Using advanced features

As a packet is routed through different networks, it may be necessary for a router to divide the packet into smaller pieces because it might be too large to transmit as a single packet on a different network. This may occur at the interfaces of physically different networks.

The MTU of a security gateway passing secure traffic is 1404 bytes, which includes the additional IPSec information. The MTU of a security gateway passing unprotected traffic is 1514 bytes.

If Path MTU Discovery is running, a security gateway does not convert the following types of packets into secured traffic, and it uses an ICMP message to ask the source of the packets to fragment them.

●Packets larger than 1404 bytes

●Packets with the Don’t Fragment Bit set

●Packets being the first fragment in the IP datagram

Following are reasons why you may not want a security gateway to participate in Path MTU:

●A firewall sits between the security gateway and the source of packets needing VPN services. This would prevent the source from receiving security gateway ICMP messages indicating that fragmentation is needed.

●The source of packets needing VPN services does not fragment packets, even when notified by a security gateway ICMP message.

●A router in the network is outdated and will not send an ICMP need fragmentation message, or will not send a message at all.

The symptom of either of these situations would be that a network sniff indicates the security gateway is sending a fragmentation-needed ICMP message, but the traffic initiator is retransmitting the original packet.

To configure the Path MTU Discovery:

1.From the Device>Contents column, select the security gateway you want to configure.

2.Click the Advanced tab to bring it to the front.

3.From the Properties column, select MTU Path Discovery to display the MTU Path Discovery values.

4.From the Values list, do the following.

●Select the On radio button to run MTU Path Discovery.

●Select the Off radio button to disable MTU Path Discovery.

5.Enter the Path MTU Timeout value.

The path MTU timeout value is the number of minutes the SG will remember the new MTU learned for a path. When the timeout expires, the SG will attempt to send the maximum configured packet size. The default value is1000. The timeout value 0 means that the path MTU will never timeout.

202 Avaya VPNmanager Configuration Guide Release 3.7

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Avaya 3.7 manual To configure the Path MTU Discovery, Enter the Path MTU Timeout value
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3.7 specifications

Avaya 3.7 represents a significant evolution in unified communications technology, designed to enhance collaboration and streamline communication workflows for organizations of all sizes. As a cornerstone of Avaya's offerings, this version incorporates a range of features and improvements that cater to contemporary business needs, emphasizing flexibility, reliability, and seamless integration.

One of the most notable features of Avaya 3.7 is its robust call management capabilities. The platform allows users to manage calls effectively through a user-friendly interface, enabling intuitive functionalities such as drag-and-drop call handling, call forwarding, and conference calling. These features help employees stay connected, facilitating better communication and teamwork across departments.

In terms of mobility, Avaya 3.7 supports mobile applications that allow users to access the system remotely. This is particularly advantageous for businesses with a workforce that relies on remote or hybrid work models. The mobile integration ensures users can make and receive calls, check voicemail, and manage their schedules directly from their smartphones, maintaining productivity regardless of location.

The system also embraces advanced collaboration tools, such as video conferencing and instant messaging. These features promote a more dynamic interaction environment, fostering real-time communication among team members. Video conferencing capabilities allow for high-definition video quality and reliable connectivity, making virtual meetings more engaging and effective.

Security is another critical characteristic of Avaya 3.7. The platform includes enhanced encryption protocols to protect sensitive communications and ensure data integrity. With cybersecurity remaining a top concern for businesses, Avaya has prioritized the security of its communications solutions, safeguarding organizations' information against potential threats.

Furthermore, Avaya 3.7 benefits from the incorporation of AI and analytics. These technologies provide businesses with valuable insights into communication patterns and user behavior, enabling them to optimize their processes. The analytics can help identify areas for improvement and drive informed decision-making, thus enhancing overall efficiency.

Interoperability with existing systems is another hallmark of Avaya 3.7. The platform easily integrates with various applications and services, allowing businesses to leverage their current technology investments and create a cohesive communication ecosystem.

In summary, Avaya 3.7 stands out as a comprehensive communication solution that addresses the modern demands of the workplace. With its advanced call management features, mobility support, collaboration tools, strong security measures, and integration capabilities, Avaya 3.7 positions itself as a vital asset for organizations aiming to enhance their communication strategies and drive business success.
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