BGP Aggregate Tab

  • Network > Virtual Router > BGP > Aggregate
Route aggregation is the act of combining specific routes (those with a longer prefix length) into a single route (with a shorter prefix length) to reduce routing advertisements that the firewall must send and to have fewer routes in the route table.
BGP Aggregate Settings
Configure In
Description
Name
BGP
Aggregate
Enter a name for the aggregation rule.
Prefix
Enter a summary prefix (IP address/prefix length) that will be used to aggregate the longer prefixes.
Enable
Select to enable this aggregation of routes.
Summary
Select to summarize routes.
AS Set
Select to cause the firewall, for this aggregation rule, to include the set of AS numbers (AS set) in the AS path of the aggregate route. The AS set is the unordered list of the origin AS numbers from the individual routes that are aggregated.
Name
BGP
Aggregate
Suppress Filters
Define the attributes that will cause the matched routes to be suppressed.
Add
and enter a name for a Suppress Filter.
Enable
Select to enable the Suppress Filter.
AS Path Regular Expression
Specify a regular expression for AS_PATH to filter which routes will be aggregated, for example, ^5000 means routes learned from AS 5000.
Community Regular Expression
Specify a regular expression for communities to filter which routes will be aggregated, for example, 500:.* matches communities with 500:x.
Extended Community Regular Expression
Specify a regular expression for extended communities to filter which routes will be aggregated.
MED
Specify the MED that filters which routes will be aggregated.
Route Table
Specify which route table to use for aggregated routes that should be suppressed (not advertised):
unicast
,
multicast
, or
both
.
Address Prefix
Enter the IP address that you want to suppress from advertisement.
Next Hop
Enter the next hop address of the BGP prefix that you want to suppress.
From Peer
Enter the IP address of the peer from which the BGP prefix (that you want to suppress) was received.
Name
BGP
Aggregate
Advertise Filters
Define the attributes for an Advertise Filter that causes the firewall to advertise to peers any route that matches the filter. Click
Add
and enter a name for the Advertise Filter.
Enable
Select to enable this Advertise Filter.
AS Path Regular Expression
Specify a regular expression for AS_PATH to filter which routes will be advertised.
Community Regular Expression
Specify a regular expression for Community to filter which routes will be advertised.
Extended Community Regular Expression
Specify a regular expression for Extended Community to filter which routes will be advertised.
MED
Specify a MED value to filter which routes will be advertised.
Route Table
Specify which route table to use for an Advertise Filter of aggregate routes:
unicast
,
multicast
, or
both
.
Address Prefix
Enter an IP address that you want BGP to advertise.
Next Hop
Enter the Next Hop address of the IP address you want BGP to advertise.
From Peer
Enter the IP address of the peer from which the prefix was received, that you want BGP to advertise.
BGP
Aggregate
Aggregate Route Attributes
Define the attributes for the aggregate route.
Local Preference
Local preference in the range 0-4,294,967,295.
MED
Multi Exit Discriminator in the range 0-4,294,967,295.
Weight
Weight in the range 0-65,535.
Next Hop
Next Hop IP address.
Origin
Origin of the route:
igp
,
egp
, or
incomplete
.
AS Path Limit
AS Path Limit in the range 1-255.
AS Path
Select Type:
None
or
Prepend
.
Community
Select Type:
None
,
Remove All
,
Remove Regex
,
Append
, or
Overwrite
.
Extended Community
Select Type:
None
,
Remove All
,
Remove Regex
,
Append
, or
Overwrite
.

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