![What is downstream and upstream router in MPLS? |MPLSVPN - Moving Towards SDN and NFV Based Networks What is downstream and upstream router in MPLS? |MPLSVPN - Moving Towards SDN and NFV Based Networks](http://3.bp.blogspot.com/_n3Sbk_2ZV-g/TCJEEpWIHKI/AAAAAAAAAaw/NTEZefqwsuA/s1600/downstream+and+upstream.jpg)
What is downstream and upstream router in MPLS? |MPLSVPN - Moving Towards SDN and NFV Based Networks
![Multiprotocol Label Switching Networks > A Network Administrator's View of Multiservice Networks | Cisco Press Multiprotocol Label Switching Networks > A Network Administrator's View of Multiservice Networks | Cisco Press](https://www.ciscopress.com/content/images/chap3_1587051591/elementLinks/fig05.jpg)
Multiprotocol Label Switching Networks > A Network Administrator's View of Multiservice Networks | Cisco Press
![3S-Technologies on Twitter: "What is a Label Switch Router (LSR) ? Check our MPLS tutorial at https://t.co/X8ao7AIwTc #ComputerNetworking https://t.co/9Am0EyowUH" / Twitter 3S-Technologies on Twitter: "What is a Label Switch Router (LSR) ? Check our MPLS tutorial at https://t.co/X8ao7AIwTc #ComputerNetworking https://t.co/9Am0EyowUH" / Twitter](https://pbs.twimg.com/media/Ci6Hd6AXIAAQelg.jpg)
3S-Technologies on Twitter: "What is a Label Switch Router (LSR) ? Check our MPLS tutorial at https://t.co/X8ao7AIwTc #ComputerNetworking https://t.co/9Am0EyowUH" / Twitter
![1 MPLS Architecture. 2 MPLS Network Model MPLS LSR = Label Switched Router LER = Label Edge Router LER LSR LER LSR IP MPLS IP Internet LSR. - ppt download 1 MPLS Architecture. 2 MPLS Network Model MPLS LSR = Label Switched Router LER = Label Edge Router LER LSR LER LSR IP MPLS IP Internet LSR. - ppt download](https://images.slideplayer.com/19/5765861/slides/slide_2.jpg)
1 MPLS Architecture. 2 MPLS Network Model MPLS LSR = Label Switched Router LER = Label Edge Router LER LSR LER LSR IP MPLS IP Internet LSR. - ppt download
![Architecture-of-IP-MPLS-MPLambdaS-optical-network-LER-label-edge-IP-router- LSR-label | Onyxes Technologies Architecture-of-IP-MPLS-MPLambdaS-optical-network-LER-label-edge-IP-router- LSR-label | Onyxes Technologies](https://onyxes.com/wp-content/uploads/Architecture-of-IP-MPLS-MPLambdaS-optical-network-LER-label-edge-IP-router-LSR-label.png)