BLOCK-BAD-ADDRESSES out RTBconfig-router#redistribute ospf 1 match internal metric 50 RTBconfig-router#redistribute static Ta có thể cấu hình cho RTB chỉ chèn một số mạng vào BGP thôi
Trang 1BLOCK-BAD-ADDRESSES out
RTB(config-router)#redistribute ospf 1 match
internal metric 50
RTB(config-router)#redistribute static
Ta có thể cấu hình cho RTB chỉ chèn một số mạng vào BGP thôi Còn tất cả các route khác sẻ không được chèn vào BGP nên không đựoc quảng cáo ra ben ngoài khỏi AS
RTB(config)#router bgp 200
RTB(config-router)#neighbor 10.1.1.2 remote-as 100 RTB(config-router)#network 192.168.1.0
RTB(config-router)#network 192.168.2.0
- Trong trường hợp này chỉ có mạng 192.168.1.0 và 192.168.2.0 là được chèn vào BGP thôi
Cấu hình Thực tế
1 Cấu hình cho sơ đồ 1
Error!
- Theo sơ đồ này thì ta thấy R2, R3, R4 quan hệ IBGP với nhau thuộc AS100, còn R1 thuộc AS300, R6 thuộc AS400, R5 thuộc AS200
cấu hình cho từng router một:
R1#show run
Building configuration
Current configuration:
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname R1
memory-size iomem 10
ip subnet-zero
no ip domain-lookup
interface Loopback0
ip address 192.168.250.1 255.255.255.0
no ip directed-broadcast
interface Loopback1
ip address 192.168.1.213 255.255.255.252
no ip directed-broadcast
Trang 2interface Loopback12
no ip address
no ip directed-broadcast
interface Ethernet0/0
no ip address
no ip directed-broadcast
shutdown
interface Serial0/0
ip address 192.168.1.210 255.255.255.252
no ip directed-broadcast
no ip mroute-cache
no fair-queue
clockrate 64000
router bgp 300
network 192.168.1.212
network 192.168.250.0
neighbor 192.168.1.209 remote-as 100
no auto-summary
ip classless
line con 0
logging synchronous
transport input none
line aux 0
line vty 0 4
no scheduler allocate
end
R2#show runn
Building configuration
Current configuration:
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname R2
ip subnet-zero
no ip domain-lookup
interface Ethernet0
ip address 192.168.1.226 255.255.255.252 interface Serial0
ip address 192.168.1.221 255.255.255.252
Trang 3no fair-queue
clockrate 64000
interface Serial1
ip address 192.168.1.209 255.255.255.252 router bgp 100
no synchronization
network 192.168.1.224 mask 255.255.255.252 neighbor 192.168.1.197 remote-as 100
neighbor 192.168.1.210 remote-as 300
neighbor 192.168.1.222 remote-as 100
neighbor 192.168.1.225 remote-as 200
ip classless
no ip http server
line con 0
logging synchronous
transport input none
line aux 0
line vty 0 4
no scheduler allocate
end
R3#show runn
Building configuration
Current configuration : 891 bytes
version 12.2
no parser cache
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname R3
logging rate-limit console 10 except errors memory-size iomem 10
ip subnet-zero
no ip domain-lookup
no ip dhcp-client network-discovery
call rsvp-sync
interface Ethernet0/0
no ip address
shutdown
half-duplex
Trang 4interface Serial0/0
ip address 192.168.1.222 255.255.255.252
no fair-queue
interface Serial0/1
ip address 192.168.1.198 255.255.255.252 router bgp 100
no synchronization
bgp log-neighbor-changes
network 192.168.1.196 mask 255.255.255.252 network 192.168.1.220 mask 255.255.255.252 neighbor 192.168.1.197 remote-as 100
neighbor 192.168.1.221 remote-as 100
ip classless
ip http server
voice-port 1/1/0
voice-port 1/1/1
dial-peer cor custom
line con 0
logging synchronous
line aux 0
line vty 5 15
end
R4#show runn
Current configuration : 904 bytes
version 12.2
service timestamps debug datetime msec service timestamps log datetime msec
no service password-encryption
hostname R4
logging queue-limit 100
ip subnet-zero
no ip domain lookup
mpls ldp logging neighbor-changes
no voice hpi capture buffer
no voice hpi capture destination
mta receive maximum-recipients 0
interface Ethernet0/0
ip address 192.168.1.106 255.255.255.252 half-duplex
interface Serial0/0
Trang 5ip address 192.168.1.197 255.255.255.252 clockrate 64000
interface Serial0/1
no ip address
router bgp 100
no synchronization
bgp log-neighbor-changes
network 192.168.1.204 mask 255.255.255.252 neighbor 192.168.1.198 remote-as 100
neighbor 192.168.1.205 remote-as 400
no auto-summary
no ip http server
ip classless
call rsvp-sync
mgcp profile default
dial-peer cor custom
line con 0
logging synchronous
line aux 0
line vty 0 4
end
R5#show runn
Building configuration
Current configuration : 1080 bytes
version 12.2
service timestamps debug datetime msec service timestamps log datetime msec
no service password-encryption
hostname R5
logging queue-limit 100
memory-size iomem 10
ip subnet-zero
no ip domain lookup
mpls ldp logging neighbor-changes
no voice hpi capture buffer
no voice hpi capture destination
mta receive maximum-recipients 0
interface Loopback0
ip address 192.168.100.1 255.255.255.0