What is SA lifetime in IPSec?

The global IPSec SA hard lifetime is set. By default, the global time-based SA hard lifetime is 3600 seconds and the global traffic-based SA hard lifetime is 1843200 Kbytes.

What is SA in IPSec tunnel?

An IPsec security association (SA) specifies security properties that are recognized by communicating hosts. These hosts typically require two SAs to communicate securely. A single SA protects data in one direction. The protection is either to a single host or a group (multicast) address.

How do I check my Cisco IPSec tunnel status?

If you want to check for the status of the tunnel, execute “show crypto isakmp sa” or “show crypto ipsec sa”.

Does IPSec lifetime need to match?

When the end with higher lifetime initiates the tunnel it is capable of setting its own lifetime to what is configured on the other end but not vice versa. Once the tunnel is up as per the lower lifetime, when it renegotites, ideally it should not be successful.

What is SA and SPI in IPSec?

–> An SPI is a 32-bit number that is used to uniquely identify a particular Security Association for any connected device. –> A Security Association (SA) is an agreement between two devices about how to protect information during communication. It also indicates the parameters, such as keys and algorithms.

How many SA are in the IPSec tunnel?

two SAs
There are two SAs for each IPsec VPN tunnel: one for outgoing traffic, and another one for incoming traffic. SAs for IPsec VPNs are created in a process called the Internet key exchange (IKE) negotiations.

How do I see tunnels on my Cisco router?

The interface is a tunnel interface. The source address for the tunnel….To display GRE tunneling Information, use the following commands:

1. show ip interface.
2. show ip route.
3. show ip interface tunnel.
4. show ip tunnel traffic.
5. show interface tunnel.
6. show statistics tunnel.

What is IPSec Phase 2 lifetime?

Cisco Meraki products, by default, use a lifetime of 8 hours (28800 seconds) for both IKE phase 1 and IKE phase 2. When there is a mismatch, the most common result is that the VPN stops functioning when one site’s lifetime expires.