Enterasys csx150 Guia Do Utilizador
Small Office Remote Access Switch 223
C
ONFIGURING
A
DVANCED
IP R
OUTING
IP Filters
When a PPP connection is established to the system, the system and the remote device exchange
their IP addresses during the IPCP (IP Control Protocol) phase. If the remote device does not know
its own IP address, the system will assign a proper IP address to it. A proper IP address can be a
permanent IP address configured for the remote device in the device table, or it can be one of the
IP addresses configured in the IP Address Pool. If an IP address from the address pool is used, it
will be returned to the pool when the connection is terminated. This allows the IP address to be
reused for other remote IP devices. As many as 64 IP addresses can be configured in the IP Address
Pool.
their IP addresses during the IPCP (IP Control Protocol) phase. If the remote device does not know
its own IP address, the system will assign a proper IP address to it. A proper IP address can be a
permanent IP address configured for the remote device in the device table, or it can be one of the
IP addresses configured in the IP Address Pool. If an IP address from the address pool is used, it
will be returned to the pool when the connection is terminated. This allows the IP address to be
reused for other remote IP devices. As many as 64 IP addresses can be configured in the IP Address
Pool.
Notes: Dynamic IP address assignment from the IP Address Pool is only supported via PPP IPCP.
An IP address should not be configured for the device (either in the on-node device
database or in a remote authentication database) if an IP address is to be assigned to the
device from the IP address pool.
database or in a remote authentication database) if an IP address is to be assigned to the
device from the IP address pool.
IP F
ILTERS
The IP Filter Configuration is a three-part process. It involves:
1.
configuring packet types
2.
configuring the filters to act on these packet types
3.
applying the filters to selected points in the IP packet processing
We suggest you become familiar with the IP Filtering mechanism before attempting a
configuration. Refer to
configuration. Refer to
.
Understandably, when IP Filters are enabled, system performance will slow down. This is due to
the fact that every IP packet will experience a delay while the system is searching for a filter match.
System performance will also be affected by the number of packets, conditions and filters
configured. Refer to the
the fact that every IP packet will experience a delay while the system is searching for a filter match.
System performance will also be affected by the number of packets, conditions and filters
configured. Refer to the
section for details.
I
NITIATING
THE
IP F
ILTER
C
ONFIGURATION
U
SING
CFGEDIT
To begin the configuration process, IP must be enabled. Access IP Filter configuration through the
extended IP Routing Menu:
extended IP Routing Menu: