Policy Configuration Example; Ip Fragmentation And Reassembly; Ip Fragmentation And Reassembly Overview - Avaya C360 Installation And Configuration Manual

Avaya C360 Layer 3 Features

Policy Configuration Example

The following shows configuration of Access List 100:
1. Assigning priority 6 to all TCP traffic originating in network 149.49.0.0 - rule 1:
C360-1(super)# ip access-list 100 1 fwd6 tcp 149.49.0.0
0.0.255.255 any
done!
2. Assigning priority 3 to all TCP traffic going to the host 172.44.17.1 - rule 2:
C360-1(super)# ip access-list 100 2 fwd3 tcp any host
172.44.17.1
done!
3. Denying Telnet sessions originated by the host 192.168.5.33 - rule 3:
C360-1(super)# ip access-list 100 3 deny tcp host 192.168.5.33
any eq 23
done!

IP Fragmentation and Reassembly

IP Fragmentation and Reassembly Overview

The C360 supports IP Fragmentation and Reassembly. This feature allows the router to send
and receive large IP packets where the underlying data link protocol constrains MTU (maximum
transport unit).
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:
1. IP packet is divided into fragments
2. each fragment becomes its own IP packet
3. each packet has same identifier, source, destination address
184 Installation and Configuration Guide Avaya C360 Multilayer Stackable Switches, version 4.5