RK 2021/22 - LDN6 BGP¶

Oddaja: ucilnica.fri.uni-lj.si
Zapiski: rkvaje.lrk.si

Naslovni prostori

Ker naloga zahteva uporabo naslovnih prostorov (subnetov) ki so definirani relativno na tvojo lastno vpisno stevilko, jih le-teh ne pozabi posodobiti.

Ustrezna podomrežja v vsakem AS (ta bomo objavljali preko BGPja) so definirana tako, da vzamete svojo vpisno številko (XYZQWABC) in uporabite njene zadnje 3 številke na mestih, označenih z A, B, C. Pri tem definirajte tudi ustrezne maske!

10.A.0.0/??
192.168.B.0/??
172.16.C.0/??

Na primer, če je vaša vpisna številka 12345678, potem bi to generiralo naslednja omrežja (A=6, B=7, C=8):

10.6.0.0/??
192.168.7.0/??
172.16.8.0/??

Omrezja¶

AS65531		AS65532		AS65533
Subnet	`10.3.0.0/24`	Subnet	`192.168.1.0/24`	Subnet	`172.16.0.0/24`
r1.eth0	`10.3.0.1/24`	r2.eth0	`192.168.1.1/24`	r3.eth0	`172.16.0.1/24`
pc1.eth0	`10.3.0.2/24`	pc2.eth0	`192.168.1.2/24`	pc3.eth0	`172.16.0.2/24`


Subnet	`1.1.1.0/24`
cfnet-1.2	`1.1.1.0/30`	cfnet-2.3	`1.1.1.4/30`	cfnet-3.1	`1.1.1.8/30`
r1.eth1	`1.1.1.1/30`	r2.eth1	`1.1.1.5/30`	r3.eth1	`1.1.1.9/30`
r2.eth2	`1.1.1.2/30`	r3.eth2	`1.1.1.6/30`	r1.eth2	`1.1.1.10/30`

Konfiguracija¶

Breakline na koncu code blockov - ki se ga sicer ne vidi, a je prisoten v kopirani vsebini, ce kliknes na "copy" gumb - je intentional, saj omogoca, da se, ko kopiras ter direktno prilepis vsebino v terminal, izvede tudi zadnji ukaz.

PC1

stage 1: Configure networking

ip addr add 10.3.0.2/24 broadcast + dev eth0
ip route add default via 10.3.0.1 dev eth0

stage 2: confirm networking

ip r
traceroute 192.168.1.2
traceroute 172.16.0.2

PC2

stage 1: Configure networking

ip addr add 192.168.1.2/24 broadcast + dev eth0
ip route add default via 192.168.1.1 dev eth0

stage 2: confirm networking

ip r
traceroute 10.3.0.2
traceroute 172.16.0.2

PC3

stage 1: Configure networking

ip addr add 172.16.0.2/24 broadcast + dev eth0
ip route add default via 172.16.0.1 dev eth0

stage 2: confirm networking

ip r
traceroute 10.3.0.2
traceroute 192.168.1.2

R1

stage 1: Configure networking and BGP

configure
set interfaces ethernet eth0 address 10.3.0.1/30
set interfaces ethernet eth1 address 1.1.1.1/30
set interfaces ethernet eth2 address 1.1.1.10/30
set protocols bgp 65531 neighbor 1.1.1.2 remote-as '65532'
set protocols bgp 65531 neighbor 1.1.1.9 remote-as '65533'
set protocols bgp 65531 parameters router-id 10.3.0.1
set protocols bgp 65531 network 10.3.0.0/30
commit
save

stage 2: confirm BGP

exit
sleep 30
show ip bgp summary
show ip route

R2

stage 1: Configure networking and BGP

configure
set interfaces ethernet eth0 address 192.168.1.1/30
set interfaces ethernet eth1 address 1.1.1.5/30
set interfaces ethernet eth2 address 1.1.1.2/30
set protocols bgp 65532 neighbor 1.1.1.1 remote-as '65531'
set protocols bgp 65532 neighbor 1.1.1.6 remote-as '65533'
set protocols bgp 65532 parameters router-id 192.168.1.1
set protocols bgp 65532 network 192.168.1.0/30
commit
save

stage 2: confirm BGP

exit
sleep 30
show ip bgp summary
show ip route

R3

stage 1: Configure networking and BGP

configure
set interfaces ethernet eth0 address 172.16.0.1/30
set interfaces ethernet eth1 address 1.1.1.9/30
set interfaces ethernet eth2 address 1.1.1.6/30
set protocols bgp 65533 neighbor 1.1.1.10 remote-as '65531'
set protocols bgp 65533 neighbor 1.1.1.5 remote-as '65532'
set protocols bgp 65533 parameters router-id 172.16.0.1
set protocols bgp 65533 network 172.16.0.0/30
commit
save

stage 2: confirm BGP

exit
sleep 30
show ip bgp summary
show ip route

Topografija¶

Photo

Zadnja posodobitev: April 17, 2022