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Hllrdm
Contributor

IP multicast routing failed (missing OS route)

We have encountered a problem that our wifi router sends a lot of packets to the address (239.255.255.250) with IP multicast routing failed (missing OS route).
I read in sk that you need to configure the pim/igmp interfaces.
I configured the pim and igmp interfaces but wifi does not work and we still see drops.

Can IP multicast routing failed (missing OS route) cause my wifi to not work? How can we fix it?

show pim interfaces

Status flag: V - virtual address option enabled
Mode flag: SR - state refresh enabled

Interface Status State Mode DR Address DR Pri NumNbrs
WAN.999 Up DR sparse External IP 1 0
LAN2.110 Up DR sparse Internal IP 1 0

show igmp interfaces

IGMP Interface State

Interface LAN2.110
Flags: Querier
IGMP Version: 2
Loss Robustness: 2
Query Interval: 125
Query Response Interval: 10
Last Member Query Interval: 1
Multicast Protocol(Instance): PIM(0)
Advertise Address: Internal IP
Number Group Joins: 224
Number Group Active: 10
Next Membership Query: 59
Querier Up Time: 44972

Interface WAN.999
Flags: Querier
IGMP Version: 2
Loss Robustness: 2
Query Interval: 125
Query Response Interval: 10
Last Member Query Interval: 1
Multicast Protocol(Instance): PIM(0)
Advertise Address: Expertal IP
Number Group Joins: 2
Number Group Active: 2
Next Membership Query: 16
Querier Up Time: 515

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2 Replies
G_W_Albrecht
Legend Legend
Legend

Better open a SR# with TAC to get this resolved !

CCSP - CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist
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SmoerKing
Explorer

did you get this to work ?

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Epsum factorial non deposit quid pro quo hic escorol.

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