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Brocade FastIron, FCX, ICX, and TurboIron Diagnostic Reference 167

53-1002965-01

MLD snooping debug commands

Multicast Listener Discovery (MLD) discovers multicast listeners, or nodes that want to receive

multicast packets on directly attached links. MLDv2 supports source filtering, the ability of a node

to send reports on traffic that is from a specific address source or from all multicast addresses

except the specified address sources. The information is then provided to the source-specific

multicast (SSM) routing protocols such as PIM-SSM.

The following commands display information related to the MLD snoop debugging.

debug mld-snoop add-del-oif all

Syntax: [no] debug mld-snoop add-del-oif all

This command displays information about the addition or deletion of all the OIFs that are MLD

snooping-enabled.

Brocade# debug mld-snoop add-del-oif all

mldsnoop add-del-oif all enabled

Brocade# Del e1/1/23 from (0x0 0x230005) vlan 130

Del e1/1/23 from (0x0 0x230004) vlan 130

Del e1/1/23 from (0x0 0x230003) vlan 130

Del e1/1/23 from (0x0 0x230002) vlan 130

Del e1/1/23 from (0x0 0x230001) vlan 130

Add e1/1/23 to (0x0 0x230001) vlan 130

Add e1/1/23 to (0x0 0x230002) vlan 130

Add e1/1/23 to (0x0 0x230003) vlan 130

Add e1/1/23 to (0x0 0x230004) vlan 130

Add e1/1/23 to (0x0 0x230005) vlan 130

debug mld-snoop clear

Syntax: [no] debug mld-snoop clear

This command clears all the MLD snooping debug settings.

debug mld-snoop error

Syntax: [no] debug mld-snoop error

This command displays the MLD snooping multicast error messages. Command output resembles

the following example.

Brocade# debug mld-snoop error

monitor mldsnoop error

Brocade# MLD: Error : Ignoring MLD version 2 Report pkt due to version mismatch ,

pkt S=fe80::1, on VL130 (phy e1/1/2), mld_size=28

MLD: Error : Ignoring MLD version 2 Report pkt due to version mismatch , pkt