without repeating my private response to your private mail, on NMBA
networks, one usually configures OSPF neighbors. The whole NMBA issue is
complex. There is the frame relay configuration, and then there is the OSPF
configuration on top of that. You can have point to multipoint frame relay
interfaces connected to physical, or point-to-point interfaces on the
distant end. Inverse arp maps a remote IP address to the associated other
side dlci.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Alex Lee
Sent: Sunday, September 16, 2001 7:05 PM
To: [EMAIL PROTECTED]
Subject: Re: OSPF packets, point-to-multipoint [7:20115]
Still do not understand,
Building Scalable Cisco Networks, CiscoPress, page 123
".... However,bcause the point-to-multipoint mode treats the network as a
collection of point-to-point links, multicast hello packets discover
neighbors dynamically, and statically configuring neighbors is not
required."
Routing TCP/IP, Vol. 1, page 433
"On broadcast and point-to-point network types, hellos are multicast to
AllSPFRouters (224.0.0.5). On NBMA, point-to-multipoint, and virtual link
network types, hello are unicast to individual neighbors. The implication of
unicasting is that router must first learn of the existence of its neighbors
either through manual configuration or an underlying mechanism such as
Inverse ARP."
What have I missed ?
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=20144&t=20115
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