247
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Create an IPsec transform set
and enter its view.
ipsec
transform-set
transform-set-name
By default, no IPsec transform set
exists.
3.
Specify the security protocol
for the IPsec transform set.
protocol
{
ah
|
ah-esp
|
esp
}
Optional.
By default, the IPsec transform set
uses ESP as the security protocol.
4.
Specify the security
algorithms.
•
Specify the encryption
algorithm for ESP in non-FIPS
mode:
esp encryption-algorithm
{
3des-cbc
|
aes-cbc-128
|
aes-cbc-192
|
aes-cbc-256
|
des-cbc
|
null
}
*
•
Specify the encryption
algorithm for ESP in FIPS mode:
esp encryption-algorithm
{
aes-cbc-128
|
aes-cbc-192
|
aes-cbc-256
}
*
•
Specify the authentication
algorithm for ESP in non-FIPS
mode:
esp authentication-algorithm
{
md5
|
sha1
}
*
•
Specify the authentication
algorithm for ESP in FIPS mode:
esp authentication-algorithm
sha1
•
Specify the authentication
algorithm for AH in non-FIPS
mode:
ah authentication-algorithm
{
md5
|
sha1
}
*
•
Specify the authentication
algorithm for AH in FIPS mode:
ah authentication-algorithm
sha1
Configure at least one command.
By default, no security algorithm is
specified.
You can specify security algorithms
for a security protocol only when
the security protocol is used by the
transform set. For example, you
can specify the ESP-specific
security algorithms only when you
select ESP or AH-ESP as the security
protocol.
For ESP, you must specify both the
authentication and encryption
algorithms.
You can specify multiple
algorithms by using one command,
and the algorithm specified earlier
has a higher priority.
5.
Specify the mode in which the
security protocol encapsulates
IP packets.
encapsulation-mode
{
transport
|
tunnel
}
By default, the security protocol
encapsulates IP packets in tunnel
mode.
The transport mode applies only
when the source and destination IP
addresses of data flows match
those of the IPsec tunnel.
IPsec for IPv6 routing protocols
supports only the transport mode.