
Configuring Import and Export Route Filters
10-23
Parameter: Import Mask
Default: 0.0.0.0
Range: Depends on the address class of the network address
Function: Specifies the range of addresses upon which this filter acts.
For example, consider Class B Network 172.32.0.0, which allocates the
upper 8 bits of the host identification field to the Subnet ID, and the final 8
bits to the Host ID. The address mask directs the filtering process to a
specific portion of the IP address. In other words, any IP address that
matches the masked portion of 172.32.0.0 is subject to filtering. If you
enter 255.255.0.0 for this parameter, only the Net ID portion of the
address will be filtered. If you enter the mask 255.255.255.0, the net ID
and subnet ID portions of the address will be filtered.
If you set the Import Address field to 0.0.0.0 and set this parameter to
0.0.0.0, then the filter applies to all routes. If you set the Import Address
field to 0.0.0.0 and set this parameter to 255.255.255.255, then the filter
applies to the default route.
Instructions: Enter the appropriate mask in dotted decimal notation.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.1.14.1.4
Parameter: Import Peer AS
Default: 0
Range: 0 to 65535
Function: Identifies the autonomous system to which the BGP router at the remote
end of this BGP peer connection belongs. This filter will apply to updates
from this router. The value 0 means “any” AS.
Instructions: Enter the appropriate AS number.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.1.14.1.7
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