mld-show
Multicast Listener Discovery (MLD) is a Layer 3 multicast protocol used between IPv6 hosts and routers similar to how IGMP is used for IPv4. MLD snooping allows a switch to examine MLD packets and make forwarding decisions based on their content.
MLD snooping constrains IPv6 multicast traffic at Layer 2 by configuring Layer 2 LAN ports dynamically to forward IPv6 multicast traffic only to those ports that want to receive it.
The default behavior, when MLD Snooping is not configured, multicast traffic will be forwarded to all the switch ports, impacting switch performance.
Syntax mld-show
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group-ip ip-address |
Specifies the name of the IP group for the MLD configuration. |
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node-ip ip-address |
Specifies the name of the IP host for the MLD configuration. |
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vnet vnet-name |
Specifies the name of the VNET assigned to the MLD configuration. |
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l2-net l2-net-name |
Specifies the name of the Layer 2 network. |
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vlan vlan-id |
Specifies the ID of the VLAN for the MLD configuration. |
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port port-number |
Specifies the number of the port for the MLD configuration. |
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source-ip ip-address |
Specifies the IP source name for the MLD configuration. |
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node-type host|router|switch |
Specifies the node type as host or router. |
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expires expires-number(s) |
Specifies the ageout time. |
Defaults None
Access CLI
History
|
Version 2.3 |
Command introduced. |
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Version 2.4.1 |
The parameter, switch, deprecated. The parameter, vnet, added. |
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Version 3.0.0 |
The parameter, l2-net, added. |
Usage Default behavior, when MLD is not configured, forwards multicast traffic to all the switch ports, impacting switch performance.
Examples To display MLD parameters for the local switch, use the following command:
CLI network-admin@switch > mld-show
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switch: |
spine01 |
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group-ipv6: |
ff02::1:ff11:1111 |
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host-ipv6: |
fe80::3636:3bff:fece:44f2 |
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vlan: |
100 |
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port: |
8,69 |
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source-ipv6: |
2001:db8::2:1 |