This article provides information about the output of the show multicast statistics command on MX Series devices, and explains why the interface data counters might be delayed up to 60 seconds.
show multicast statistics
The interface data counters in the show multicast statistics command output might be delayed up to 60 seconds.
{MASTER} lab@router> show multicast statistics Instance: master Family: INET Interface: local Routing protocol: Mismatch error: 0 Mismatch: 0 Mismatch no route: 0 Kernel resolve: 0 Routing notify: 0 Resolve no route: 0 Resolve error: 0 Resolve filtered: 0 Notify filtered: 0 In kbytes: 0 In packets: 0 Out kbytes: 0 Out packets: 0 Interface: xe-10/0/0.0 Routing protocol: PIM Mismatch error: 0 Mismatch: 4 Mismatch no route: 0 Kernel resolve: 3 Routing notify: 0 Resolve no route: 0 Resolve error: 0 Resolve filtered: 0 Notify filtered: 0 In kbytes: 440707905 In packets: 332894222 <<< Counters update Out kbytes: 0 Out packets: 0 every 60 sec Interface: xe-10/1/0.0 Routing protocol: PIM Mismatch error: 0 Mismatch: 0 Mismatch no route: 0 Kernel resolve: 5 Routing notify: 0 Resolve no route: 0 Resolve error: 0 Resolve filtered: 0 Notify filtered: 0 In kbytes: 0 In packets: 0 Out kbytes: 0 Out packets: 0 Resolve requests on interfaces not enabled for multicast 0 Resolve requests with no route to source 0 Routing notifications on interfaces not enabled for multicast 0 Routing notifications with no route to source 0 Interface mismatches on interfaces not enabled for multicast 0 Group memberships on interfaces not enabled for multicast 0
{MASTER} lab@router> show multicast statistics Instance: master Family: INET Interface: local Routing protocol: Mismatch error: 0 Mismatch: 0 Mismatch no route: 0 Kernel resolve: 0 Routing notify: 0 Resolve no route: 0 Resolve error: 0 Resolve filtered: 0 Notify filtered: 0 In kbytes: 0 In packets: 0 Out kbytes: 0 Out packets: 0 Interface: xe-10/0/0.0 Routing protocol: PIM Mismatch error: 0 Mismatch: 4 Mismatch no route: 0 Kernel resolve: 3 Routing notify: 0 Resolve no route: 0 Resolve error: 0 Resolve filtered: 0 Notify filtered: 0 In kbytes: 440769777 In packets: 332940954 <<< Counters updated Out kbytes: 0 Out packets: 0 after 60 secs; Interface: xe-10/1/0.0 remain unchanged Routing protocol: PIM Mismatch error: 0 for next 60 secs Mismatch: 0 Mismatch no route: 0 Kernel resolve: 5 Routing notify: 0 Resolve no route: 0 Resolve error: 0 Resolve filtered: 0 Notify filtered: 0 In kbytes: 0 In packets: 0 Out kbytes: 0 Out packets: 0 Resolve requests on interfaces not enabled for multicast 0 Resolve requests with no route to source 0 Routing notifications on interfaces not enabled for multicast 0 Routing notifications with no route to source 0 Interface mismatches on interfaces not enabled for multicast 0 Group memberships on interfaces not enabled for multicast 0
The query to retrieve information for the show multicast statistics command from the Packet Forwarding Engine (PFE) is route based. The stats from the multicast route are queried every 60 seconds and the reverse path forwarding (RPF) and downstream interface stats are updated from the PFE response. This causes the 60-second delay.
This behavior is expected by design. No action is required.