公开(公告)号：EP3952250A1

公开(公告)日：2022-02-09

申请号：EP21187332.8

申请日：2021-07-23

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L45/00 ,  H04L45/02 ,  H04L43/00

摘要： The embodiments herein relate to method and apparatuses in the form of switch device (1, 300) and a source host node (10, 500) respectively. A method perform by the switch device (1) includes receiving (210), from a source host node (10), a frame including a MAC address of the source host node (10) as a source MAC address; a MAC address of a destination host node (17) as a destination MAC address, and information indicating a type of the frame as a request frame; sending (220) the received frame towards the destination host node (17); generating (230) a first reply frame including the MAC address of the source host node (10), and information indicating a type of the frame as a reply frame, wherein the information, indicated in a source MAC address field of the first reply frame, includes a switch ID, a sequence number with a value equal to 0, a hop number with a value equal to 1, and an incoming port information that the switch device (1) uses to forward at least one frame towards the source host node (10); and sending (240) the generated first reply frame towards the source host node (10).

公开(公告)号：EP3869753A1

公开(公告)日：2021-08-25

申请号：EP21156727.6

申请日：2021-02-12

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L12/721 ,  H04L12/741 ,  H04L29/12

摘要： The present invention relates to a method for managing a MAC address table by a network node (210, 220A-220L, 230A-230L), the method comprising: defining (310) a first running time and a second running time for a timer (560); and the method further comprising: receiving (320) a frame; applying (340) the first running time in the timer (560) defined for a source of the received frame in response to a detection that an address of a destination missing in the MAC address table; and applying (350) a second running time in the timer (560) for MAC address of the source of the received frame and in the timer (560) for the MAC address of the destination in response to a detection that the address of the destination is present in the MAC address table. The invention also relates to a network node, a computer program product and a communication system.

公开(公告)号：EP3917098A1

公开(公告)日：2021-12-01

申请号：EP21168679.5

申请日：2021-04-15

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L12/751 ,  H04W8/08 ,  H04W40/24 ,  H04W40/34

摘要： The embodiments herein relate to methods and an apparatus for enabling routing of traffic to/from a roaming host node (121B) roaming from a subnet (121) of a home network (120) to a visited network (130), wherein the roaming host node (121B) is assigned an IP address in the home network (120), the method comprising: configuring (501), in a router (130B) of the visited network (130), a subnet (121) by assigning an IP address range to the subnet (121), wherein the assigned IP address range is the same IP address range of the subnet of the home network (120); configuring (502) a tunnel (23) between a router (120B) of the home network (120) and the router (130B); configuring (503), in the router (120B), a static route to route traffic from a host node, destined to the roaming host node (121B); and configuring (504) the router (130B) by applying a routing policy enabling the roaming host node (121B) to reply to received traffic from said host node received from a first interface and to route traffic from the roaming host node (121B) through a network interconnecting the router (130B) of the visited network (130) and the router (120B) of the home network (120).

公开(公告)号：EP4344151A1

公开(公告)日：2024-03-27

申请号：EP23169016.5

申请日：2023-04-20

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L45/00 ,  H04L45/02 ,  H04L45/745 ,  H04L45/24

摘要： The embodiments herein relate to a method and a system for routing data frames. The method comprising, a first router (R12 120) receiving from a first node (Node-A 121) a data frame. The first router (R12 120) replacing the source MAC address field in the data frame with a MAC address of an egress interface of the first router (R12 120). The first router (R12 120) determining, a MAC address of an ingress interface of a second router (R0 130), and replacing the destination MAC address field of the data frame with the MAC address of the ingress interface of the second router (R0 130). The first router (R12 120) sending the data frame to the second router (R0 130) which replaces the destination MAC address field with the MAC address of the ingress interface of a third router (R34 140). The second router (R0 130) setting the MAC address of the egress interface of the first router (R12 120) in routing table of the second router (R0 130) that matches with the source IP address field of the received data frame, and the second router (R0 130) sending the data frame to the third router (R34 140) through an egress interface of the second router (R0 130) that matches with the destination IP address field of the received data frame.

公开(公告)号：EP3599745A1

公开(公告)日：2020-01-29

申请号：EP19179290.2

申请日：2019-06-10

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L12/705 ,  H04L12/751 ,  H04L12/721

摘要： The embodiments herein relate to a method and a network switch device (800) for preventing the occurrence of loops in a network topology comprising a plurality of network switch devices, each switch device is assigned a unique SW-ID. The method comprises: exchanging each SW-ID between all switch devices; building, for each switch device, a routing table. The method further comprising: when receiving (401), at a first switch device, a data frame, from a second switch device (302), that includes an SS-ID, assigned to the second switch device (302); and the data frame is received at a port of the first switch device; if, according to the routing table of the first switch device, the assigned SW-ID for this port is different from the SS-ID included in the data frame, discarding (403) the data frame; otherwise, processing (404) forward the data frame.

公开(公告)号：EP3477897A1

公开(公告)日：2019-05-01

申请号：EP18200206.3

申请日：2018-10-12

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L12/46 ,  H04L12/715

摘要： The embodiments herein relate to methods and routers (500, 600). One method includes: (301) receiving a data packet from a source host router connected to a source host, said packet comprising a source IP address of the source host and a destination IP address of a destination host, the data packet being received on an interface of the source edge router identified by a virtual private network identity, VRF-ID; (302) extracting, from a configuration information on said interface, of the source edge router, a zone-identity, zone-ID, of a destination edge router to which a destination host router is associated, wherein the destination host router is connected to the destination host, (303) adding the zone-ID and the VRF-ID at Layer 2.5 of the data packet; and (304) sending the data packet towards the destination edge router having the assigned zone-ID

公开(公告)号：EP4462747A1

公开(公告)日：2024-11-13

申请号：EP24173815.2

申请日：2024-05-02

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L45/00 ,  H04L45/74 ,  H04L101/622

摘要： The present disclosure relates to methods and switch devices for switching data frames in a communications network. A method performed by a source switch device comprises: receiving a data frame from a source host node, wherein the data frame includes a source MAC address of the source host node, and a destination MAC address; modifying a part of the source MAC address field with information comprising: a switch ID of the source switch device, a port number indicating a port of the source switch device from which the data frame is received, and a reference number representing the part of the source MAC address; determining if there is a table in the source switch device; if there is a table, and if the table does not include the reference number and the part of the source MAC address; including the reference number and the part of the source MAC address in an entry of the table. If there is no table, generating a table and including in an entry, the reference number, and the part of the source MAC address; and forwarding or flooding, towards a destination host node, the modified data frame to at least one switch device of the plurality of switch devices.

公开(公告)号：EP4283946A1

公开(公告)日：2023-11-29

申请号：EP22174830.4

申请日：2022-05-23

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L45/02 ,  H04L45/021

摘要： A method, performed by a routing device (R0) comprising a number of communication interfaces (int-1, int-2, int-3) towards a number of subnets (BD-10, BD-20, BD-30), for generating a number of frames to determine a subnet (BD-10, BD-20, BD-30) a destination network node resides is provided, the method comprises: accepting (710) a frame; generating (720) a successor ARP requests for each communication interface (int-1, int-2, int-3) of the routing device (R0); and transmitting (730) generated successor ARP requests over each communication interface (int-1, int-2, int-3) to respective subnets (BD-10, BD-20, BD-30). Also a routing device (R0) and a computer program are provided to.

公开(公告)号：EP3890249A1

公开(公告)日：2021-10-06

申请号：EP21163059.5

申请日：2021-03-17

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L12/46 ,  H04L12/741

摘要： The embodiments herein relate to a method and a system for enabling routing of traffic to/from a roaming host node (121B) roaming from a subnet (121) of a home network (120) to a visited network (130), wherein the roaming host node (121) is assigned an IP address in the home network (120), the method comprising: configuring (301), in a router (130B) of the visited network (130) to which the roaming host node (121B) is connected, a subnet (121) by assigning an IP address range to the subnet (121), wherein the assigned IP address range is the same IP address range of the subnet (121) of the home network (120); creating or configuring (302) a tunnel between a router (120B) of the home network (120) and the router (130B) of the visited network (130); and creating or configuring (303), in the router (120B) of the home network (120), a static route to route traffic destined to the roaming host node (121 B) wherein the traffic is routed through the tunnel, and wherein the IP address of the roaming host node (121 B) is maintained unchanged in the subnet (121) of the visited network (130).

公开(公告)号：EP3855685A1

公开(公告)日：2021-07-28

申请号：EP21152838.5

申请日：2021-01-21

申请人： Telia Company AB

发明人： TAMIZKAR, Babak

IPC分类号： H04L12/705 ,  H04L12/721 ,  H04L12/741

摘要： The embodiments herein relate to a method and a system for switch data frames in a network comprising a plurality of switch devices (301-305). The method comprising: assigning (401) to each switch device, a SW-ID, exchanging (402) SW-IDs between switch devices; building (403) a routing table, for each switch device; receiving (404) a frame at a switch device. If the frame is a broadcast frame, generating (405) separate copies of the frame; modifying (406) a destination MAC address of each generated copy of the frame by including (407) in the destination MAC address an indicator value; and further including the SW-ID of a corresponding switch device and based on the routing table and the cost indicating in the routing table, transmitting or forwarding (408) each modified frame towards the switch device having the SW-ID indicated in the frame.