Huawei RIPv2: Route Aggregation ve Kimlik Doğrulama

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Huawei Router Cihazlarında RIPv2 Yapılandırması, Ağ Topolojisi ve Doğrulama

Bu çalışmada üç Huawei router cihazı (Router1, Router2, Router3) arasında RIPv2 yönlendirme protokolü konfigürasyonu, loopback adreslerin yapılandırılması, route özetleme (manual route aggregation) ve authentication (kimlik doğrulama) ayarlarının nasıl yapıldığı uygulamalı olarak gösterilmiştir.

---

1. Temel IP ve Loopback Yapılandırması

Router1:

sysname Router1
interface GigabitEthernet 0/0/0
 ip address 10.0.13.1 255.255.255.0
interface LoopBack0
 ip address 10.0.1.1 255.255.255.0

Router2:

sysname Router2
interface GigabitEthernet 0/0/0
 ip address 10.0.13.2 255.255.255.0
interface GigabitEthernet 0/0/1
 ip address 10.0.12.2 255.255.255.0
interface LoopBack0
 ip address 10.0.2.2 255.255.255.0

Router3:

sysname Router3
interface GigabitEthernet 0/0/1
 ip address 10.0.12.3 255.255.255.0
interface LoopBack0
 ip address 10.0.3.3 255.255.255.0

---

2. RIPv2 Konfigürasyonu

Her üç router’da RIPv2 aktif edilip ortak network alanı tanımlandı:

[RouterX]rip 1
[RouterX-rip-1]version 2
[RouterX-rip-1]network 10.0.0.0

---

3. Ek Loopback Arayüzleri ve Anons

Router3 üzerinde dört adet ek Loopback interface tanımlandı:

interface LoopBack2
 ip address 172.16.0.1 255.255.255.0
interface LoopBack3
 ip address 172.16.1.1 255.255.255.0
interface LoopBack4
 ip address 172.16.2.1 255.255.255.0
interface LoopBack5
 ip address 172.16.3.1 255.255.255.0

Daha sonra bu networkler RIPv2 üzerinden 172.16.0.0 ile anons edildi:

[Router3]rip
[Router3-rip-1]network 172.16.0.0

---

4. Route Tabloları ve Doğrulama

Router1‘in routing tablosunda, Router3’ten gelen tüm loopback adreslerinin başarıyla öğrenildiği görüldü.

display ip routing-table
...
172.16.0.0/24 RIP
172.16.1.0/24 RIP
172.16.2.0/24 RIP
172.16.3.0/24 RIP

ping 172.16.0.1 ile bağlantı doğrulandı.

---

5. Manual Route Aggregation (Route Özetleme)

Router2 üzerinde dört alt ağı özetlemek için aşağıdaki konfigürasyon uygulandı:

[Router2]interface GigabitEthernet 0/0/0
[Router2-GigabitEthernet0/0/0]rip summary-address 172.16.0.0 255.255.0.0

Bu sayede Router1, tüm 172.16.x.x networklerini tek bir 172.16.0.0/16 olarak aldı.

---

6. RIPv2 Authentication Yapılandırması

Plain Text Authentication (Router1 ↔ Router2)

[Router1]interface GigabitEthernet 0/0/0
[Router1-GE0/0/0]rip authentication-mode simple huawei

[Router2]interface GigabitEthernet 0/0/0
[Router2-GE0/0/0]rip authentication-mode simple huawei

MD5 Authentication (Router2 ↔ Router3)

[Router2]interface GigabitEthernet 0/0/1
[Router2-GE0/0/1]rip authentication-mode md5 usual huawei

[Router3]interface GigabitEthernet 0/0/1
[Router3-GE0/0/1]rip authentication-mode md5 usual huawei

Yanlış parola kullanımı durumunda route’lar kaybolduğu gözlemlendi. Parola düzeltildiğinde tüm yönlendirme tekrar aktif hale geldi.

---

7. Son Konfigürasyonların Kontrolü

Tüm router’ların display current-configuration çıktılarında IP yapılandırmaları, RIP ayarları, summary ve authentication konfigürasyonları eksiksiz olarak görülmüştür.

Özetle:

• IP adresleri ve loopback’ler yapılandırıldı.
• RIPv2 ile dinamik routing sağlandı.
• Route özetleme yapıldı.
• Authentication ile güvenlik artırıldı.
• Tüm yapılandırma doğrulandı ve aktif olarak çalıştı.

Router1 in routing tablosuna bakarak Router3 de oluşturduğumuz loopBacklar’in anons edildiğini kontrol edelim.
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 13 Routes : 13
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.3.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
10.0.12.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.13.0/24 Direct 0 0 D 10.0.13.1 GigabitEthernet0/0/0
10.0.13.1/32 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 InLoopBack0
172.16.0.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
172.16.1.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
172.16.2.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
172.16.3.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
Yukarıda işaretli yerlere baktığımızda 172.16.0.0 olarak anons ettiğimiz network’ün ayrı ayrı spesifik olarak öğrendiğini görüntülüyoruz.
172.16.0.0 networkünün Router1 de kontrolünü yapalım.
ping 172.16.0.1
PING 172.16.0.1: 56 data bytes, press CTRL_C to break
Reply from 172.16.0.1: bytes=56 Sequence=1 ttl=254 time=60 ms
Reply from 172.16.0.1: bytes=56 Sequence=2 ttl=254 time=80 ms
Reply from 172.16.0.1: bytes=56 Sequence=3 ttl=254 time=70 ms
Reply from 172.16.0.1: bytes=56 Sequence=4 ttl=254 time=90 ms
Reply from 172.16.0.1: bytes=56 Sequence=5 ttl=254 time=30 ms
— 172.16.0.1 ping statistics —
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/66/90 ms
4.Router2’de RIP manual route aggregation yapalım.
Rip summary-address komutunu kullanarak Router2 üzerinde RIP route aggrigation yapalım. 4 network’ü(172.16.0.0/24, 172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24) aggregate ederek tek bir route olarak (172.16.0.0/16) yazalım.
[Router2]interface GigabitEthernet 0/0/0
[Router2-GigabitEthernet0/0/0]rip summary-address 172.16.0.0 255.255.0.0
Router1’de routing tablosuna bakalım.
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 10 Routes : 10
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.3.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
10.0.12.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.13.0/24 Direct 0 0 D 10.0.13.1 GigabitEthernet0/0/0
10.0.13.1/32 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 InLoopBack0
172.16.0.0/16 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0

Tabloya baktığımızda, artık 4 ayrı networkümüz aggregate olmuş ve tek bir satır olarak görünmekte.
172.16.0.0 networkünün hala çalışıyor olduğundan emin olalım.
ping 172.16.0.1
PING 172.16.0.1: 56 data bytes, press CTRL_C to break
Reply from 172.16.0.1: bytes=56 Sequence=1 ttl=254 time=40 ms
Reply from 172.16.0.1: bytes=56 Sequence=2 ttl=254 time=30 ms
Reply from 172.16.0.1: bytes=56 Sequence=3 ttl=254 time=80 ms
Reply from 172.16.0.1: bytes=56 Sequence=4 ttl=254 time=30 ms
Reply from 172.16.0.1: bytes=56 Sequence=5 ttl=254 time=70 ms
— 172.16.0.1 ping statistics —
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 30/50/80 ms
Aggregate ederek route tablomuzu küçültmekle birlikte bağlantımızda hiçbir kayıp yaşamadık.
5.RIP authentication(kriptolama) konfigrasyonu yapalım.
Router1 ve Router2 arasını plain text authentication, Router2 ve Router3 arasını ise MD5authentication konfigüre edelim. Passwordleri ise huawei verelim.
[Router1]interface GigabitEthernet 0/0/0
[Router1-GigabitEthernet0/0/0]rip authentication-mode simple huawei
[Router2]interface GigabitEthernet 0/0/0
[Router2-GigabitEthernet0/0/0]rip authentication-mode simple huawei
[Router2-GigabitEthernet0/0/0]quit
[Router2]interface GigabitEthernet 0/0/1
[Router2-GigabitEthernet0/0/1]rip authentication-mode md5 usual huawei
[Router3]interface GigabitEthernet 0/0/1
[Router3-GigabitEthernet0/0/1]rip authentication-mode md5 usual huawei
Konfigurasyonu tamamladıktan sonra routeların etkilenmediğini kontrol edelim.
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 10 Routes : 10
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.3.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
10.0.12.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.13.0/24 Direct 0 0 D 10.0.13.1 GigabitEthernet0/0/0
10.0.13.1/32 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 InLoopBack0
172.16.0.0/16 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.13.1 GigabitEthernet0/0/0
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.3.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
10.0.12.0/24 Direct 0 0 D 10.0.12.2 GigabitEthernet0/0/1
10.0.12.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1
10.0.13.0/24 Direct 0 0 D 10.0.13.2 GigabitEthernet0/0/0
10.0.13.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0
27.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0
127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
172.16.0.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
172.16.1.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
172.16.2.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
172.16.3.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 17 Routes : 17
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 2 D 10.0.12.2 GigabitEthernet0/0/1
10.0.2.0/24 RIP 100 1 D 10.0.12.2 GigabitEthernet0/0/1
10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0
10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.12.0/24 Direct 0 0 D 10.0.12.3 GigabitEthernet0/0/1
10.0.12.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1
10.0.13.0/24 RIP 100 1 D 10.0.12.2 GigabitEthernet0/0/1
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 InLoopBack0
172.16.0.0/24 Direct 0 0 D 172.16.0.1 LoopBack2
172.16.0.1/32 Direct 0 0 D 127.0.0.1 LoopBack2
172.16.1.0/24 Direct 0 0 D 172.16.1.1 LoopBack3
172.16.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack3
172.16.2.0/24 Direct 0 0 D 172.16.2.1 LoopBack4
172.16.2.1/32 Direct 0 0 D 127.0.0.1 LoopBack4
172.16.3.0/24 Direct 0 0 D 172.16.3.1 LoopBack5
172.16.3.1/32 Direct 0 0 D 127.0.0.1 LoopBack5
6.RIPv2 authentication oluşturalım ve inceleyelim.
RIPv2 için Router2 üzerinde g0/0/0 password’unu huawei2 yapalım.
[Router2]interface GigabitEthernet 0/0/0
[Router2-GigabitEthernet0/0/0]rip authentication-mode simple huawei2
Router1’in routing tablosuna bakalım
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 6 Routes : 6
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.13.0/24 Direct 0 0 D 10.0.13.1 GigabitEthernet0/0/0
10.0.13.1/32 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 InLoopBack0
Router1 ve Router2 farklı RIP authentication parolalarına sahip olduğu için, Router1, Router2 üzerinden hiçbir network’ü öğrenemiyor
Router2 üzerinde G0/0/0 için authentication parolasını düzeltelim.
[Router2]interface GigabitEthernet 0/0/0
[Router2-GigabitEthernet0/0/0]rip authentication-mode simple huawei
Router2 g0/0/1 şifresini plain text olarak modunu değiştirelim.
[Router2]interface GigabitEthernet 0/0/1
[Router2-GigabitEthernet0/0/1]rip authentication-mode simple huawei
Router3’ün routing tablosunu görüntüleyelim.
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0
10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.12.0/24 Direct 0 0 D 10.0.12.3 GigabitEthernet0/0/1
10.0.12.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1
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 InLoopBack0
172.16.0.0/24 Direct 0 0 D 172.16.0.1 LoopBack2
172.16.0.1/32 Direct 0 0 D 127.0.0.1 LoopBack2
172.16.1.0/24 Direct 0 0 D 172.16.1.1 LoopBack3
172.16.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack3
172.16.2.0/24 Direct 0 0 D 172.16.2.1 LoopBack4
172.16.2.1/32 Direct 0 0 D 127.0.0.1 LoopBack4
172.16.3.0/24 Direct 0 0 D 172.16.3.1 LoopBack5
172.16.3.1/32 Direct 0 0 D 127.0.0.1 LoopBack5
Router2 ve Router3 farklı authentication modlarında olduğu için, Router3, Router2 üzerinden hiçbir network’ü öğrenemiyor.
[Router2]interface GigabitEthernet 0/0/1
[Router2-GigabitEthernet0/0/1]rip authentication-mode md5 usual huawei
Authentication modlarını MD5 olarak düzenleyelim.
Düzenlemeden sonra, Router1, Router2 ve Router3 route tablolarının geri gelip gelmedini kontrol edelim.
Note: RIP updateleri periyodik olarak gönderilir ve zaman alabilir.
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 10 Routes : 10
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 Direct 0 0 D 10.0.1.1 LoopBack0
10.0.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.2.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.3.0/24 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
10.0.12.0/24 RIP 100 1 D 10.0.13.2 GigabitEthernet0/0/0
10.0.13.0/24 Direct 0 0 D 10.0.13.1 GigabitEthernet0/0/0
10.0.13.1/32 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 InLoopBack0
172.16.0.0/16 RIP 100 2 D 10.0.13.2 GigabitEthernet0/0/0
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 14 Routes : 14
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 1 D 10.0.13.1 GigabitEthernet0/0/0
10.0.2.0/24 Direct 0 0 D 10.0.2.2 LoopBack0
10.0.2.2/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.3.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
10.0.12.0/24 Direct 0 0 D 10.0.12.2 GigabitEthernet0/0/1
10.0.12.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1
10.0.13.0/24 Direct 0 0 D 10.0.13.2 GigabitEthernet0/0/0
10.0.13.2/32 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 InLoopBack0
172.16.0.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
172.16.1.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
172.16.2.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
172.16.3.0/24 RIP 100 1 D 10.0.12.3 GigabitEthernet0/0/1
display ip routing-table
Route Flags: R – relay, D – download to fib
——————————————————————————
Routing Tables: PublicDestinations : 17 Routes : 17
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.0.1.0/24 RIP 100 2 D 10.0.12.2 GigabitEthernet0/0/1
10.0.2.0/24 RIP 100 1 D 10.0.12.2 GigabitEthernet0/0/1
10.0.3.0/24 Direct 0 0 D 10.0.3.3 LoopBack0
10.0.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0
10.0.12.0/24 Direct 0 0 D 10.0.12.3 GigabitEthernet0/0/1
10.0.12.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1
10.0.13.0/24 RIP 100 1 D 10.0.12.2 GigabitEthernet0/0/1
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 InLoopBack0
172.16.0.0/24 Direct 0 0 D 172.16.0.1 LoopBack2
172.16.0.1/32 Direct 0 0 D 127.0.0.1 LoopBack2
172.16.1.0/24 Direct 0 0 D 172.16.1.1 LoopBack3
172.16.1.1/32 Direct 0 0 D 127.0.0.1 LoopBack3
172.16.2.0/24 Direct 0 0 D 172.16.2.1 LoopBack4
172.16.2.1/32 Direct 0 0 D 127.0.0.1 LoopBack4
172.16.3.0/24 Direct 0 0 D 172.16.3.1 LoopBack5
172.16.3.1/32 Direct 0 0 D 127.0.0.1 LoopBack5
FİNAL….
display current-configuration
#
sysname Router1
#
interface GigabitEthernet0/0/0
ip address 10.0.13.1 255.255.255.0
rip authentication-mode simple cipher OOCM4m($F4ajUn1vMEIBNUw
#
interface LoopBack0
ip address 10.0.1.1 255.255.255.0
#
rip 1
version 2
network 10.0.0.0
#
user-interface con 0
user-interface vty 0 4
#
Return
display current-configuration
#
sysname Router2
#
interface GigabitEthernet0/0/0
ip address 10.0.13.2 255.255.255.0
rip authentication-mode simple cipher OOCM4m($F4ajUn1vMEIBNUw
rip summary-address 172.16.0.0 255.255.0.0
#
interface GigabitEthernet0/0/1
ip address 10.0.12.2 255.255.255.0
rip authentication-mode md5 usual }%N+U:T_gD@X,k6.E\Z,1S;#
#
interface LoopBack0
ip address 10.0.2.2 255.255.255.0
#
rip 1
version 2
network 10.0.0.0
#
user-interface con 0
user-interface vty 16 20
#
Return
display current-configuration
#
sysname Router3
#
interface GigabitEthernet0/0/1
ip address 10.0.12.3 255.255.255.0
rip authentication-mode md5 usual i<“hQM;L+H3@9_G-B0Y2<YN##interface NULL0
#
interface LoopBack0
ip address 10.0.3.3 255.255.255.0
#
interface LoopBack2
ip address 172.16.0.1 255.255.255.0
#
interface LoopBack3
ip address 172.16.1.1 255.255.255.0
#
interface LoopBack4
ip address 172.16.2.1 255.255.255.0
#
interface LoopBack5
ip address 172.16.3.1 255.255.255.0
#
rip 1
version 2
network 10.0.0.0
network 172.16.0.0
#
user-interface con 0
user-interface vty 0 4
#
return