Re: [cisco-ttl] dialup backup line

From: Serhat Uslay (serhat.uslay_at_zurich.com.au)
Date: Wed Sep 29 2004 - 10:33:19 GMT

  • Next message: Devrim Yener KUCUK: "Re: [cisco-ttl] channellised e1- Protocol Down"

    IKi yontem ile bu sorunu asabilirsin.Ornek olarak merkez 192.168.10.0/24
    ve sube 192.168.20.0/24 olsun.
    1) Dinamik routing protocol kullanabilirsin.
    Mesela merkezdeki E1 ucu 192.168.110.1/30 olsun.Subede de
    192.168.110.2/30. PPP (ISDN veya async) lere baska bir adres tanimla yada
    ayni adresleri "ip unnumbered fasteth0" gibi bir tanimla kullan.
    ornek; router eigrp 20
              network 192.168.0.0

    2) Ofiste iki tane farkli subnet kullan, birisi E1 icin digeri de "dialer"
    icin.
    sonrada ofiste iki tane static tanimla
    mesela ;
    ip route 0.0.0.0 0.0.0.0 192.168.110.1 E1 in merkez ucu
    ip route 0.0.0.0 0.0.0.0 10.64.120.1 210 Dial'in merkez ucu (210 onun
    obur route a gore daha az degerli olmasini saglar..)

    merkez de de

    ip route 192.168.20.0 255.255.255.0 192.168.110.2
    ip route 192.168.20.0 255.255.255.0 192.168.120.2 210

    kolay gelsin

    Serhat

    Please respond to cisco-ttl_at_yahoogroups.com

    To: <cisco-ttl_at_yahoogroups.com>
    cc:
    Subject: [cisco-ttl] dialup backup line

    Selamlar,

    Merkez ofisimize subelerimiz su anda 10 adet e1 ustunden baglaniyor. Bu
    sayi daha da artacak hatta.

    Backup line olarak async hat kullanmak istiyorum. Kapasite olarak yetmese
    bile en azindan acil islemler icin kullanilabilir.

    Elimdeki cihazlar bir 7200 bir AS5350 ve yeterli sayida 1700 router.

    Daha once bu tur bir backup line kullanmadim. O yuzden merak ettigim
    birsey var.

    Diyelim A noktasinin locali 192.168.100.1 255.255.255.0 merkez ofiste de
    static bir routing var.

    E1 hatti calismadigi zaman otomatik olarak benim access serverima baglansa
     bile karsidaki router, bu static route tanimlarindan dolayi
    calismayacaktir diye dusunuyorum. En azindan merkez tarafindan 192.168.100
    subnetine gidilmek istendiginde calismayacaktir.


    Bu durumda routing tanimlarimi nasil yapmaliyim ki, hatlarimdan biri
    kesildiginde async olarak baglanacak olan (isdn de olabilir) ip ustunden
    tekrar routing tanimi yapilsin. Ya da boyle birsey mumkun degil mi?

    Su anki merkez ofisteki configimi ve ornek olarak bir subenin router
    configini gonderiyorum.


    Tesekkurler.




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