
Configuring WAN Line Services
2-16 117021-A Rev. A
Configuring KG84A Security
KG84A is a cryptographic device used to secure data transmitted over a
point-to-point synchronous line.
Bay Networks KG84A support allows the router to use the encryption services of
a KG84A device. In a KG84A configuration, the KG84A device is usually placed
between the router and a modem. The KG84A device acts as the DCE for the
attached router. Another KG84A device must be located at the other end of the
point-to-point connection so that encrypted data can be decrypted (F
igure 2-5).
Figure 2-5. KG84A Network Configuration
The Bay Networks router attaches to the KG84A device via a modified V.35
synchronous cable. The encryption/decryption process is usually transparent to
the router. However, occasionally two KG84A devices can lose cryptographic
synchronization. When this occurs, the modified cable allows the router to initiate
cryptographic resynchronization. The modified cable also allows the router to
detect and monitor the local KG84A device resynchronization, whether the
resynchronization is initiated locally or by a remote KG84A device.
The router detects the loss of synchronization between KG84A devices by
monitoring the number of frame check sequence (FCS) errors and valid frames
received. If the router detects FCS errors, and it does not receive a valid frame
within a time you specify, the router software requests resynchronization. The
router also requests resynchronization if it determines that the previous
resynchronization request did not complete before the time you specified.
You can also force a resynchronization of the local KG84A device by pressing its
RESYNC button. The router can detect this type of remote resynchronization also,
and can request a new resynchronization if one does not complete in the
configured time period.
Configure KG84A support on synchronous lines that connect to KG84A
cryptographic devices, using the following parameters in the Edit SYNC
Parameters window:
Router
KG84A
KG84A
Router
MODEM
MODEM
LS0017A
Comentarios a estos manuales