CN115086106A - HASH scheme with multicast output port as tunnel known by VXLAN - Google Patents
HASH scheme with multicast output port as tunnel known by VXLAN Download PDFInfo
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- CN115086106A CN115086106A CN202210709477.1A CN202210709477A CN115086106A CN 115086106 A CN115086106 A CN 115086106A CN 202210709477 A CN202210709477 A CN 202210709477A CN 115086106 A CN115086106 A CN 115086106A
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- 235000008694 Humulus lupulus Nutrition 0.000 claims abstract description 39
- 230000010076 replication Effects 0.000 claims abstract description 38
- 230000006855 networking Effects 0.000 claims abstract description 13
- 230000002776 aggregation Effects 0.000 claims description 21
- 238000004220 aggregation Methods 0.000 claims description 21
- 102100034228 Grainyhead-like protein 1 homolog Human genes 0.000 claims description 5
- 101001069933 Homo sapiens Grainyhead-like protein 1 homolog Proteins 0.000 claims description 5
- 230000003362 replicative effect Effects 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims 3
- ISRUGXGCCGIOQO-UHFFFAOYSA-N Rhoden Chemical compound CNC(=O)OC1=CC=CC=C1OC(C)C ISRUGXGCCGIOQO-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 102100036822 Ankyrin repeat and KH domain-containing protein 1 Human genes 0.000 description 1
- 102100034609 Ankyrin repeat domain-containing protein 17 Human genes 0.000 description 1
- 101000928335 Homo sapiens Ankyrin repeat and KH domain-containing protein 1 Proteins 0.000 description 1
- 101000924481 Homo sapiens Ankyrin repeat domain-containing protein 17 Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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Abstract
The invention discloses a HASH scheme with a known multicast output port of VXLAN as a tunnel, which comprises the following steps: creating a multicast forwarding table item on a multicast replication device Leaf1 of the VXLAN network; creating a Tunnel12, wherein the Tunnel12 connects an output port of the multicast forwarding table item with a multicast replication device Leaf2 of the VXLAN networking; creating a Tunnel13, wherein the Tunnel13 connects an output port of the multicast forwarding table item with a multicast replication device Leaf3 of the VXLAN networking; creating several next hops at all exits of Tunnel12 or Tunnel 13; the multicast message of the multicast replication device Leaf1 acquires the multicast forwarding table entry, HASH to several next hops of the Tunnel12 or Tunnel13, and forwards the multicast message of any next hop. The invention realizes that the message HASH reaches all next hops of the tunnel when the output port of the VXLAN multicast is the tunnel, thereby improving the reliability of message forwarding.
Description
Technical Field
The invention relates to the technical field of data transmission, in particular to a HASH scheme with a tunnel as a known multicast output port of VXLAN.
Background
The multicast sends information to a certain target group in a best effort mode, the target group is called a multicast group, therefore, when an active host sends information requirements to a multipoint target host, the active host only sends a copy of data, the destination address of the data is the multicast group address, all members belonging to the group can receive the copy of the data sent by the active host, and in the multicast mode, only the members needing the real information can receive the information, and other hosts cannot receive the information.
As shown in fig. 1, in the Vxlan networking in the prior art, each Leaf is communicated through Spine three layers, and a tunnel is established between each Leaf. The server which needs to receive the information sends the multicast joining protocol message, so that the server of the data source sends a copy of data to the received server. The Server1, as a data source, copies a message to each of the tunnels to Leaf2 and Leaf3 over Leaf1, so that the destination servers 2 and 3 of the multicast group receive a message, and there is a multicast message in which the egress port of the VXLAN multicast is a tunnel, and the HASH cannot reach all next hops of the tunnel.
Disclosure of Invention
According to an embodiment of the present invention, a HASH scheme is provided in which a multicast egress port of VXLAN is a tunnel, and the HASH scheme includes the following steps:
creating a multicast forwarding table item on a multicast replication device Leaf1 of a VXLAN networking;
creating a Tunnel12, wherein the Tunnel12 connects an output port of the multicast forwarding table item with a multicast replication device Leaf2 of the VXLAN networking;
creating a Tunnel13, wherein the Tunnel13 connects an output port of the multicast forwarding table item with a multicast replication device Leaf3 of the VXLAN networking;
creating several next hops at all exits of Tunnel12 or Tunnel 13;
the multicast message of the multicast replication device Leaf1 acquires the multicast forwarding table entry, HASH to several next hops of the Tunnel12 or Tunnel13, and forwards the multicast message of any next hop.
Further, several next hops of Tunnel12 include: next hop NH21, next hop NH22, next hop NH23, next hop NH 24.
Further, several next hops of Tunnel13 include: next hop NH31, next hop NH32, next hop NH33, next hop NH 34.
Further, the multicast packet of the multicast replication device Leaf1 acquires the multicast forwarding table HASH to a plurality of next hops of the Tunnel12 or the Tunnel13, and forwards the multicast packet of any next hop, including the following substeps:
adding a plurality of next hops of the Tunnel12 or the Tunnel13 into the multicast forwarding table entry;
creating a Trunk3, taking a plurality of connectors of a multicast replication device Leaf1 as member ports of the Trunk3, and obtaining a member port P1, a member port P2, a member port P3 and a member port P4;
setting a broadcast MASK table Trunk _ MASK3 of aggregation Trunk3, wherein the broadcast MASK table Trunk _ MASK3 is connected with a plurality of next hops of Tunnel12 or Tunnel13 through a member port P1, a member port P2, a member port P3 and a member port P4;
acquiring a multicast forwarding table HASH to a plurality of next hops of a Tunnel12 or a Tunnel13 by a multicast message of multicast replication equipment Leaf1, and further replicating the multicast forwarding table HASH into a member port P1, a member port P2, a member port P3 and a member port P4;
the broadcast MASK table Trunk _ MASK3 forwards the message in any one of the member port P1, the member port P2, the member port P3 and the member port P4.
Further, the broadcast MASK table Trunk _ MASK3 randomly forwards the packets in any one of the member port P1, the member port P2, the member port P3 and the member port P4 according to the packet characteristics of the multicast packet.
Further, when setting the broadcast MASK table Trunk _ MASK3 of the aggregation Trunk3, the ingress forwarding logic of the aggregation Trunk3 and the egress unicast logic of the aggregation Trunk3 are not set.
Further, before the multicast packet of the multicast replication device Leaf1 acquires the multicast forwarding table entry HASH to several next hops of the Tunnel12 or the Tunnel13 and forwards the multicast packet of any next hop, the broadcast mask table of the multicast replication device Leaf1 is deleted.
According to the HASH scheme of the VXLAN known multicast output port as the tunnel, all the next hops from the message HASH to the tunnel are realized when the output port of the VXLAN multicast is the tunnel, and the reliability of message forwarding is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology.
Drawings
Fig. 1 is a connection relation diagram of Vxlan networking in the prior art;
fig. 2 is a schematic diagram of VXLAN multicast forwarding of a HASH scheme in which a known multicast egress port of VXLAN is a tunnel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of VXLAN multicast hardware forwarding of a HASH scheme in which a known multicast egress port of VXLAN is a tunnel according to an embodiment of the present invention;
fig. 4 is a flowchart of the steps of a HASH scheme where VXLAN knows that a multicast egress port is a tunnel according to an embodiment of the present invention;
fig. 5 is a flowchart of the sub-steps of step S5 in fig. 4.
Detailed Description
The present invention will be further explained by describing preferred embodiments of the present invention in detail with reference to the accompanying drawings.
First, a HASH scheme with a tunnel as a known multicast output port of VXLAN according to an embodiment of the present invention will be described with reference to fig. 2 to 5, which is used for transmitting data and has a wide application range.
As shown in fig. 2 to 4, the HASH scheme for VXLAN with a multicast egress port as a tunnel according to the embodiment of the present invention includes the following steps:
in S1, as shown in fig. 2 to 4, a multicast forwarding entry (IPMC) is created on the multicast replication device Leaf1 of the VXLAN networking.
In S2, as shown in fig. 2 to 4, a Tunnel12 is created, and a Tunnel12 connects an egress port of a multicast forwarding entry (IPMC) and a multicast replication device Leaf2 of the VXLAN networking.
In S3, as shown in fig. 2 to 4, a Tunnel13 is created, and a Tunnel13 connects an egress port of a multicast forwarding entry (IPMC) and a multicast replication device Leaf3 of the VXLAN networking.
In S4, as shown in FIGS. 2-4, several next hops are created at all exits of Tunnel12 or Tunnel 13.
In S5, as shown in fig. 2 to 4, the multicast packet of the multicast replication device Leaf1 acquires a multicast forwarding entry (IPMC), has to a plurality of next hops of the Tunnel12 or the Tunnel13, and forwards the multicast packet of any next hop.
Further, as shown in fig. 2-3, the next hops of Tunnel12 include: next hop NH21, next hop NH22, next hop NH23, next hop NH 24.
Further, as shown in fig. 2-3, the next hops of Tunnel13 include: next hop NH31, next hop NH32, next hop NH33, next hop NH 34.
Further, the multicast packet of the multicast replication device Leaf1 acquires a multicast forwarding table (IPMC) HASH to a plurality of next hops of the Tunnel12 or the Tunnel13, and forwards the multicast packet of any next hop, including the following sub-steps:
in S51, as shown in fig. 2 to 5, several next hops of the Tunnel12 or the Tunnel13 are added to the multicast forwarding table entry (IPMC).
In S52, as shown in fig. 2 to 5, a Trunk set 3 is created, and a plurality of connection ports of the multicast replication device Leaf1 are used as member ports of the Trunk set 3, and a member port P1, a member port P2, a member port P3, and a member port P4 are obtained.
At S53, as shown in fig. 2 to 5, broadcast MASK table Trunk _ MASK3 of aggregate Trunk3 is set, and broadcast MASK table Trunk _ MASK3 is connected to several next hops of Tunnel12 or Tunnel13 through member port P1, member port P2, member port P3 and member port P4.
In S54, as shown in fig. 2 to 5, the multicast packet of the multicast replication device Leaf1 acquires the multicast forwarding table HASH to a plurality of next hops of the Tunnel12 or the Tunnel13, and further replicates into the member port P1, the member port P2, the member port P3, and the member port P4.
In S55, as shown in fig. 2 to 5, the broadcast MASK table Trunk _ MASK3 forwards the message in any one of the member port P1, the member port P2, the member port P3 and the member port P4.
Further, as shown in fig. 3, the broadcast MASK table Trunk _ MASK3 randomly forwards the packets in any one of the member port P1, the member port P2, the member port P3 and the member port P4 according to the packet characteristics of the multicast packet.
Further, as shown in fig. 3, when the broadcast MASK table Trunk _ MASK3 of the aggregation Trunk3 is set, the ingress forwarding logic of the aggregation Trunk3 and the egress unicast logic of the aggregation Trunk3 are not set.
Further, as shown in fig. 3, before the multicast packet of the multicast replication device Leaf1 acquires the multicast forwarding table entry (IPMC) HASH to several next hops of the Tunnel12 or the Tunnel13 and forwards the multicast packet of any next hop, the broadcast mask table of the multicast replication device Leaf1 is deleted.
Under the condition that the multicast replication device Leaf1 and the server Spine1 or the server Spine2 are connected through a routing port, unicast forwarding of the Tunnel12 or the Tunnel13 can be carried out to the next hop through hardware logic HASH of the ECMP, and multicast forwarding does not support HASH between different routing ports, so that only one outlet can be added, and the traffic is ensured to copy only one part of the multicast replication device Leaf 2; the Tunnel13 is also a similar processing mode to realize forwarding of a traffic to the multicast replication device Leaf 3; creating an aggregation Trunk3, setting P1, P2, P3 and P4 as member ports of aggregation Trunk3, and setting a broadcast MASK table Trunk _ MASK3 of aggregation Trunk 3; but without the aggregated ingress forwarding logic and egress unicast logic, Tunnel12 creates a next hop with all of the egress of Tunnel13, Tunnel12 creates NH21, NH22, NH23, and NH 24; tunnel13 creates NH31, NH32, NH33, and NH 34; and all add to multicast forwarding table entry (IPMC). Looking up known multicast table items by different multicast messages to obtain a multicast replication table (IPMC), finding an exit with an exit of Tunnel12 or Tunnel13 in the multicast replication table (IPMC) and replicating 4 copies to a member port P1, a member port P2, a member port P3 and a member port P4, and then masking off the messages of three ports according to a broadcast MASK table Trunk _ MASK3, so that only one message is forwarded. And randomly passing one copy of the packets according to different packet characteristics, thereby realizing that different packets are forwarded by known multicast, the exit of which is Tunnel12 or Tunnel13, and the HASH is sent to different next hops of Tunnel12 or Tunnel 13.
Under the condition that the multicast replication device Leaf1 and the server Spine1 or the server Spine2 are connected through the route aggregation port, the unicast forwarding of the Tunnel12 or the Tunnel13 can be sent to the next hop through the hardware logic HASH of the ECMP, and the multicast forwarding does not support the HASH between different route aggregation ports, so that only one aggregation port can be added, and the traffic is ensured to replicate only one multicast replication device Leaf 2. If the route aggregation port has a plurality of member ports, all the member ports are added into a multicast forwarding table, each member port copies a message, and a broadcast MASK table Trunk _ MASK3 in the outgoing direction only releases the message of one member port to be forwarded out according to the HASH calculation result of the message, and the messages of other member ports are discarded; therefore, the broadcast MASK table Trunk _ MASK1 of the aggregation Trunk1 is deleted first; the aggregate Trunk2 broadcast MASK table Trunk _ MASK2 is also deleted. Then, an aggregation Trunk3 is created, P1, P2, P3 and P4 are taken as member ports of aggregation, and a broadcast MASK table Trunk _ MASK3 of the aggregation Trunk3 is set; but does not provide aggregated ingress forwarding logic and egress unicast logic. All exits of Tunnel12 or Tunnel13 are created as next hops, Tunnel12 creates NH21, NH22, NH23, and NH 24; the Tunnel13 creates NH31, NH32, NH33, and NH34, and adds all to a multicast forwarding table entry (IPMC) IPMC. Different multicast messages look up known multicast table items to obtain a multicast forwarding table, find an outlet of a Tunnel12 or a Tunnel13 in the multicast forwarding table, copy 4 parts of the outlet to a member port P1, a member port P2, a member port P3 and a member port P4, MASK the messages of three ports according to the table items of a broadcast MASK table Trunk _ MASK3, and only forward one message. And randomly passing through one copy of the packets according to the packet characteristics of different packets, so that different packets are forwarded to different next hops of the Tunnel by the known multicast whose exit is Tunnel12 or Tunnel 13.
In the above, with reference to fig. 2 to 5, the HASH scheme that the multicast egress port of the VXLAN is a tunnel according to the embodiment of the present invention is described, so that when the egress port of the VXLAN multicast is a tunnel, all next hops from the packet HASH to the tunnel are realized, and the reliability of packet forwarding is improved.
It should be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (7)
1. A HASH scheme for VXLAN with a known multicast egress port as a tunnel, comprising the steps of:
creating a multicast forwarding table item on a multicast replication device Leaf1 of a VXLAN networking;
creating a Tunnel12, wherein the Tunnel12 connects an egress port of the multicast forwarding table entry with a multicast replication device Leaf2 of the VXLAN networking;
creating a Tunnel13, wherein the Tunnel13 connects an egress port of the multicast forwarding table entry with a multicast replication device Leaf3 of the VXLAN networking;
creating several next hops at all exits of the Tunnel12 or the Tunnel 13;
the multicast message of the multicast replication device Leaf1 acquires the multicast forwarding table entry, HASH to the plurality of next hops of the Tunnel12 or the Tunnel13, and forwards the multicast message of any one of the next hops.
2. The HASH scheme for which VXLAN knows that a multicast egress port is a Tunnel according to claim 1, wherein the number of next hops for the Tunnel12 comprises: next hop NH21, next hop NH22, next hop NH23, next hop NH 24.
3. The HASH scheme for which VXLAN knows that a multicast egress port is a Tunnel as in claim 1, wherein the next hops of the Tunnel13 include: next hop NH31, next hop NH32, next hop NH33, next hop NH 34.
4. The HASH scheme for multicast egress port tunneling known by VXLAN as claimed in claim 1, wherein the multicast packet of the multicast replication device Leaf1 obtains the multicast forwarding entry HASH to the plurality of next hops of the Tunnel12 or the Tunnel13, and forwards the multicast packet of any of the next hops, comprising the following sub-steps:
adding a plurality of next hops of the Tunnel12 or the Tunnel13 into the multicast forwarding table entry;
creating a Trunk3, and taking a plurality of connection ports of the multicast replication equipment Leaf1 as member ports of the Trunk3 to obtain a member port P1, a member port P2, a member port P3 and a member port P4;
setting a broadcast MASK table Trunk _ MASK3 of said aggregate Trunk3, said broadcast MASK table Trunk _ MASK3 being connected to said Tunnel12 or to several next hops of said Tunnel13 via said member port P1, said member port P2, said member port P3, said member port P4;
acquiring, by the multicast packet of the multicast replication device Leaf1, the multicast forwarding table HASH to the plurality of next hops of the Tunnel12 or the Tunnel13, and further replicating the multicast forwarding table HASH to enter the member port P1, the member port P2, the member port P3, and the member port P4;
and the broadcast MASK table Trunk _ MASK3 forwards the messages in any one of the member port P1, the member port P2, the member port P3 and the member port P4.
5. The HASH scheme for multicast egress port tunneling known by VXLAN of claim 4, wherein the broadcast MASK table Trunk _ MASK3 randomly forwards packets in any one of the member port P1, the member port P2, the member port P3 and the member port P4 according to packet characteristics of the multicast packet.
6. The HASH scheme of claim 1, wherein the broadcast MASK table Trunk _ MASK3 of the aggregation Trunk3 is set, and wherein the ingress forwarding logic of the aggregation Trunk3 and the egress unicast logic of the aggregation Trunk3 are not set.
7. The HASH scheme for multicast egress port tunneling known by VXLAN of claim 1, wherein before the multicast packet of the multicast replication device Leaf1 acquires the multicast forwarding entry HASH to the several next hops of the Tunnel12 or the Tunnel13, and forwards the multicast packet of any of the next hops, the broadcast mask table of the multicast replication device Leaf1 is deleted.
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