How do I configure fast leave of a member port on an S series switch

10

The prompt leave function enables the switch to delete the multicast forwarding entry of a multicast group from an interface immediately after the interface receives an IGMP Leave message for the group. This function saves bandwidth and system resources because the switch does not need to wait until the aging timer of the interface expires.
For S series switches excluding the S1700, to enable fast leave of a member port in VLAN 10, perform the following configurations:
[HUAWEI] igmp-snooping enable //Enable IGMP snooping globally.
[HUAWEI] vlan 10
[HUAWEI-vlan10] igmp-snooping enable //Enable IGMP snooping in VLAN 10.
[HUAWEI-vlan10] igmp-snooping prompt-leave //Enable fast leave of a member port in VLAN 10.

Other related questions:
Implementation and application of fast leave of S series switches
For an S series switch, the fast leave function is configured using the igmp-snooping prompt-leave command (for Layer 2 multicast) or the igmp prompt-leave command (for Layer 3 multicast). If this function is not configured, the switch sends a Group-Specific Query message in response to an IGMP Leave message to check whether there are other users in the group specified in the Leave message. After fast leave is configured, the switch directly deletes the interface that receives the IGMP Leave message from the multicast forwarding entry, and does not check whether there are still users in the group. The fast leave function is applicable only to interfaces with only one user attached. If fast leave is configured on an interface connecting to multiple users, multicast traffic of all users under the interface is interrupted when one user switches to another channel.

Are services affected when one member S series modular switch leaves the CSS
When one member S series modular switch leaves the CSS, services on the switch are affected.

Configuring IS-IS fast convergence on S series switches
To configure IS-IS fast convergence on S series switches supporting IS-IS, run the following commands in the IS-IS process: timer spf flash-flood timer lsp-generation

What are the working mechanism and usage scenario of fast leave
The fast leave function is configured using the igmp-snooping prompt-leave command (for Layer 2 multicast) or the igmp prompt-leave command (for Layer 3 multicast). If this function is not configured, the switch sends a Group-Specific Query message in response to an IGMP Leave message to check whether there are other users in the group specified in the Leave message. After fast leave is configured, the switch directly deletes the interface that receives the IGMP Leave message from the multicast forwarding entry, and does not check whether there are still users in the group. The fast leave function is applicable only to interfaces with only one user attached. If fast leave is configured on an interface connecting to multiple users, multicast traffic of all users under the interface is interrupted when one user switches to another channel.

How do I block a Designated Port. on an S series switch?
You can perform the following operations to block a Designated Port on an S (except the S1700) series switch: 1. Run the stp priority command to set the priority of a switch. 2. Run the stp cost command to set the path cost of a port. 3. Run the stp port priority command to set the priority of the port.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top