peer ignore
Function
The peer ignore command prevents a BGP device from establishing a session with a peer or peer group.
The undo peer ignore command permits a BGP device from establishing a session with a peer or peer group.
By default, the device is permitted to set up the session with the BGP peer or peer group.
Format
peer { group-name | ipv4-address | ipv6-address } ignore
undo peer { group-name | ipv4-address | ipv6-address } ignore
Parameters
| Parameter | Description | Value |
|---|---|---|
| group-name | Specifies the name of a peer group. | The name is a string of 1 to 47 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string. |
| ipv4-address | Specifies the IPv4 address of a peer. | It is in dotted decimal notation. |
| ipv6-address | Specifies the IPv6 address of a peer. | The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X. |
ipv4-address is valid only in the BGP view, BGP-VPN instance IPv4 address family view, and BGP-VPN instance IPv6 address family view.
ipv6-address is valid only in the BGP view and BGP-VPN instance IPv6 address family view.
Views
BGP view, BGP-VPN instance IPv4 address family view, BGP-VPN instance IPv6 address family view
Usage Guidelines
Usage Scenario
When a BGP device needs to transitorily close the session with a peer and reconfiguring the peer requires too much workload, the peer ignore command can be used to avoid the reconfiguration of the peer. For example, if the peer relationship frequently alternates between Up and Down because of the upgrade of a peer or the adjustment of the link, the BGP peer relationship needs to be interrupted temporarily. In this case, the peer ignore command can be used on the stabler end to prevent frequent flapping of the route or peer relationship.
The peer ignore command is used to tear down sessions between a BGP device and its peer or peer group and delete all related routing information. In the case of a peer group, a large number of sessions are suddenly torn down.
Prerequisites
Peer relationships have been established using the peer as-number command.
Precautions
After the peer ignore command is run on a device, the session between the device and its peer is closed and all the related routing information is cleared.
After a BGP session is successfully established, running the peer ignore command interrupts the BGP session. The interrupted BGP session cannot be established again, and the status of the corresponding BGP peer relationship is displayed as Idle.
Running the peer ignore command together with the peer enable command equals running of the reset bgp command. Both methods can be used to configure a device to re-establish a session.