Configuring Fragmentation - Avaya G250 Administration

Use the ip vrrp override addr owner command to accept packets addressed to
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the IP addresses associated with the virtual router, such as ICMP, SNMP, and telnet (if it is
not the IP address owner). Use the no form of this command to discard these packets.
Use the ip vrrp preempt command to configure a router to preempt a lower priority
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master for the virtual router ID. Use the no form of this command to disable preemption for
a virtual router instance. By default, preemption is enabled.
Use the ip vrrp primary command to set the primary address used as the source
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address of VRRP packets for the virtual router ID. Use the no form of this command to
restore the default primary address for a virtual router instance. By default, the primary
address is selected automatically by the device.
Use the ip vrrp priority command to set the virtual router priority value used when
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selecting a master router. Use the no form of this command to restore the default value.
Use the ip vrrp timer command to set the virtual router advertisement timer value for
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the virtual router ID. Use the no form of this command to restore the default value.
Use the router vrrp command to enable VRRP routing. Use the no form of this
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command to disable VRRP routing.
Use the show ip vrrp command to display VRRP information.
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Configuring fragmentation

The G250/G350 supports IP fragmentation and reassembly. The G250/G350 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.
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Each fragment becomes its own IP packet.
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Each packet has same identifier, source, and destination address.
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Fragments are usually not reassembled until final destination. The G250/G350 supports
fragmentation of IP packets according to RFC 791, and reassembly of IP packets destined only
to its interfaces.
Configuring fragmentation
Issue 3 February 2007 445