Re: [cisco-ttl] Trafik Incelemesi

From: Serhat Uslay (serhat.uslay_at_zurich.com.au)
Date: Mon Jul 19 2004 - 23:26:12 GMT

  • Next message: Serhat Uslay: "Re: [cisco-ttl] NAT problemi"

    Bu isi hangi router'da yapacagin sececegin cozum icin onemlidir. Once
    Router modeli ile IOS versionunu "Software ADvisor" dan bakip hangi
    "feature" larin mevcut olduguna bakman gerekir. BAzi cozumler mevcut olsa
    bile router'in mevcut CPU kullanimina gore verimli olmayabilir. En son
    istedigin sey calisan bir sistemi istatistik elde etmek icin zorlamandir
    (CPU acisindan)
    Bazi cozumler asagida verilmistir ;

    1) en basit inceleme "ip accounting" ile olur. Interface 'de "ip
    accounting output-packets" yazarak ve sonra "sh ip accounting " ile SA and
    DA ile packet sayisini gorebilirsin (port numaralari degil !).
    2) "ip cef" configure edildikten sonra interface altinda " ip route-cache
    flow" tanimlarsin.
    Ve asagidaki gibi ciktiyi gorebilirsin.
    ZRTOPE01#sh ip cache flow
    IP packet size distribution (10539862 total packets):
       1-32 64 96 128 160 192 224 256 288 320 352 384 416 448
    480
       .000 .625 .091 .015 .007 .005 .002 .002 .007 .013 .006 .004 .006 .005
    005

        512 544 576 1024 1536 2048 2560 3072 3584 4096 4608
       .005 .004 .014 .030 .144 .000 .000 .000 .000 .000 .000

    IP Flow Switching Cache, 4456704 bytes
      111 active, 65425 inactive, 816404 added
      8258307 ager polls, 0 flow alloc failures
      Active flows timeout in 30 minutes
      Inactive flows timeout in 15 seconds
      last clearing of statistics never
    Protocol Total Flows Packets Bytes Packets Active(Sec)
    Idle(Sec)
    -------- Flows /Sec /Flow /Pkt /Sec /Flow /Flow
    TCP-Telnet 118 0.0 1 43 0.0 4.0 15.4
    TCP-FTP 181 0.0 11 50 0.0 8.6 6.6
    TCP-FTPD 163 0.0 283 40 0.0 14.8 1.8
    TCP-WWW 522042 0.2 10 270 3.1 0.9 2.4
    TCP-SMTP 146964 0.0 11 615 0.9 6.0 11.7
    TCP-X 1 0.0 11 609 0.0 2.6 1.6
    TCP-other 94162 0.0 24 230 1.2 3.5 3.8
    UDP-DNS 33897 0.0 20 74 0.3 15.3 15.4

    3) Daha once bir arkadasin yolladigi "nbar " ile ilgili sayfaya bakip onu
    kullanabilirsin.

    4) Netflow kullanabilirsin.

    5) Router'i Packeteer gibi bandwidth shaping yapan bir cihaz'a baglayip
    HTML ile butun trafigi gorebilir, istersen trafigi IP adreslere veya port
    numarasina gore sinirlayabilirsin.

    Serhat

    Please respond to cisco-ttl_at_yahoogroups.com

    To: cisco-ttl_at_yahoogroups.com
    cc:
    Subject: [cisco-ttl] Trafik Incelemesi

    Cisco routerlar uzerinde ki bir interfaceden akan
    trafigi ve bu trafigi neyin olusturduguna(http-smtp-
    vs) dair istatistiksel sonuclar nasıl elde ederim
    boyle bir program var mı ?

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