Administrator Guide

Version Description
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage Information
At least one of the routes included in the aggregate address must be in the BGP routing table for the configured
aggregate to become active.
If routes within the aggregate are constantly changing, do not add the as-set parameter to the aggregate as
the aggregate flaps to keep track of the changes in the AS_PATH.
In route maps used in the suppress-map parameter, routes meeting the deny clause are not suppress; in other
words, they are allowed. The opposite is also true: routes meeting the permit clause are suppressed.
If the route is injected via the network command, that route still appears in the routing table if the summary-
only parameter is configured in the aggregate-address command.
The summary-only parameter suppresses all advertisements. If you want to suppress advertisements to only
specific neighbors, use the neighbor distribute-list command.
In the show ip bgp command, aggregates contain an ‘a’ in the first column and routes suppressed by the
aggregate contain an ‘s’ in the first column.
When an aggregate address is denied using a peer's outbound route-map, individual routes suppressed by the
aggregate address are advertised to that peer.
The attribute-map corresponding to an aggregate address is applied during the outbound update creation time;
the value set in that attribute-map will not be shown in the output of the show ip bgp aggregate route
command.
bgp add-path
Allow the advertisement of multiple paths for the same address prefix without the new paths replacing any previous ones.
Syntax
bgp add-path [send | receive | both | enable] path-count
Parameters
send Enter the keyword send to indicate that the system sends multiple paths to peers.
receive Enter the keyword receive to indicate that the system accepts multiple paths from
peers.
both Enter the keyword both to indicate that the system sends and accepts multiple paths
from peers.
enable Enter the keyword enable to enable add-path support support for the node.
path-count Enter the number paths supported. The range is from 2 to 64.
Defaults Disabled
Border Gateway Protocol 341