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Trinet

the Otaniemi campus student network founded in 1986

Trinet Network Technology

General

Trinet network base solely on Ethernet technology. The core network and Internet connections were upgraded to 10 Gbps in 2009-2010, and most recently to 100 Gbps in 2018. The remaining part of the network use 10 Gbps (unprotected core access) or 10+10 Gbps (protected core access) links.

The network topology is visualized in the Trinet weathermap.

Routers

Trinet has two Juniper MX204 routers which provide IPv4 and IPv6 routing for the whole network. Both routers have their own 100 Gbps Funet connection, and routers themselves have been linked with 100 Gbps. The total forwarding capacity for each router is around 400 Gbps.

Current sites and edge switches

Please refer to the following table if you are interested in the current situation in the apartment buildings or in the AYY offices.

LocationSwitchesUser AccessTowards BackboneIP MTUDHCP FilteringRA/DHCPv6 FilteringIPv4 MulticastIPv6 Multicast1 Gbps Schedule
AYYJämeräntaival 12 * Cisco Catalyst 4506-E1 Gbps20+20 Gbps9000XXXX
AYYJämeräntaival 3 A1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 3 B1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 3 C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 5 A1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 5 B1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 5 C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 62 * Cisco Catalyst 4506-E1 Gbps20+20 Gbps9000XXXX
AYYJämeräntaival 7 A1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 7 B1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYJämeräntaival 7 C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 91 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 10 A-B1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 10 C-D1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 10 E-F1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 10 G1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 10 H1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 11 A-D2 * Cisco Catalyst 4506-E1 Gbps20+20 Gbps9000XXXX
HOASJämeräntaival 11 E-F1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASJämeräntaival 11 G-I2 * Cisco Catalyst 4506-E1 Gbps20+20 Gbps9000XXXX
HOASJämeräntaival 11 J-M2 * Cisco Catalyst 4506-E1 Gbps20+20 Gbps9000XXXX
AYYMiestentie 2 B2 * Cisco Catalyst 4506-E1 Gbps20+20 Gbps9000XXXX
AYYOtakaari 18 A1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYOtakaari 18 B-C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYOtakaari 201 * HP ProCurve 5406R1 Gbps10+10 Gbps9000XXXX
AYYOtaranta 8 A1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYOtaranta 8 B1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYOtaranta 8 C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYOtaranta 8 D1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYOtaranta 8 E1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYServinkuja 11 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
OASServinkuja 2 A-C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
OASServinkuja 2 D-F1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASServinkuja 5 A1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASServinkuja 5 B1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASServinkuja 61 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
OASServin Maijan tie 11 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
HOASServin Maijan tie 31 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYServin Maijan tie 6 A-C1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYServin Maijan tie 6 D-G1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYServin Maijan tie 101 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYServin Maijan tie 12 A-F1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYServin Maijan tie 12 G-K1 * Cisco Catalyst 4506-E1 Gbps10+10 Gbps9000XXXX
AYYAtlantinkatu 72 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYHaarniskatie 82 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYKaj Franckin katu 41 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYKääpiöidenpolku 42 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYMäyrätie 11 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYPohjavedenkatu 42 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYRummunlyöjänkatu 11 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYRummunlyöjänkatu 31 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYTuhkimontie 22 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYTurkismiehentie 81 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYYVaasankatu 101 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
Rantasauna1 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
Servin Mökki1 * HP ProCurve 2920-48G1 Gbps10 Gbps9000XXXX
TF Otakaari 221 * Juniper EX42001 Gbps10+10 Gbps9000XXX
TF Otakaari 221 * HP ProCurve 2626100 Mbps1 Gbps1500X X  
TF Otakaari 223 * HP ProCurve 2650100 Mbps1 Gbps1500X X  
AYY Otakaari 111 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXX
AYY Otakaari 112 * HP ProCurve 2910al1 Gbps10 Gbps9000XXXX

Future sites

The following sites are planned to be connected to the Trinet network in the near future.

LocationSwitchesUser AccessTowards BackboneIP MTUDHCP FilteringRA/DHCPv6 FilteringIPv4 MulticastIPv6 MulticastSchedule
AYYArkadiankatu 281 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXXQ4 / 2019
AYYRuusulankatu 51 * Cisco Catalyst 4506-E1 Gbps10 Gbps9000XXXXTBD

Cabling and wall sockets at the current sites

The following table contains cabling and wall socket info per building. The amount of possible wall sockets and connected Ethernet ports varies case-by-case, depending on when the building has been built or last renovated. Also, there might be some exceptions like extra wall sockets, this only describes the general basic situation.

Every wall socket should have at least one connected port. Recently built or renovated buildings usually have wall sockets in every room but some older buildings may only have a single wall socket to be shared for the whole apartment. If your apartment contains only a single connected wall socket, and there are multiple tenants, the access need to be shared.

In some apartments there might be a small apartment's own distribution panel where uplink connections can be patched to desired rooms and wall sockets. A small switch can be used if there are no enough uplink ports for each wall socket. More info can be found from our instructions.

The table also shows single-mode fiber connectivity readiness even though fibers are not currently used.

LocationSocket TypeConnected PortsFibersNotes
AYYJämeräntaival 1DualOdd4 * SM
AYYJämeräntaival 3DualAll4 * SM
AYYJämeräntaival 5DualAll4 * SM
AYYJämeräntaival 6DualAll4 * SM
AYYJämeräntaival 7DualAll4 * SM
HOASJämeräntaival 9DualAllPorts labeled as "atk" and "puh"
HOASJämeräntaival 10DualAllRenovation ongoing. Distribution panel in some already renovated family apartments.
HOASJämeräntaival 11DualAllDistribution panel in some family apartments at JT11 A-D
AYYMiestentie 2 BDualOdd4 * SM
AYYOtakaari 18 ADualOdd4 * SM
AYYOtakaari 18 B-CDualOdd
AYYOtakaari 20Single
AYYOtaranta 8DualOddDistribution panel in some family apartments at OR8 A and C
AYYServinkuja 1Single
OASServinkuja 2Single
HOASServinkuja 5DualOdd2 * SM
HOASServinkuja 6DualAll
OASServin Maijan tie 1Single
HOASServin Maijan tie 3Single
AYYServin Maijan tie 6SingleOnly one connection per apartment
AYYServin Maijan tie 10SingleOnly one connection per apartment
AYYServin Maijan tie 12SingleOnly one connection per apartment
AYYArkadiankatu 28DualAll
AYYAtlantinkatu 7DualAll4 * SM
AYYHaarniskatie 8Single
AYYKaj Franckin katu 4Single
AYYKääpiöidenpolku 4Single
AYYMäyrätie 1Single
AYYPohjavedenkatu 4Single
AYYRummunlyöjänkatu 1Single
AYYRummunlyöjänkatu 3DualOdd
AYYTuhkimontie 2Single
AYYTurkismiehentie 8Single
AYYVaasankatu 10DualAll4 * SM

Unicast and Multicast Routing

Border Gateway Protocol (BGP) is in use for both IPv4 unicast/multicast and IPv6 unicast/multicast routing. To decrease Internet connectivity convergation delay in case of a link failure, Bidirectional Forwarding Detection (BFD) is utilized with IPv4 BGP to detect a link failure on a sub-second time scale. Internal Gateway Protocol (IGP), namely, Intermediate System to Intermediate System (IS-IS), is in place to establish connectivity between the Trinet routers by advertising the loopbacks and the link networks. The second important task for the IGP routes is to provide BGP next-hop reachability. Otherwise BGP carries all external and internal route information.

Both Funet uplinks are normally in use as the same BGP metric is used in the both links. The model is called "hot-potato" aka closest-exit routing.

Multicast routing uses Protocol Independent Multicast - Sparse-Mode (PIM-SM) and PIM - Source-Specific Multicast (PIM-SSM) in addition to Multicast Source Discovery Protocol (MSDP), which enables inter-domain IPv4 multicast.

Customer Access

Trinet utilizes Virtual Router Redundancy Protocol (VRRP) on the direction of the customer networks. Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) is used with IPv4 and IPv6 multicast, respectively. Jumbo frames are enabled and the network supports IP Maximum Transfer Unit (MTU) up to 9000 bytes.

User IP address configurations are delivered by Dynamic Host Configuration Protocol (DHCP) in IPv4, and by stateless address autoconfiguration (SLAAC) and DHCPv6 in IPv6.

Trinet security and filtering policies are described in the Usage Policy.

© 2019 Veijo Kyläverkko <verkko@ayy.fi>
Last updated: 2019-12-01