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Questions tagged [mpls]

13 questions
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DPDK: MPLS packet processing

I am trying to build a multi-RX-queue dpdk program, using RSS to split the incoming traffic into RX queues on a single port. Mellanox ConnectX-5 and DPDK Version 19.11 is used for this purpose. It works fine when I use IP over Ethernet packets as…
raktim bhatt
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How to set up optional parameter in LDP Layer using scapy

I am trying to build LDPHello packets, but I am not able to add optional parameter like IPv4 Transport layer using scapy. I have done this: ip = IP(src=src_ipv4, dst= '224.0.0.2', proto=17, ttl=1) udp = UDP(sport=646, dport=646) hello =…
MSS
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Configuring LDP on mpls enabled router

I am trying to configure LDP on a mpls enabled router and I am using RIP as the underlying IGP. But the LDP neighborship is not coming up, when I replace RIP with OSPF it works fine. My question is can we use RIP or static routing while configuring…
Adarsh Patil
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Sending MPLS tagged packets from a Linux application

I have written some VPN software which now needs to be able to be able to tag de-tunnelled traffic with MPLS tags. I've looked at the source of Mausezahn (which can send MPLS packets) and it seems to construct the whole ethernet frame, using various…
fadedbee
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MPLS Implementation in Ryu [SDN]: Pingall 1/2 - How to fix it?

I am working on implemanting mpls in ryu, I have written the app using openflow actions: Push Mpls; Pop.. But I don't know why somehow I am getting only 1/2 of ping when pinging. As I am working in a looped topology, I used networkx in order to get…
nessrine khiat
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Issue with Juniper vMX14 route reflector not transmitting VRF

I am working on a project implementing Seamless MPLS on a Juniper vMX14 router. I have configured all the necessary configurations for MPLS routing, but I am having an issue with the route reflector. The route reflector doesn't seem to be working…
Manseur Dounia
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MPLS Implemented OpenFlow Iperf Testing

I have a mininet topology that consists of two hosts and two ovs switches. h1-eth0 is connected to s1-eth1 and h2-eth0 is connected to s2-eth2 and s1-eth2 and s2-eth1 is also connected. h1 is for client and h2 is for server. In flows, ARP packets…
Sertan Pekel
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Strip MPLS header using DPDK

I am trying to strip MPLS header using DPDK, I have use the flow_filtering sample application as starting and tried to add another item in the pattern: Ethernet MPLS IPv4 END and I added the following…
Tanzeel Ahmed
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Does Layer Distribution Protocol (LDP) on port 646 need to be open to the Internet? What are the risks associated with it?

I am a security engineer trying to understand the risks of having LDP exposed to the Internet on port 646. I cannot find much information available on the Internet documenting this. Any information including further reading links would be much…
Justin Massey
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NGINX as Transparent Reverse Proxy via Upstream Proxy to External Host Issues

Due to a mess of work networks i need to setup an NGINX reverse proxy to an external website that goes via the company MPLS proxy. This is so other apps can point to an internal DNS address via HTTPS and then that address can either point to an…
Cyber Axe
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Can't able to ping between LER and LSR under MPLS test-bed setup in linux

I have set LDP session running under MPLS test-bed setup in my ubuntu. however, on Ping, able to see ICMP request packets are hitting to Destination interface, but couldn't able to get ICMP Reply. On capturing packets, observed LDP packets (Hello…
dharmendra kariya
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Azure ExpressRoute Security

I often see Azure ExpressRoute is assumed to provide VPN level security. However, my understanding is that it uses MPLS and thus only provide faster routing - there is no additional security (like encryption) there - it's just like a toll lane. The…
MNWA
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I have a pcap with two MPLS headers . i observe the match criteria for every field in both the MPLS headers are similar . How do I differentiate?

I have a pcap with two MPLS headers . i observe the match criteria for every field in both the MPLS headers are similar . How do I differentiate between the two MPLS headers ? Is it possible to achieve this via Wireshark or tshark ? If it is…
Giridhar Radhakrishnan
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