BGP Peer Group Tab

  • Network > Virtual Router > BGP > Peer Group
A BGP peer group is a collection of BGP peers that share settings, such as the type of peer group (EBGP, for example), or the setting to remove private AS numbers from the AS_PATH list that the virtual router sends in Update packets. BGP peer groups save you from having to configure multiple peers with the same settings. You must configure at least one BGP peer group in order to configure the BGP peers that belong to the group.
BGP Peer Group Settings
Configure In
Description
Name
BGP
Peer Group
Enter a name to identify the peer group.
Enable
Select to activate the peer group.
Aggregated Confed AS Path
Select to include a path to the configured aggregated confederation AS.
Soft Reset with Stored Info
Select to perform a soft reset of the firewall after updating the peer settings.
Type
Specify the type of peer or group and configure the associated settings (see below in this table for descriptions of
Import Next Hop
and
Export Next Hop
).
  • IBGP
    —Specify the following:
    • Export Next Hop
  • EBGP Confed
    —Specify the following:
    • Export Next Hop
  • IBGP Confed
    —Specify the following:
    • Export Next Hop
  • EBGP
    —Specify the following:
    • Import Next Hop
    • Export Next Hop
    • Remove Private AS
      (select if you want to force BGP to remove private AS numbers from the AS_PATH attribute).
Import Next Hop
Choose an option for next hop import:
  • Original
    —Use the Next Hop address provided in the original route advertisement.
  • Use Peer
    —Use the peer's IP address as the Next Hop address.
Export Next Hop
Choose an option for next hop export:
  • Resolve
    —Resolve the Next Hop address using the Forwarding Information Base (FIB).
  • Original
    —Use the Next Hop address provided in the original route advertisement.
  • Use Self
    —Replace the Next Hop address with the virtual router's IP address to ensure that it will be in the forwarding path.
Remove Private AS
Select to remove private autonomous systems from the AS_PATH list.
Name
BGP
Peer Group
Peer
Add a
New
BGP peer and enter a name to identify it.
Enable
Select to activate the peer.
Peer AS
Specify the autonomous system (AS) of the peer.
Enable MP-BGP Extensions
BGP
Peer Group
Peer
Addressing
Enables the firewall to support the Multiprotocol BGP Address Family Identifier for IPv4 and IPv6 and Subsequent Address Family Identifier options per RFC 4760.
Address Family Type
Select either the
IPv4
or
IPv6
address family that BGP sessions with this peer will support.
Subsequent Address Family
Select either the
Unicast
or
Multicast
subsequent address family protocol the BGP sessions with this peer will carry.
Local Address—Interface
Choose a firewall interface.
Local Address—IP
Choose a local IP address.
Peer Address—IP
Specify the IP address and port of the peer.
Auth Profile
BGP
Peer Group
Peer
Connection Options
Select a profile or select
New Auth Profile
from the drop down. Enter a Profile
Name
and the
Secret
, and
Confirm Secret
.
Keep Alive Interval
Specify an interval after which routes from a peer are suppressed according to the hold time setting (range is 0-1,200 seconds; default is 30 seconds).
Multi Hop
Set the time-to-live (TTL) value in the IP header (range is 1-255; default is 0). The default value of 0 means 2 for eBGP prior to PAN-OS 8.0.2; it means 1 beginning with PAN-OS 8.0.2. The default value of 0 means 255 for iBGP.
Open Delay Time
Specify the delay time between opening the peer TCP connection and sending the first BGP open message (range is 0-240 seconds; default is 0 seconds).
Hold Time
Specify the period of time that may elapse between successive KEEPALIVE or UPDATE messages from a peer before the peer connection is closed (range is 3-3,600 seconds; default is 90 seconds).
Idle Hold Time
Specify the time to wait in the idle state before retrying connection to the peer (range is 1-3,600 seconds; default is 15 seconds).
Incoming Connections—Remote Port
Specify the incoming port number and
Allow
traffic to this port.
Outgoing Connections—Local Port
Specify the outgoing port number and
Allow
traffic from this port
Reflector Client
BGP
Peer Group
Peer
Advanced
Select the type of reflector client (
Non-Client
,
Client
, or
Meshed Client
). Routes that are received from reflector clients are shared with all internal and external BGP peers.
Peering Type
Specify a Bilateral peer or leave Unspecified.
Max Prefixes
Specify the maximum number of supported IP prefixes (1‑100,000 or unlimited).
Enable Sender Side Loop Detection
Enable to cause the firewall to check the AS_PATH attribute of a route in its 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. Usually the receiver does loop detection, but this optimization feature has the sender do loop detection.
BFD
To enable Bidirectional Forwarding Detection (BFD) for a BGP peer (and thereby override the
BFD
setting for BGP, as long as
BFD
is not disabled for BGP at the virtual router level), select the default profile (default BFD settings), an existing BFD profile,
Inherit-vr-global-setting
(to inherit the global BGP BFD profile), or
New BFD Profile
(to create a new BFD profile).
Disable BFD
disables BFD for the BGP peer.
If you enable or disable BFD globally, all interfaces running BGP will be taken down and brought back up with the BFD function. This can disrupt all BGP traffic. When you enable BFD on the interface, the firewall will stop the BGP connection to the peer to program BFD on the interface. The peer device will see the BGP connection drop, which can result in a reconvergence that impacts production traffic. Therefore, enable BFD on BGP interfaces during an off-peak time when a reconvergence will not impact production traffic.

Related Documentation