RSPAN through LAG

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  • Updated 3 years ago
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Hi everybody.

I'm stuck with RSPAN configuration. I have three switches (image below). I'd like to configure RSPAN through.




enable sharing 25 grouping 25-26 algorithm address-based L2

Is it right configuration?
create mirror "RSPAN"
configure mirror RSPAN to port 25 remote-tag 99
configure mirror RSPAN add port 20 ingress-and-egress

Or I should do something like?
create mirror "RSPAN"
configure mirror RSPAN to port 25,26 loopback-port 24 remote-tag 99
configure mirror RSPAN add port 20 ingress-and-egress

Moreover, I got this message when I tried to use second configuration example.
Error: Port 25 cannot be added to VMAN as untagged because the port is a tagged VMAN member and a tagged VLAN member.
Mirror-to ports could not be added to mirroring VMAN!
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eyeV

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Posted 3 years ago

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OscarK, ESE

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Because port 25 and 26 are an MLAG they are logically 1 single port. I think you should be able to your first option.
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eyeV

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Unfortunately no.
# enable mirror "RSPAN" 
Error: Port mirroring cannot be enabled on a trunk member port 25
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Alexandr P, Embassador

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From User Guide 15.7
"A mirror port cannot be a LAG."
It's from limitations.

Thank you!
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eyeV

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Thanks. I've read User Guide 15.4.