294 Brocade ICX 6650 Layer 3 Routing Configuration Guide
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Basic configuration tasks required for BGP4
advertisement-interval num specifies the minimum delay (in seconds) between messages to the
specified neighbor. The default is 30 for EBGP neighbors (neighbors in other autonomous systems).
The default is 5 for IBGP neighbors (neighbors in the same AS). The range is 0 through 600.
NOTE
The Layer 3 switch applies the advertisement interval only under certain conditions. The Layer 3
switch does not apply the advertisement interval when sending initial updates to a BGP4 neighbor.
As a result, the Layer 3 switch sends the updates one immediately after another, without waiting for
the advertisement interval.
capability orf prefixlist [send | receive] configures cooperative router filtering. The send | receive
parameter specifies the support you are enabling:
•send – The Layer 3 switch sends the IP prefix lists as Outbound Route Filters (ORFs) to the
neighbor.
•receive – The Layer 3 switch accepts filters as Outbound Route Filters (ORFs) from the
neighbor.
If you do not specify the capability, both capabilities are enabled. The prefixlist parameter specifies
the type of filter you want to send to the neighbor.
For more information, refer to “Configuring cooperative BGP4 route filtering” on page351.
NOTE
The current release supports cooperative filtering only for filters configured using IP prefix lists.
default-originate [route-map map-name] configures the Layer 3 switch to send the default route
0.0.0.0 to the neighbor. If you use the route-map map-name parameter, the route map injects the
default route conditionally, based on the match conditions in the route map.
description string specifies a name for the neighbor. You can enter an alphanumeric text string up
to 80 characters long.
distribute-list in | out num,num,... specifies a distribute list to be applied to updates to or from the
specified neighbor. The in | out keyword specifies whether the list is applied on updates received
from the neighbor or sent to the neighbor. The num,num,... parameter specifies the list of
address-list filters. The router applies the filters in the order in which you list them and stops
applying the filters in the distribute list when a match is found.
Alternatively, you can specify distribute-list ACL-num in | out to use an IP ACL instead o f a distribu te
list. In this case, ACL-num is an IP ACL.
NOTE
By default, if a route does not match any of the filters, the Layer 3 switch denies the route. To change
the default behavior, configure the last filter as “permit any any”.
NOTE
The address filter must already be configured. Refer to “Specific IP address filtering” on page333.
ebgp-multihop [num] specifies that the neighbor is more than one hop away and that the session
type with the neighbor is thus EBGP-multihop. This option is disabled by default. The num
parameter specifies the TTL you are adding for the neighbor. You can specify a number from 0
through 255. The default is 0. If you leave the EBGP TTL value set to 0, the software uses the IP TTL
value.