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Transmission Network

Created: Nov 23, 2021 22:06:07Latest reply: Nov 24, 2021 03:21:04 521 12 0 0 0
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What do PWE3 and L2 stand for in this networking diagram ?
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Malik3000
MVE Created Nov 24, 2021 00:48:07

Hello,


in Ethernet network ,Ethernet link could be in:-

1-   Native ethernet similier to when you make direct connect between switches or direct connect between PC and switch that called L2 .


2-MPLS :- that means to assign IP for the ports connected between the NEs then create Tunnels between these ports , after that you must create small tunnel inside the big tunnel called PW for each service you create .

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AndresMoreno
AndresMoreno Admin Created Nov 23, 2021 22:06:50

Hello! Thank you for contacting us.
We are working on an answer for you.
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Malik3000
Malik3000 MVE Created Nov 24, 2021 00:48:07

Hello,


in Ethernet network ,Ethernet link could be in:-

1-   Native ethernet similier to when you make direct connect between switches or direct connect between PC and switch that called L2 .


2-MPLS :- that means to assign IP for the ports connected between the NEs then create Tunnels between these ports , after that you must create small tunnel inside the big tunnel called PW for each service you create .

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  • x
  • convention：
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liqiang185
liqiang185 Admin Created Nov 24, 2021 00:56:41

Dear friend!
According to the screenshot, L2 and PWE3 belong to different link attributes. In the figure, the links in the L2 area belong to the client-side links (access layer). The links in the PWE3 area belong to the links (at the transport layer) on the transport network.

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epistemophile
epistemophile Created Nov 24, 2021 03:21:04

Posted by Malik3000 at 2021-11-24 00:48 Hello,in Ethernet network ,Ethernet link could be in:-1-   Native ethernet similier to when you ma ...
thank you. But what does PWE3 stand for ?
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Malik3000
Malik3000 Created Nov 24, 2021 03:27:01 (1) (0)
pseudo wire emulation 3  
epistemophile
epistemophile Reply Malik3000  Created Nov 24, 2021 03:28:42 (0) (0)
ok ok. So if there is interconnection between multiple NE's in the transmission network can we call that interconnection as PW ?  
epistemophile
epistemophile Reply Malik3000  Created Nov 24, 2021 03:32:05 (0) (0)
Like the link between NE1 and NE7 is one MPLS Tunnel ?  
Malik3000
Malik3000 Reply epistemophile  Created Nov 24, 2021 03:36:30 (1) (0)
no
the ports toward NEs called NNI (Network Network interface )between these ports no need to establish any thing but fiber .
except if you have NEs and the connection between the NNI ports is Ethernet and you choose to use MPLS technology , then you must create Tunnel and inside the Tuneel PW for each service you create between these NEs  
epistemophile
epistemophile Reply Malik3000  Created Nov 24, 2021 03:49:56 (0) (0)
MPLS is not used when there is optical fibre connection between NE's ?  
Malik3000
Malik3000 Reply epistemophile  Created Nov 24, 2021 03:51:43 (1) (0)
Ethernet can be over Fiber optic not only on UTP cables  
epistemophile
epistemophile Reply Malik3000  Created Nov 24, 2021 04:04:37 (0) (0)
oh ok ok. in the above image all rings are GE rings. So can we say that they are using MPLS ?  
Malik3000
Malik3000 Reply epistemophile  Created Nov 24, 2021 04:46:05 (0) (0)
You can make them work as Native ethernet , so you dont need to operate MPLS or you can apply MPLS so you need to create Tunnels and pw  
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