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The type of ID can be a domain name, an IP address or an e-mail address. The content is the IP
address, domain name, or e-mail address.
Table 66 Local ID Type and Content Fields
LOCAL ID TYPE= CONTENT=
IP
DNS
E-mail
16.5.7.1 ID Type and Content Examples
Two IPSec routers must have matching ID type and content configuration in order to set up a VPN
tunnel.
The two LTE Devices in this example can complete negotiation and establish a VPN tunnel.
Table 67 Matching ID Type and Content Configuration Example
LTE Device A
Local ID type: E-mail
Local ID content: tom@yourcompany.com
Remote ID type: IP
Remote ID content: 1.1.1.2
The two LTE Devices in this example cannot complete their negotiation because LTE Device B's
Local ID type is IP, but LTE Device A's Remote ID type is set to E-mail. An "ID mismatched"
message displays in the IPSEC LOG.
Table 68 Mismatching ID Type and Content Configuration Example
LTE DEVICE A
Local ID type: IP
Local ID content: 1.1.1.10
Remote ID type: E-mail
Remote ID content: aa@yahoo.com
16.5.8 Pre-Shared Key
A pre-shared key identifies a communicating party during a phase 1 IKE negotiation (see
16.5.3 on page 157
with another party before you can communicate with them over a secure connection.
16.5.9 Diffie-Hellman (DH) Key Groups
Diffie-Hellman (DH) is a public-key cryptography protocol that allows two parties to establish a
shared secret over an unsecured communications channel. Diffie-Hellman is used within IKE SA
setup to establish session keys. Upon completion of the Diffie-Hellman exchange, the two peers
have a shared secret, but the IKE SA is not authenticated. For authentication, use pre-shared keys.
LTE-5121 User's Guide
Type the IP address of your computer.
Type a domain name (up to 31 characters) by which to identify this LTE Device.
Type an e-mail address (up to 31 characters) by which to identify this LTE
Device.
The domain name or e-mail address that you use in the Local ID Content field
is used for identification purposes only and does not need to be a real domain
name or e-mail address.
for more on IKE phases). It is called "pre-shared" because you have to share it
LTE Device B
Local ID type: IP
Local ID content: 1.1.1.2
Remote ID type: E-mail
Remote ID content: tom@yourcompany.com
LTE DEVICE B
Local ID type: IP
Local ID content: 1.1.1.2
Remote ID type: IP
Remote ID content: 1.1.1.0
Chapter 16 VPN
Section
161
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