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البحث عن بادئة BGP

أدخل بادئة (أو عنواناً واحداً). يُجاب من نسختنا اليومية من جدول التوجيه العالمي.

أمثلة:

195.40.0.0/16

رؤية جامع واحد (APNIC). المسار الذي يُرشَّح قبل وصوله إلى ذلك الجامع لا يُدرج.

معلنة كما هي

السجل
RIPE NCC · المملكة المتحدة · 24‏/04‏/1996
الكتلة المفوَّضة
195.40.0.0 – 195.40.63.255

المسارات المغطّية

0

لا يغطيها أي مسار أقل تحديداً.

المسارات الأكثر تحديداً

121 مساراً أكثر تحديداً من 19 نظاماً مستقلاً مُنشئاً

يُعرض أول 100.

هذا النص غير متوفر بعد باللغة العربية. يُعرض باللغة الإنجليزية إلى أن تُنشر ترجمة.

On the internet, routes are announced as prefixes: an autonomous system tells its neighbours via BGP that it can deliver traffic for, say, 144.122.0.0/16 (Middle East Technical University, AS1967). This tool looks a prefix up in our daily copy of the global routing table and shows three things:

  • Exact announcements: which AS originates exactly this prefix. More than one origin (a MOAS) is normal for anycast services and some multihomed networks, and suspicious otherwise.
  • Covering routes: less-specific announcements that contain it. Traffic follows the most specific route, so a covering route matters if the more-specific one disappears.
  • More-specifics: announcements inside it, which may belong to other networks (customers, or a hijack).

Each announced route is also checked against the RPKI: whether a ROA authorises its origin AS.

The table is the view from APNIC’s route collector. Most of the global table is the same from everywhere, but a route that is filtered before it reaches that collector will not appear.

الأسئلة الشائعة

Why is my /24 not listed but a /16 is?

Your addresses are announced as part of the larger block, and no one announces the /24 separately. That is the normal case for most customers of a provider.

What is a more-specific hijack?

Someone announces a longer prefix inside your space. Because routers prefer the most specific route, traffic goes to them. RPKI with a strict max length makes such announcements invalid.

Can I enter a single address?

Yes. The tool then shows the most specific announced route that contains it.

ذو صلة