Displays multicast cache information.
The display can be limited to entries for specific VLANs or groups, and it can be limited to specific types of entries, such as those created by snooping protocols, PIM, or MVR.
| ipv4 | Specifies the IPv4 address family. |
| ipv6 | Specifies the IPv6 address family. |
| name | Specifies a VLAN (Virtual LAN) name. |
| grpaddressMask | Specifies a multicast group address and mask. |
| sourceIP | Specifies the source IP address for a multicast group. |
| snooping | Limits the display to cache entries created by PIM or IGMP (Internet Group Management Protocol) snooping. |
| pim | Limits the display to cache entries created by PIM. |
| mvr | Limits the display to cache entries created by MVR. |
| summary | Specifies the summary display format. |
Displays information for all entries in the multicast cache.
If the configure forwarding ipmc lookup-key mac-vlan command is configured, the following message displays: displayed:
NOTE: Traffic is forwarded based on MAC address. Actual traffic forwarded based on the installed MAC address need not be the same displayed in this command, if overlapping IP multicast addresses are used in the network.
If the mode is mixed-mode, the following message displays:
NOTE: Traffic could be forwarded based on MAC address. Actual traffic forwarded based on the installed MAC address need not be the same displayed in this command, if overlapping IP multicast addresses are used in the network.
The following command displays all multicast cache information:
# show mcast cache Snooping/MVR Cache Timeout: 300 sec Type Group Sender Age InVlan snoop 225.1.1.1 222.222.222.222 17 snvlan Vlan Port Vid snvlan 2 400 23 400 snoop 224.0.0.5 100.1.2.2 2 pmvlan2 Vlan Port Vid pmvlan2 4 402 snoop 224.0.0.5 100.1.3.3 17 pmvlan3 Vlan Port Vid pmvlan3 23 403 snoop 224.0.0.13 100.1.2.2 11 pmvlan2 Vlan Port Vid pmvlan2 4 402 snoop 224.0.0.13 100.1.3.3 14 pmvlan3 Vlan Port Vid pmvlan3 23 403 pim 226.1.1.1 100.1.1.12 0 pmvlan1 Vlan Port Vid pmvlan2 4 402 pmvlan3 23 403 Multicast cache distribution: 5 entries from Snooping 0 entries from MVR 1 entries from PIM Total Cache Entries: 6
The following command displays summary cache information for VLAN pmvlan1:
# show mcast cache vlan pmvlan1 summary Snooping/MVR Cache Timeout: 300 sec ==============MULTICAST CACHE SUMMARY============== Multicast cache distribution: 5 entries from Snooping 0 entries from MVR 1 entries from PIM pmvlan1: Multicast cache distribution: 0 entries from Snooping 0 entries from MVR 1 entries from PIM Total Cache Entries: 6 Total Cache Entries for VLAN pmvlan1: 1
This command was first available in ExtremeXOS 12.1.
This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.
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