Resume of Csaba Mate

You can reach me on email or cell-phone: .

Skills

Networking: OSI, TCP/IP, IPsec, VPN, QoS, BNG, IPoE, PPPoE, Multicast, PIM, IGMP, MSDP, VXLAN, PBB, VPLS, EVPN
Routing: RIP, RIPv2, RIPng, OSPF, OSPFv3, EIGRP, IS-IS, BGP, MP-BGP, MPLS, LDP, RSVP-TE, SR-MPLS, SRv6, MVPN
Switching: VLAN, VTP, STP, RSTP, MSTP, WLAN, LACP, PaGP
Programming: Python, Tcl/tk, bash, C, Java, Pascal, Basic, Assembly for various CPUs
Dataplane programming: p4.org, nplang.org, DPDK, eBPF/XDP
OSes: Cisco IOS-XR, Cisco IOS-XE, Cisco NxOS, Cisco IOS, Huawei VRP, Juniper JunOS, Linux
Certifications: CCIE-SP, CCIE-RS, #19295
Education: programmer-mathematician degree from University of Szeged

Past experience

2024-: Got a job at digi as senior network engineer. They are a local cable and mobile telco serving mostly the citizens. Here I was tasked with network modernization and development tasks.

2015-2023: Got a job at hbone as senior network engineer. They are the local NREN connecting the universities, intermediate schools country-wide. Here I was tasked with various network modernization and network development tasks like converting the core network from IOS-XE to IOS-XR, introduction of seamless MPLS, SR-MPLS and LDPv6 in the core, design and deploy a DDOS filtering system, to implement their public cloud from the networking side, or to bring up their mass WLAN offering. Starting with GN4-3, I got involved into an EU-EC funded research project to provide a dataplane to whiteboxes around the intel tofino ASICs. Lately I got involved to IETF standardization work too.

2005-2014: Got a job at lnx ltd, later kfki ltd, nowadays known as t-systems.hu as a network engineer. they are a cisco partner and they acted like a value added reseller. During that time I was tasked with design and implementation and external supporter of various enterprise and telco projects.

Professional career in details

2007: various telco core projects based on cisco
2007: onyf.hu wan design and implementation based on cisco
2008: various telco core projects based on cisco
2008: audi.hu lan design and implementation based on cisco
2009: various telco core projects based on cisco
2009: orfk wan design and implementation based on cisco
2009: vpop wan design and implementation based on cisco
2009: kum lan wan design and implementation based on cisco
2009: mgszh wan design and implementation based on cisco
2010: various telco core projects based on cisco
2010: hbone core redesign based on cisco
2010: hungarian air traffic control (bud-air public aviation) lan wan design based on cisco
2011: various telco core projects based on cisco
2011: t-systems.hu started to sell a re-branded freeRouter
2012: various telco core projects based on cisco
2012: znet core design and implementation based on cisco
2012: country-wide schengen mobile backup design and implementation based on freeRouter rebranded as t-systems router
2013: various telco core projects based on cisco
2014: hbone turned off layer2 in the capital rings citywide based on cisco
2015: hbone traffeng design and implementation based on cisco
2015: hbone bgp redesign based on freeRouter as route reflector and aggregate/bogon/flowspec originator
2016: hbone ipv6 ldp design and implementation based on cisco
2016: hbone segment routing design and implementation based on cisco
2017: hbone rpki design and implementation based on cisco and ripe validator
2017: hbone ddos protection design and implementation on cisco and netscout.com/arbor
2018: implemented, interop-tested, then co-author and still using bgp compressed updates in freeRouter
2018: sulinet redesign and implementation involving 5k cisco cpe in an mpls vpn for hbone
2018: replaced hbone 3rd route reflector to a virtual cisco
2018: hbone igp and bgp checks now based on freeRouter nrpe exports to remove snmp from hbone
2018: hbone segment routing/mpls design and implementation on cisco
2018: hbone address spoofing detector, own prefix visibility detector on freeRouter
2019: hbone upgrade their purpose built cloud installations cloud4education services to openstack on cisco
2019: looking glass on freeRouter: "telnet lg.hbone.hu"
2019: new geant eu/ec funded research&development project gn4-3-wp6: rare/freeRtr, an api to export all the computed tables and necessary configurations to whitebox routers/switches
2020: participation in the yearly internet engineering task force hackathons with a next protocol of team's choice
2020: various design, architectural or occassional troubleshooting, consultancy services to hbone on cisco ios xr, xe, nxos and openstack integration
2020: protocol level reportings, checks from the running core network of hbone on freeRouter
2021: participation in the yearly internet engineering task force hackathons with a next protocol of team's choice
2021: various design, architectural or occassional troubleshooting, consultancy services to hbone on cisco ios xr, xe, nxos and openstack integration
2021: protocol level reportings, checks from the running core network of hbone on freeRouter
2022: participation in the yearly internet engineering task force hackathons with a next protocol of team's choice
2022: various design, architectural or occassional troubleshooting, consultancy services to hbone on cisco ios xr, xe, nxos, aci-apic and openstack integration
2022: initial bringup of hbone aci-apic based cloud
2022: participate in designing and running acceptance tests of the hbone seamless mpls segments
2022: protocol level reportings, checks from the running core network of hbone on freeRouter
2023: new geant funded eu/ec research&development project gn5-1-wp6: rare/freeRtr, an api to export all the computed tables and necessary configurations to whitebox routers/switches
2023: participation in the yearly internet engineering task force hackathons with a next protocol of team's choice
2023: various design, architectural or occassional troubleshooting, consultancy services to hbone on cisco ios xr, xe and nxos, aci-apic and openstack integration
2023: protocol level reportings, checks from the running core network of hbone on freeRouter
2023: realtime fullbgp powered whatsmy-aspath extension to my whatsmyip at www.nop.hu from the help of hbone fullbgp on cisco ios xr then a chain of freeRouters
2024: handling split of the mobile business to pro-m
2025: protocol level redundancy (ha) in freeRouter
2025: in preparation for the merger with vodafone convert isp core to isis from ospf

Professional certifications

2005: certified as cisco CCNA
2006: certified as cisco CCNP
2007: Service Provider cisco CCIE certification number #19295
2008: Enterprise (Routing&switching) cisco CCIE certification with the same number #19295
2011: cisco CCIE recertification
2013: cisco CCIE recertification
2015: cisco CCIE recertification
2016: 10 years of active 2x cisco CCIE, now no need to recertify anymore to keep the number
2017: cisco CCIE recertification
2019: cisco CCIE recertification
2021: cisco CCIE recertification
2023: cisco CCIE recertification
2025: cisco CCIE recertification

i speak English and Hungarian equally good especially when it comes to tech.

Education, self-development

to become a better engineer by better understand the protocols that empower the internet

1979: i was born in late october in Budapest, Hungary, Eastern Europe
1986: studied at Bikszadi street elementary school
1990: got my sharp pc1500 with a color pen printer and a tape drive
1991: got my second sharp pc1500 without the optional accessories so i started programming it in basic language
1992: studied at Gardonyi Geza street elementary school
1994: won a programmer "competition" at Leovei Klara highschool so i started on programmer faculy
1995: started ProgiBBS and SzuNET, a country-wide alternative to fidonet.org based on BugOS
1996: got my driving license
1998: finished at elementary school
1998: first place at country-wide innovocion competition with BugOS project
1998: started at Gabor Denes, now university, but i left it
1999: registered a tcp/udp-ip port 2554 from iana
1999: third place at country-wide innovociot competition with virtual circuits on BugOS
1999: started programmer/mathematics at elte.hu university, but i left it
2000: started my server www.nop.hu on BugOS
2000: started programmer/mathematics at University of Szeged then a recorded presentation about dh, rsa, dsa & ec (hungarian tech text :)
2001: internet coffee at Vaci street, Budapest/Hungary, called AMIN based on BugOS
2001: 6th european congress for nurses interested in stomacare webpage hosting based on BugOS
2002: the BEE country-wide ordering system for grocery stores, based on BugOS
2002: found a pos terminal near the recycle bin
2002: sztaki.hu ordered the development of a x25-tcp gateway based on BugOS, to sell it to otpbank.hu
2003: started cisco CCNA course at university
2003: own terminal server at the university labour on BugOS
2004: started lectouring at university cisco CCNA course
2005: ipv6 multicast research&development at university project
2005: given lecture hours at university's cisco CCNA course
2009: new project: freeRouter
2010: full-bgp feed from hbone based on freeRouter
2013: hbone use freeRouter as rr sanity checker, hijack detection, igp reportings, etc
2014: hbone use freeRouter as primary and backup route reflectors
2015: freeRouter interop test with virtual cisco and juniper routers at greant ovs and p4 testlabs
2015: presentation about freeRouter at ripe71
2016: presentation about freeRouter at peering days
2018: hbone dedicated vpn route reflectors on freeRouter
2019: probe network on freeRouter
2019: p4lang api design in rare/freeRtr
2019: p4lang/bmv2 implementation in rare/freeRtr
2020: packet forwarding engine with p4lang/dpdk for rare/freeRtr
2020: p4lang/libpcap implementation in rare/freeRtr
2021: packet forwarding engine with intel tofino 1 2 3 p4lang programmable asic for rare/freeRtr
2021: packet forwarding engine with xdp/ebpf (in-kernel packet forwarding) for rare/freeRtr
2022: improvements here and there to rare/freeRtr, thanks to geant
2022: helping hbone to measure their cisco maximum bgp peer limits on freeRouter
2022: implementated and co-author of an ietf bgp rfc9832 about colorful labelled unicast for plane-a-b mpls cores on freeRouter
2022: develop on the nvidia doca dpu as dpdk forwarder/prefilterer
2023: helping hbone to bump their freeRouter installations to get upgraded at the os levels without a full vm reinstall
2023: implementated an ietf bgp draft, about colorful labelled unicast for plane-a-b mpls cores on freeRouter
2023: improvements here and there to rare/freeRtr and all of it's dataplanes, thanks to geant
2023: rare/freeRtr team got invitation to the eantc.de world sd-mpls congress
2023: more info about the eantc.de event at the report, bgp-ct with rare/freeRtr-juniper in a 4 box topology, explained in a short post and video
2023: participation in the yearly internet engineering task force hackathon plugfest about BIER with nokia and juniper
2024: improvements here and there to rare/freeRtr and all of it's dataplanes
2025: improvements here and there to rare/freeRtr and all of it's dataplanes

my hobby is developing freeRouter and tech-blogging about the bits and bytes enpowering the inter-networks because i can learn a lot from it about the protocols we use worldwide...