Fragmentation - Avaya G430 Manual

Root level
command
router vrrp
show ip vrrp

Fragmentation

The Branch Gateway supports IP fragmentation and reassembly. The Branch Gateway router
can fragment and reassemble IP packets according to RFC 791. This feature allows the router
to send and receive large IP packets where the underlying data link protocol constrains the
Maximum Transport Unit (MTU).
IP fragmentation involves breaking a datagram into a number of pieces that can be
reassembled later. The IP source, destination, identification, total length, and fragment offset
fields, along with the more fragment and don't fragment flags in the IP header, are used for IP
fragmentation and reassembly.
IP fragmentation works as follows:
• Each IP packet is divided into fragments
• Each fragment becomes its own IP packet
• Each packet has same identifier, source, and destination address
Administering Avaya G430 Branch Gateway
Command
no ip vrrp
Discard the packets
override addr
owner
ip vrrp Configure a router to preempt a lower priority
master for the virtual router ID
preempt
no ip vrrp Disable preemption for a virtual router
instance. By default, preemption is enabled.
preempt
ip vrrp Set the primary address used as the source
address of VRRP packets for the virtual router
primary
ID
no ip vrrp Restore the default primary address for a
virtual router instance. By default, the primary
primary
address is selected automatically by the
device.
ip vrrp
Set the virtual router priority value used when
selecting a master router
priority
ip vrrp timer Set the virtual router advertisement timer
value for the virtual router ID
Enable or disable VRRP routing globally
Display VRRP information
Description
October 2013
The router
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