Avaya Business Secure Router 252 Configuration - Basics Instrukcja Użytkownika Pobierz pdf (Strona 212)

212 Chapter 13 VPN

NN47923-500

Keep Alive

When you initiate an IPSec tunnel with keep alive enabled, the Business Secure

Router automatically renegotiates the tunnel when the IPSec SA lifetime period

expires (see “Configuring advanced Branch office setup” on page 241 section for

more information about the IPSec SA lifetime). The keep alive option is available

with the Contivity Client rule. See the VPN Contivity Client Rule Setup screen

(Figure 69 on page 215). In effect, the IPSec tunnel becomes an always on

connection after you initiate it. Both IPSec routers must have a Business Secure

Router compatible keep alive feature enabled in order for this feature to work.

If the Business Secure Router has its maximum number of simultaneous IPSec

tunnels connected to it and they all have keep alive enabled, then no other tunnels

can take a turn connecting to the Business Secure Router because the Business

Secure Router does not drop the tunnels that are already connected (unless there is

outbound traffic with no inbound traffic).

Nailed up

The nailed up feature is similar to the keep alive feature. When you initiate an

IPSec tunnel with nailed up enabled, the Business Secure Router automatically

renegotiates the tunnel when the IPSec SA lifetime period expires (see

“Configuring advanced Branch office setup” on page 241 for more information

about the IPSec SA lifetime). The nailed up option is available with the branch

Edit Click the radio button next to a VPN index number and then click Edit to

edit a specific VPN policy.

Delete Click the radio button next to a VPN policy number you want to delete

and then click Delete. When a VPN policy is deleted, subsequent

policies do not move up in the page list.

Note: No matter whether or not keep alive is set, when there is

outbound traffic with no inbound traffic, the Business Secure Router

automatically drops the tunnel after two minutes.

Table 47 Summary

Label Description

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Avaya Business Secure Router 252 Configuration - Basics Instrukcja Użytkownika Strona 212