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protocol based VLAN not working

protocol based VLAN not working

Wanderley_Benac
New Contributor
Configuration done to perform packet filter based on "Protocol Based VLAN", traffic was captured via mirroring and I see packets are not forwarding to correct VLAN.

Configuration for port 7:
Summit48si:18 # show port 7 vlan info
Name VID Protocol Addr Flags Proto Ports
Payload 333 10.10.20.130 /25 ------f------- mnet 11/20
OM_Node 332 10.10.20.50 /28 v-----f------- ANY 10/20
OM_RPP 192 192.168.0.2 /24 ------f------- mnet 11/20
Internal 46 ------------------ -------- p1 7/36

Mirror Results:
1) Using "enable mirror add port 7 vlan "Payload" I just see traffic to network 10.10.20.128/25. There is no traffic from network 10.10.20.128/25

2) Using "enable mirror add port 7 vlan OM_Node" I am able to see traffic from network 10.10.20.128/25, but traffic is been received by different VLAN than expected which proves mnet protocol based is not working for some reason!

Additional Information:
- It happens for swiches Summit 48si running EOS "7.8.4.1 patch1-r4" & EOS "7.8.4.1".
- "enable multinet" is configured
- "create protocol mnet" is configured

Someone can help me uinderstand what is wrong?
Thanks in advance,
Wanderley Benacchio Junior

12 REPLIES 12

Hi Brandon,

there seem to be examples using an "mnet" protocol filter as a dummy in the ExtremeWare 7.8 User Guide regarding Multinetting. But I have never used this feature and I do not know why this dummy protocol is needed.

I would suggest Wanderley to take a look at the examples there and try to follow them as close as possible.

Erik

Erik_Auerswald
Contributor II
Hi Wanderley,

as far as I understand it, you need to configure the manually created protocol with name mnet:
configure protocol mnet PARAMETERSThe parameters describe the layer 2 (Ethernet) values that define this protocol.

I am quite sure that this mechanism does not consider IP addresses.

Br,
Erik

Wanderley_Benac
New Contributor
Hi Brandon,

I suppose mnet is a predefined protocol where is performed a comparation of Packet Source IP Address against VLAN network and in case it matches packet will be addmited on that VLAN. Anyway see printout for mnet protocol:
SW# show protocol mnet
Protocol Name Type Value
---------------- ----- ------
mnet
SW#

Wanderley_Benac
New Contributor
Hi Henrique,

Port 7 is added to all VLANs as untag. That is why we need "protocol based" to coorectly decide to which VLAN packet shall be addimited.

I would say thanks for your time & help 😉

As I have commented with Brandon, I suppose "mnet" is a predefined protocol where is performed a comparation of Packet Source IP Address against VLAN network and in case it matches packet will be addmited on that VLAN, but I do not see so much references to "mnet".
Do you have docs that explain how "mnet" works?
When I do a "mnet" printout I see this:

SW# show protocol mnet
Protocol Name Type Value
---------------- ----- ------
mnet
SW#
GTM-P2G8KFN