Avaya Configuring PPP Services Bedienungsanleitung Seite 32

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 140
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 31
Configuring PPP Services
2-6 117360-A Rev. A
For example, a configure-request packet may specify the link’s maximum
transmission unit (MTU) size and whether the sender wants to use Password
Authentication Protocol (PAP) or Challenge Handshake Authentication Protocol
(CHAP). The configure-request packet contains the user-configured values, which
the sender and its peer router may need to negotiate.
Each router receives a configure-request packet from its peer. Each router
responds with one of three types of packets:
Configure-ACK
If a router accepts the proposed LCP options, it responds with a configure
acknowledgment (ACK) packet.
When the routers on each side of the link send and receive configure-ACK
packets, the LCP advances to an open state, which means that the PPP
interface can advance to the next phase.
Configure-reject
If the configure-request packet contains options that the peer router is not
willing to negotiate, the peer router sends back a configure-reject packet
specifying the nonnegotiable options. From that point on, configure-request
packets that the originating router sends should eliminate the unacceptable
options.
Configure-NAK
If the peer disagrees with some or all of the values of the proposed options in
the configure-request packet, it responds with a configure negative
acknowledgment (NAK) packet. The configure-NAK packet notes the values
that the peer disagrees with, and it includes the corresponding values that the
peer would like to see in subsequent configure-request packets.
LCP negotiations between peers continue until either the routers converge (reach
an agreement regarding the configure-request) and PPP advances to the next
phase; until the peer router transmits a user-specified number of configure-NAK
packets before sending a configure-reject packet; or until the configurable
convergence timer expires. When the originating router receives a configure-reject
packet, the originating router removes the offending options. The routers should
then converge.
Seitenansicht 31
1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 139 140

Kommentare zu diesen Handbüchern

Keine Kommentare