Transcript CS section v6x - Indico

Communication
Support
Section
IT Dept. CS group
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Network & Telecoms services
•
CERN’s networks
−
−
−
−
•
Three distinct networks with very high performance routers
−
−
•
www.cern.ch/it
Platform to allow ISPs to interconnect between each other
Key figures
−
−
−
−
−
−
−
−
−
−
CERN IT Department
CH-1211 Genève 23
Switzerland
180+ Routers: Brocade in the CERN COREs + HP edges
Cisco in the External Network
CIXP (CERN Internet Exchange Point)
−
•
Handle both the physics data and “traditional” traffic
Support for a larger number of users on-site
Large diversity of connected devices: Desktops (Windows, Linux, Mac), industrial equipment
(PLCs, etc.) , In-house developed devices, etc.
Multi-vendor site using only standards
First international 100 GBps links with our new data centre in Budapest
200 Gbps of WAN connectivity
Core: 6 Tb/s for data processing
3600+ switches
75’000 active user devices
400+ starpoints
5’000 km of fibers (CERN owned)
60 100GBps ports
750+ 10Gbps ports
70’000 Gigabit ports
F. Chapron, ETRA @ CERN, slide 2
Communication Support Section
•
Network and Telecom Operation (NetCom)
–
–
‒
–
–
–
–
•
Fixed telephony Services
–
–
–
–
–
–
–
–
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Operation of IP and telecom networks
75 000 active user devices
18000 network connectivity requests per year
~2000 GSM changerequests per year
Incident management (12000 cases per year)
Advanced network and telecom support
Main project : focus on core operational tasks
PABX network comprising 20 000 users
Interconnected with 5 operators (least cost routing)
Telephone Switchboard
Call centers (Service Desk, IT helpdesk, CCC, Fire brigade)
Audio conference services
 Traditional services on PABX
 SIP based
IP telephony services
 IP Phones / Soft phones
Emergency phones
Main project: BRAINS
Communication Support Section
•
Mobile Services (GSM)
–
–
–
–
–
–
–
•
Single contract with a Swiss operator
Closed VPN comprising 5800 mobiles
GSM calls routed by the CERN PABX
68 radio sites (51 Swisscom & 17 CERN)
> 50 km of leaky feeder cable covering all
tunnels with mobile services
Dedicated APN to connect CERN Intranet
Main project: mobile operator swap
Radio services for fire brigade
–
–
–
–
–
3 TETRA Base Stations
Radio coverage of all tunnels and CERN sites
230 terminals
Indoor localization deployment
Main project: network consolidation
Leaky feeder cable
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Thanks
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Fixed and mobile services at CERN
•
•
Dedicated GSM VPN with specific
features:
‒ Short numbering plan
‒ No SMS premium
‒ Etc...
Strong interaction of fixed and
mobile services:
–
–
–
•
–
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
PRI
Allowed Call
Forbidden Call
DISA feature
network
LCS
CERN’s
CUG
CERN’s national mobile
operator network
Operator
3
Operator
2
Operator
1
GSM subscriptions:
–
–
•
GSM is a direct extension of fixed
network
GSM number = 1 virtual fixed
number
Makes debugging difficult!
CERN’s CUG
design
CERN’s fixed
3 subscriptions: Basic, Basic+, Full
Flat rate : calls between CERN numbers in Swiss, Data in Swiss, SMS,
MMS in Swiss.
Pre-paid data pack in Europe
Telecom Lab is like an “internall operator”
‒
‒
Provisioning of SIM cards, GSM numbers, etc.
GSM problem debugging
Non CERN
phone user
Communication Services Group
• CS group mandate:
– Provision of communication services for the lab
•
Networks and Telecoms
– Constituted of Four sections: CE, CD, CT and CS
• Communication Engineering
−
−
−
−
Network services (DNS, DHCP, etc.)
Design of the different network backbones
Development of network equipment configuration tools
Development of monitoring services
• Communication Deployment
−
−
Maintenance and deployment of edge-network services
Coordinates network cabling activities
• Communication Tools
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
−
−
Development of software specific to network services management
Maintenance and development of network database
Network services:
the Backbone Topology
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Red phones (telephony arch)
•
Red phone are basic devices designed to be resistant to radiations
Display name
Soft PABX A
Cat. 3
Display name
IP
network
Red phones
In tunnels
UTP
Soft PABX B
F.O.
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Level 3 alarms
system
Fire brigade
Tel A
Tel B
Network services:
the distribution network
•
CERN’s network protocols
−
−
−
−
•
Application layers: TCP/IP stack, VoIP, multicast, and any others
Internet layer: IPv4/v6
Link layer: OSPF, VRRP
Physical layer: Ethernet, WLAN, VDSL, Coax, terminal servers
Cabling infrastructure:
−
−
−
480 star points
UTP Cat5/5e/6 for local distribution
Fiber for star points interconnections and 10g Servers


Mono and multi mode
Large diversity of connectors: SFP+, LC, E2000, FC/PC, etc.
Core Network
Main starpoint
Fibre
UTP cable
for user
starpoint
Edge
router
Distribution
router
Network
Socket
Switch
Core
router
patch
cable
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Patch panel
UTP cabling
Infra in bld
Office