rutare

Gabos Denes gabosdenes la gmail.com
Sâm Oct 20 21:52:21 BST 2007


am un singur lan in spate, un router si doi provideri, am rezolvat intre 
timp, multumesc de ajutor.

Deni

Iscu Andrei wrote:
> Din cate inteleg eu cam asta sta situatia la tine:
>
> LAN1 ---> |__> SERVER |_> NET1
> LAN2 ---> |                     |_> NET2
>
> Iar tu vrei sa te conectezi la server din oricare din LAN-uri, dar
> folosind ca ip de destinatie unul din cele reale de la provideri.
> Acilea e o bubulina dpdv logic... Si cu rutarile trebuie avuta mare
> grija ca sa poti reusi asa ceva. Daca nu m-am inselat si asta e cazul,
> mai degraba din lan te conecta pe il-ul de lan, si de pe WAN pe ip-ul
> de wan... Altfel, iti recomand documentatiile de la cisco despre rute
> si ceva rabdare... vei avea nevoie de route si iptables...
> Daca to vrei sa faci faza da un reply...
>
> On 10/14/07, Gabos Denes <gabosdenes at gmail.com> wrote:
>   
>>  Eu pot descarca pe router fara probleme, pot accesa routerul din afara pe
>> ambele ip-uri, numai din interior nu pot pe interfatele externe. Nu vad ce
>> as rezolva daca as sterge linia cu stersul rutei default, defapt fara aia as
>> avea 2 route default una catre un provider si una multipath.
>>
>>  Deni
>>
>>  Gabi Botosan wrote:
>> Salut
>>
>>  Comenteaza linia cu stersul rutelor;
>>  si eu am o problema asemanatoare, am 2 provideri ca si tine si nu pot
>> descarca nimic de pe net pe router insa ma pot conecta la router si asta
>> abia dupa ce am comentat lina aceea; daca primesti o rezolvare la problema
>> ta te rog sa imi spui si mie raspunsul
>>
>>  Numai de bine... Gabi
>>
>>
>>
>>
>>  Gabos Denes <gabosdenes at gmail.com> wrote:
>>  Salutare la toti utilizatorii Ubuntu
>>
>>  Am o problema legata de rutare. Am 2 provideri de internet si vreau sa
>>  fac sa mearga netul pe amindoua deodata. Am urmat pasii de pe
>>  http://lartc.org/howto/lartc.rpdb.multiple-links.html ...
>> si totul merge
>>  ok inafara de faptul ca din interiorul retelei nu pot accesa serverul pe
>>  ip-urile externe (nici cu firewallul dat jos :p). Reteaua interna este
>>  mascaradata pe ambele ip-uri externe.
>>
>>  Aici este scriptul care face rutarea:
>>  P1_NET P2_NET reteaua cu providerii
>>  IP1 IP2 ip-urile externe
>>  P1_GW P2_GW gatewayul de la provideri
>>
>>
>>  #!/bin/sh
>>  ip route del default
>>
>>  #LAN
>>  P0_NET=192.168.0.0
>>  IF0=eth0
>>  IP0=192.168.0.1
>>
>>  #UPC
>>  P1_NET=x.x.134.0
>>  IF1=eth2
>>  IP1=X.X.134.218
>>  P1_GW=X.X.134.1
>>
>>  #RDS
>>  P2_NET=X.X.123.192
>>  IF2=eth1
>>  IP2=X.X.123.220
>>  P2_GW=X.X.123.193
>>
>>  ip route add $P1_NET dev $IF1 src $IP1 table UPC
>>  ip route add default via $P1_GW table UPC
>>  ip route add $P2_NET dev $IF2 src $IP2 table RDS
>>  ip route add default via $P2_GW table RDS
>>
>>  ip route add $P1_NET dev $IF1 src $IP1
>>  ip route add $P2_NET dev $IF2 src $IP2
>>
>>  #Next, you set up the routing rules. These actually choose what routing
>>  #table to route with. You want to make sure that you route out a given
>>  #interface if you already have the corresponding source address:
>>  ip rule add from $IP1 table UPC
>>  ip rule add from $IP2 table RDS
>>
>>
>>  #'If $P0_NET is the local network and $IF0 is its interface,
>>  #the following additional entries are desirable:
>>  ip route add $P0_NET dev $IF0 src $IP0 table UPC
>>  ip route add $P2_NET dev $IF2 table UPC
>>  ip route add 127.0.0.0/8 dev lo table UPC
>>  ip route add $P0_NET dev $IF0 src $IP0 table RDS
>>  ip route add $P1_NET dev $IF1 table RDS
>>  ip route add 127.0.0.0/8 dev lo table RDS
>>
>>  ip route del default
>>  ip route add default scope global nexthop via $P1_GW dev eth2 weight 1
>>  nexthop via $P2_GW dev eth1 weight 1
>>  ip route flush cache
>>
>>
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>>
>>
>>
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>>     
>
>   
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