backup block

Format

backup block sendRecv [ bras | multicast | igmp-snooping ]

undo backup block sendRecv [ bras | multicast | igmp-snooping ]

Parameters

Parameter	Description	Value
sendRecv	Enables an RBS to block backup for services in the send/receive direction.	The value is an enumerated type and can be case-insensitive send, receive.
bras	Enables an RBS to block backup for BRAS services.	-
l2tp	Enables an RBS to block backup for L2TP services.	-
multicast	Enables an RBS to block backup for multicast services. If you do not specify bras, or multicast, an RBS blocks backup for all services in the send or receive direction.	-
igmp-snooping	Enables an RBS to block backup for IGMP Snooping services.	-

Views

Remote backup service view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
rbs	write

Usage Guidelines

Usage Scenario

If a service backup attribute has been added to a later version, the earlier version cannot identify the attribute when the later version backs up user information to an earlier version, which may affect device running. The backup block command can be run to enable an RBS to block backup for specific services in the send or receive direction. After completing the master and backup devices' version upgrades, run the undo backup block command to disable an RBS from blocking backup for the services.

Configuration Impact

If an RBS has been enabled to block backup for services in the receive direction on the master device or for services in the send direction on the backup device, after the master device restarts, you must disable an RBS from blocking backup for services in the receive direction on the master device or for services in the send direction on the backup device before the master device's VRRP status switches to Master, and run the batch-backup command to back up data from the master device to the backup device in batches. Otherwise, a large number of users may be logged out.

Precautions

In VS mode, this command is supported only by the admin VS.

If a later version contains a backup attribute that cannot be identified by an earlier version, perform the following steps for an upgrade:

1.Configure a large preemption delay for the master and backup devices to ensure that the VRRP status is not switched back before batch backup is complete.

2.Add the command for enabling an RBS to block backup for services in the send direction to a later version's configuration file, and upgrade the master device. After the master device's version upgrade is complete, the master device receives only backup information from the backup device of an earlier version and does not send backup information to the backup device of an earlier version.

3.Upgrade the backup device of an earlier version.

4.Disable an RBS from blocking backup for services in the send direction on both ends after upgrading the backup device, and use a batch backup command to back up user information from the master device to the backup device.

Example

# Enable an RBS to block backup for all services in the send direction.

<HUAWEI> system-view
[~HUAWEI] remote-backup-service rbs
[*HUAWEI-rm-backup-service-rbs] backup block send

# Enable an RBS to block backup for IGMP Snooping services in the receive direction.

<HUAWEI> system-view
[~HUAWEI] remote-backup-service rbs
[*HUAWEI-rm-backup-service-rbs] backup block send igmp-snooping

# Enable an RBS to block backup for BRAS services in the receive direction.

<HUAWEI> system-view
[~HUAWEI] remote-backup-service rbs
[*HUAWEI-rm-backup-service-rbs] backup block receive bras

# Enable an RBS to block backup for BRAS services in the send direction.

<HUAWEI> system-view
[~HUAWEI] remote-backup-service rbs
[*HUAWEI-rm-backup-service-rbs] backup block send bras