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

group-ip ip-address

Specifies the name of the IP group for the MLD configuration.

node-ip ip-address

Specifies the name of the IP host for the MLD configuration.

vnet vnet-name

Specifies the name of the VNET assigned to the MLD configuration.

l2-net l2-net-name

Specifies the name of the Layer 2 network.

vlan vlan-id

Specifies the ID of the VLAN for the MLD configuration.

port port-number

Specifies the number of the port for the MLD configuration.

source-ip ip-address

Specifies the IP source name for the MLD configuration.

node-type host|router|switch

Specifies the node type as host or router.

expires expires-number(s)

Specifies the ageout time.

Defaults   None.

Access   CLI

History   

Version 2.3

Command introduced.

Version 2.4.1

The parameter, switch, deprecated. The parameter, vnet, added.

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

switch:

spine01

group-ipv6:

ff02::1:ff11:1111

host-ipv6:

fe80::3636:3bff:fece:44f2

vlan:

100

port:

8,69

source-ipv6:

2001:db8::2:1

mld-router-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 is forwarded to all the switch ports, impacting switch performance.

Syntax   mld-router-show

node-ip ip-address

Specifies the name of the IP node for the MLD configuration.

vnet vnet-name

Specifies the name of the VNET assigned to the MLD configuration.

l2-net l2-net-name

Specifies the name of the Layer 2 network.

vlan vlan-id

Specifies the ID of the VLAN for the MLD configuration.

port port-number

Specifies the number of the port for the MLD configuration.

Defaults   None.

Access   CLI

History   

Version 2.3

Command introduced.

Version 2.4.1

The parameters, group-ip, source-ip, node-type, and expires, deprecated. The parameter, vnet, added.

Version 3.0.0

The parameter, l2-net, added.

Usage   Default behavior, when MLD Snooping is not configured, multicast traffic is forwarded to all the switch ports, impacting switch performance.

Examples  To display MLD router parameters for the local switch, use the following command:

CLI network-admin@switch > mld-router-show

mld-snooping-modify

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 you do not configure MLD Snooping, Netvisor forwards multicast traffic to all the switch ports, impacting switch performance.

Syntax   mld-snooping-modify

scope local|fabric

Modify the scope of MLD Snooping to local or fabric.

enable|disable

Enable, disable MLD Snooping. Default: disable

mldv1-vlans vlan-list

VLANs on which to enable snooping and use MLDv1 protocol. Default: none

mldv2-vlans vlan-list

VLANs on which to enable snooping and use MLDv2 protocol. Default 1 - 4092

snoop-linklocal-vlans vlan-list

Allow snooping of link-local groups (ff02::/16) on these vlans. Default 1 - 4092

snoop-nd-vlans vlan-list

Allow snooping of ND SN Multicast addresses (ff02::1:ff/104) on these vlans. Default 1 - 4092

query-interval seconds

Specify the interval between queries in seconds.

query-max-response-time seconds

Specify the maximum response time for a query.

Defaults   See above description

Access   CLI

History   

Version 2.3

Command introduced.

Version 2.4

The parameters, version and snoop-link, introduced.

Version 2.5.2

The parameters, version, snoop-linklocal, and snoop-nd deprecated.

The parameters, mldv1-vlans, mldv2-vlans, snoop-linklocal-vlans, and snoop-nd-vlans introduced.

Version 3.1.0

The parameters, query-interval and query-max-response-time, added.

Usage   When MLD Snooping is not configured, multicast traffic is forwarded to all the switch ports, impacting switch performance. Use this command to modify the scope of MLD Snooping, enable snooping on specific VLANs, link-local groups, or ND SN multicast addresses, or to disable snooping.

Examples  To modify the scope from local to fabric use the following syntax:

CLI network-admin@switch > mld-snooping-modify scope fabric


mld-snooping-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.

When MLD Snooping is not configured multicast traffic, by default, is forwarded to all the switch ports thus impacting switch performance.

Syntax   mld-snooping-show

Defaults   None.

Access   CLI

History   

Version 2.3

Command introduced.

Version 2.4

The parameters, version and snoop-link, introduced.

Version 2.5.2

The parameters, version, snoop-linklocal, and snoop-nd deprecated.

The parameters, mldv1-vlans, mldv2-vlans, snoop-linklocal-vlans, and snoop-nd-vlans introduced.

Version 3.1.0

The parameters, query-interval and query-max-response-time, added.

Usage   The default behavior, when MLD Snooping is not configured, multicast traffic is forwarded to all the switch ports, impacting switch performance.

Examples  To display the format for all options for the local switch, use the following command:

CLI network-admin@switch > mld-snooping-show format all

switch:

switch name

enable:

yes

mlvdv1-vlans

none

mldv2-vlans

1-4092

snoop-linklocal-vlans

1-4092

snoop-nd-vlans

1-4092

nvOS-managed-vlans

100

interop-v1-vlans

none

vlans

1-99,101-4092