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Imaging Using MulticastFailsIf Routed

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TitleImaging Using MulticastFailsIf Routed
Symptoms
  • Imaging with multicast works if server and client are on the same VLAN
  • Imaging fails if server and client are on differnt VLANs
  • Multicast test tool works with client and server on a different VLAN
  • Imaging works using unicast
Environment
EOS
S-Series
K-Series
7100-Series
Securestacks
Cause
Imaging server using Well Known Multicast address 224.0.0.252

The range of addresses between 224.0.0.0 and 224.0.0.255, inclusive, is reserved for the use of routing protocols and other low-level topology discovery or maintenance protocols, such as gateway discovery and group membership reporting. Multicast routers should not forward any multicast datagram with destination addresses in this range, regardless of its TTL. 
https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xml
Resolution
Use Non Well-Known multicast address
 
Additional notes

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