BGP Routing for a Logical Router

Configure BGP for the logical router to use to route BGP traffic.
  • Network > Routing> Logical Routers > BGP
The table describes the settings to configure BGP, peer groups, peers, and redistribution for a logical router on an Advanced Routing Engine.
BGP Settings
Description
General
Enable
Enable BGP for the logical router.
Router ID
Assign a Router ID to BGP for the logical router, which is typically an IPv4 address to ensure the Router ID is unique.
Local AS
Assign the local autonomous system (AS) to which the logical router belongs based on the Router ID (range for a 2-byte or 4-byte AS number is to 1 to 4,294,967,295).
Global BFD Profile
Select a BFD profile to apply to BGP globally. Default is
None (Disable BFD)
.
Install Route
Enforce First AS
Select to cause the firewall to drop an incoming Update message from an EBGP peer that does not list the EBGP peer’s own AS number as the first AS number in the AS_PATH attribute. (Enabled by default.)
Default Local Preference
Specify the default local preference that can be used to determine preferences among different paths to the same destination; range is 0 to 4,294,967,295; default is 100.
ECMP Multiple AS Support
Enable if you configured ECMP and you want to run ECMP over multiple BGP autonomous systems.
Fast Failover
Fast failover of EBGP is enabled by default. Disable EBGP fast failover if it causes the firewall to unnecessarily withdraw BGP routes.
Graceful Restart—Enable
Enables graceful restart for BGP so that packet forwarding is not disrupted during a BGP restart (enabled by default).
Stale Route Time
Specify the length of time, in seconds, that a route can stay in the stale state (range is 1 to 3,600; default is 120).
Max Peer Restart Time
Specify the maximum length of time, in seconds, that the local device accepts as a grace period restart time for peer devices (range is 1 to 3,600; default is 120).
Local Restart Time
Path Selection—Always Compare MED
Select to choose paths from neighbors in different autonomous systems; default is disabled. The Multi-Exit Discriminator (MED) is an external metric that lets neighbors know about the preferred path into an AS. A lower value is preferred over a higher value.
Deterministic MED Comparison
Select to choose between routes that are advertised by IBGP peers (BGP peers in the same AS). Default is enabled.
Peer Group
Name
Add a BGP peer group by Name.
Enable
Enable the peer group.
Type
Select the type of peer group as
IBGP
(Internal BGP, peering within an AS) or
EBGP
(External BGP—peering between two autonomous systems).
AFI IPv4 Unicast
Select or create an AFI IPv4 profile to apply the settings in the profile to the peer group; default is
None
.
AFI IPv6 Unicast
Select or create an AFI IPv6 profile to apply the settings in the profile to the peer group; default is
None
.
Filtering IPv4 Unicast
Apply all the elements of a Filtering Profile to the peer group.
Filtering IPv6 Unicast
Apply all the elements of a Filtering Profile to the peer group.
Auth Profile
Select or create an authentication profile that is used to authenticate BGP peer communications; default is
None
.
Timer Profile
Select or create a Timers profile to apply to the peer group; default is
None
.
Multi Hop
Set the time-to-live (TTL) value in the IP header. Range is 1 to 255; a setting of 0 means use the default value: 1 for EBGP; 255 for IBGP.
Dampening Profile
Peer
Name
Add a BGP peer by name, which must start with an alphanumeric character and contain a maximum of 31 characters, including letters, numbers, underscore, hyphen, period, and space.
Enable
Enable the BGP peer.
Passive
Peer AS
Enter the AS to which the peer belongs; range is 1 to 4,294,967,295.
Peer—Addressing
Inherit
  • Yes
    —Select for the peer to inherit the AFI and Subsequent AFI (SAFI) configuration from the peer group.
  • No
AFI IPv4 Unicast
(
Available if
Inherit No
) Select or create an AFI IPv4 profile to apply the settings in the profile to the peer; default is
None
.
AFI IPv6 Unicast
(
Available if
Inherit No
) Select or create an AFI IPv6 profile to apply the settings in the profile to the peer; default is
None
.
Filtering IPv4 Unicast
(
Available if
Inherit No
) Default is
None
.
Filtering IPv6 Unicast
(
Available if
Inherit No
) Default is
None
.
Local Address - Interface
(
Available if
Inherit Yes
) Select the Layer 3 interface for which you are configuring BGP. Interfaces configured with a static IP address and interfaces configured as a DHCP client are available to select. If you select an interface where DHCP assigns the address, the
IP
address will indicate
None
. DHCP will later assign an IP address to the interface; you can see the address when you view
More Runtime Stats
for the logical router.
IP Address
(
Available if
Inherit Yes
) If the interface has more than one IP address, enter the IP address and netmask you want to use.
Peer Address - IP
(
Available if
Inherit Yes
) Enter the IP address of the peer.
Peer—Connection Options
These settings override the same option you have set for the peer group to which the peer belongs.
Auth Profile
Select or create an Authentication profile. Alternatively, select
inherit (Inherit from Peer-Group)
or
None
, both of which cause the peer to use the Auth profile specified for the peer group.
Timer Profile
Select or create a Timers profile. Alternatively, select
inherit (Inherit from Peer-Group)
or
None
, both of which cause the peer to use the Timers profile specified for the peer group.
Multi Hop
Select
inherit (Inherit from Peer-Group)
or
None
, both of which cause the peer to use the value specified for the peer group.
Dampening Profile
Peer—Advanced
Enable Sender Side Loop Detection
Select to cause the firewall to check the AS_PATH attribute of a route in its forwarding information base (FIB) before it sends the route in an Update, to ensure that the peer AS number is not on the AS_PATH list. If it is, the firewall removes it to prevent a loop. Default is enabled.
BFD Profile
Inherit-vr-global-setting (Inherit Protocol’s Global BFD Profile)
Default is None (Disable BFD)
BGP Redistribution
Redistribution Rules
IPv4 Unicast
Select or create a Redistribution profile to specify which static or connected IPv4 routes to redistribute to the IPv4 unicast route table. Default is
None
.
IPv6 Unicast
Select or create a Redistribution profile to specify which static or connected IPv6 routes to redistribute to the IPv6 unicast route table. Default is
None
.
Network
IPv4 or IPv6
Select
IPv4
or
IPv6
.
Network
Add a corresponding IPv4 or IPv6 network address; subnets with matching network addresses are advertised to BGP peers of the logical router.
Unicast
Select to install the matching routes into the Unicast routing table of all BGP peers.

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