Transcript Experience with cable technology

SwiNOG-3
Experience with cable technology
Michel Renfer, CCNA
Network Systems Engineer
[email protected]
19. Sept. 2001
LAN Services AG...
• LAN Services is a regional carrier who operates in the
region between Biel, Berne and Olten.
• Upstream connectivity is currently provided by
Cable&Wireless (AS1273), Sunrise (AS6730) and IPPlus (AS3303) with a cumulative bandwidth of 24
Mbit/s.
• Connections between our nodes are mostly built on
Besonet ATM backbone. (Bern Solothurn Netz AG).
Most Besonet shareholders are also QuickLine
partners.
Besonet...
• Besonet has built a dark fibre network in their
coverage area.
• Transport network for tv/radio signals, video, voice and
data.
QuickLine...
• QuickLine is a partnership model from LAN Services in
cooperation with several cable operators to provide
internet access over cable.
Provisioning / Billing / Implementation
LAN Services AG
Operation of the IP network
LAN Services AG
CMTS operating
LAN Services AG
Cable plant operating
Cable operator (QuickLine partner)
QuickLine partner...
GGS (Oensingen)
GA Region Grenchen
Industrielle Betriebe Langenthal
EWK Herzogenbuchsee
Energie Seeland AG (Lyss)
EW Aarberg
Localnet AG (Burgdorf)
Gem. Münchenbuchsee
Gem. Belp
CMTS in use
• Terayon CMTS with S-CDMA (7 systems)
Teralink Controller
Teralink Gateway
• Cisco uBR CMTS with DOCSIS 1.0+ (2 systems)
Cisco uBR 7223
Cisco uBR 7114
Major layer 1 / 2 issues
• Not all cable plants are already upgraded to support 2way communications.
• Inhouse installations are often in a catastrophic state.
• Customers who are making their own HF installations.
• Grounding problems
• S-CDMA and DOCSIS are not compatible
(Note: The DOCSIS 2.0 standard will take parts of
both protocols and provide backward compatibility)
... and what we/our partners do!
• Fast 2-way upgrade of all remaining 1-way cable
plants
• Improving the stability of the cable plants
• Adding filters for „bad“ homes
• Adding filters to avoid grounding problems
• Moving the upstream channels over 30 MHz so most
of the ingress issues will go away.
• Adding (strong!?) regulations which homes can and
which cannot connected without modifications to the
2-way cable plant.
Major layer 3 issues...
• Bandwidth usage!!!!
• Wrong configuration of customer end devices (most
customers dosen‘t have any know-how about
networking).
• Security („Script kiddies“ playing with tools like back
orifice, ...)
• Delay sensitive traffic like online gaming
... and what we do!
• Adding more upstream bandwidth
• Finding the best way to secure...
a.) our customers
b.) our network and equipement
c.) the outside world
• Strict handling of our AUP when issues with our
customers occurs.
• QoS enhancements to avoid problems with delay
sensitive traffic
Further developement
• Connecting new QuickLine partners to our network.
• Few partners needed a second CMTS which will
deployed on top of the Cisco uBR plattform.
• Replacing remaining leased lines with dark fibre
connections provided trough our cable partners.
• Connecting AS-LAN to TIX
• Improving connectivity to other cable internet
providers trough direct peerings.
• MPLS
• Trials of new services like video on demand, ...
Appendix A
• LAN Services AG
• QuickLine
• Besonet
http://www.lan.ch
http://www.quick-line.ch
http://www.besonet.ch
• Cisco uBR
• Terayon
• Cablelabs
http://www.cisco.com/go/cable
http://www.terayon.com
http://www.cablelabs.com