Avaya Configuring IP Services Bedienungsanleitung Seite 142

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 585
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 141
Configuring IP Services
5-2 117356-A Rev. A
ARP Overview
The IP router needs both a physical address and an IP address to transmit a
datagram. In situations where the router knows only the network host’s IP address,
the Address Resolution Protocol (ARP) enables the router to determine a network
host’s physical address by binding a 32-bit IP address to a 48-bit MAC address. A
router can use ARP across a single network only, and the network hardware must
support physical broadcasts.
For example, in Figure 5-
1, the router and Host C are on the same physical
network. Both devices have an assigned IP address (the router’s is 140.250.200.1
and Host C’s is 140.250.200.4) and both devices have an assigned physical
address (the router’s is 00 00 A2 00 00 01 and Host C’s is 00 00 A2 00 10 40).
Figure 5-1. ARP Example
140.250.200.0
140.250.200.1
00 00 A2 00 00 01
140.250.200.2
00 00 A2 00 10 20
140.250.200.3
00 00 A2 00 10 30
140.250.200.4
00 00 A2 00 10 40
Router
Host
C
Host
A
Host
B
IP0010A
Seitenansicht 141
1 2 ... 137 138 139 140 141 142 143 144 145 146 147 ... 584 585

Kommentare zu diesen Handbüchern

Keine Kommentare