<r3>

R4

<r4>display current-configuration  

[V200R003C00]

#

sysname r4

#

snmp-agent local-engineid 800007DB03000000000000

snmp-agent  

#

clock timezone China-Standard-Time minus 08:00:00

#

portal local-server load flash:/portalpage.zip

#

drop illegal-mac alarm

#

wlan ac-global carrier id other ac id 0

#

set cpu-usage threshold 80 restore 75

#

mpls lsr-id 4.4.4.4

mpls

#

mpls ldp

#

#

aaa  

authentication-scheme default

authorization-scheme default

accounting-scheme default

domain default  

domain default_admin  

local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$

local-user admin service-type http

#

isis 100

is-level level-2

network-entity 49.0001.0040.0400.4004.00

#

firewall zone Local

priority 15

#

interface GigabitEthernet0/0/0

ip address 34.1.1.4 255.255.255.0  

isis enable 100

isis dis-priority 100

mpls

mpls ldp

#

interface GigabitEthernet0/0/1

ip address 45.1.1.4 255.255.255.0  

isis enable 100

#

interface GigabitEthernet0/0/2

#

interface NULL0

#

interface LoopBack0

ip address 4.4.4.4 255.255.255.255  

isis enable 100

#

bgp 200

router-id 4.4.4.4

undo default ipv4-unicast

peer 2.2.2.2 as-number 200  

peer 2.2.2.2 connect-interface LoopBack0

peer 45.1.1.5 as-number 300  

#

ipv4-family unicast

 undo synchronization

 peer 2.2.2.2 enable

 peer 2.2.2.2 next-hop-local  

 peer 45.1.1.5 enable

#

route recursive-lookup tunnel

#

user-interface con 0

authentication-mode password

idle-timeout 0 0

user-interface vty 0 4

user-interface vty 16 20

#

wlan ac

#

return

<r4>

R5

<r5>display current-configuration  

[V200R003C00]

#

sysname r5

#

snmp-agent local-engineid 800007DB03000000000000

snmp-agent  

#

clock timezone China-Standard-Time minus 08:00:00

#

portal local-server load flash:/portalpage.zip

#

drop illegal-mac alarm

#

wlan ac-global carrier id other ac id 0

#

set cpu-usage threshold 80 restore 75

#

aaa  

authentication-scheme default

authorization-scheme default

accounting-scheme default

domain default  

domain default_admin  

local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$

local-user admin service-type http

#

firewall zone Local

priority 15

#

interface GigabitEthernet0/0/0

ip address 45.1.1.5 255.255.255.0  

#

interface GigabitEthernet0/0/1

#

interface GigabitEthernet0/0/2

#

interface NULL0

#

interface LoopBack0

ip address 5.5.5.5 255.255.255.255  

#

bgp 300

undo default ipv4-unicast

peer 45.1.1.4 as-number 200  

#

ipv4-family unicast

 undo synchronization

 network 5.0.0.0  

 network 5.5.5.5 255.255.255.255  

 peer 45.1.1.4 enable

#

user-interface con 0

authentication-mode password

idle-timeout 0 0

user-interface vty 0 4

user-interface vty 16 20

#

wlan ac

#

return

<r5>

特别注意事项，

MPLS解决BGP路由黑洞_Standard_02

以上接口都需要配置为isis，IBGP采用环回接口建立邻居peer

MPLS解决BGP路由黑洞_ci_03

这两台设备需要配置：peer 4.4.4.4 next-hop-local，根据BGP水平分割的原理，只能传给相邻设备，不能传送给间隔设别，同时两端还需要配置route recursive-lookup tunnel

标签：peer,default,MPLS,BGP,255.255,user,interface,local,路由
From： https://blog.51cto.com/u_13560030/7380872

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