Scn 서비스 체인간의 브릿지 구현이 가능한가요?

younkun · 4월 18, 2022, 3:00오전

안녕하세요
EN-브릿지-SCN1-브릿지-SCN2
이렇게 서비스 체인 간 브릿지를 구현 할 수 있나요?

Nehem · 4월 18, 2022, 5:26오전

아직 Klaytn Docs에 반영되지는 않았지만, 리뷰 중인 PR 문서의 URL을 전달해 드립니다.

klaytn/klaytn-docs/blob/2906ef8331cefb05782fe983e320cd839860eb50/docs/node/service-chain/getting-started/nested-sc.md

This chapter explains how to build ServiceChain networks in a hierarchical structure by adding a new ServiceChain network to the ServiceChain network built in the previous chapter. The ServiceChain network to be added also consists of 4 SCNs in this example. The ServiceChain network constructed in the previous chapter is defined as L2, and the ServiceChain network to be newly constructed is defined as L3. We are going to connect a bridge between L2 and L3 to create a hierarchical structure. The overall structure of the ServiceChain network to be constructed in this chapter is shown in the figure below.

![](../images/sc-nestedsc-arch.png)


## Prerequisites <a id="prerequisites"></a>
 - Assume that you have progressed to the ServiceChain configuration and Baobab EN described in [Nested ServiceChain](./nested-sc.md). So we will briefly explain what was explained in the previous section.
 - Assumptions and Limitations
   - One EN can bridge one-to-one to one of the SCNs of the ServiceChain L2. Similarly, one SCN in L2 of the ServiceChain can bridge one-to-one to one of the SCNs in L3.
   - An SCN node can have a main bridge and a sub bridge at the same time. However, the port numbers of the main bridge and the sub bridge must be set differently. (eg main-bridge: 50505, sub-bridge:50506)
   - Not all SCNs in L2 need to be bridged to EN, and likewise SCNs in L3 need not all be bridged to L2. However, for high availability, it is recommended that there are two or more main-bridge and sub-bridge pairs between chains. In this chapter, only one pair will be connected between L2 and L3, and the high availability between L2 and L3 is same to the HA between Baobab and L2. 

## Step 1: Create and update Homi data for L3 <a id="step-1-create-and-update-homi"></a>
As when configuring ServiceChain L2, execute the `homi` command to create scripts and configuration files for building L3. You can run `homi` on any Linux/Mac PC. Baobab's `chainID` is `1001`, and L2's `chainID` was set to `1002` in the previous example, so for convenience, L3's `chainID` is set to `1003`. When operating a blockchain for an actual service, you must register a new `chainID` value at https://chainlist.defillama.com/ to avoid the `chainID` conflict with other ServiceChains and EVM chains.


```console
$ ./homi setup local --cn-num 4 --test-num 1 --servicechain --chainID 1003 --p2p-port 22323 -o homi-output
Created :  homi-output/keys/passwd1
Created :  homi-output/keys/passwd2

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글		댓글	조회수
Nested Service Chain 구성 연결 확인 문의 Kaia klaytn	1	206	8월 16, 2022
서비스 체인 고가용성 구성 문의드립니다 Kaia	2	252	4월 15, 2022
사이드 체인과 Baobab 연결할 때 문의 Kaia klaytn	3	300	1월 12, 2022
4-노드 서비스체인, Nested Service Chain 설정 관련 문의 Kaia	1	237	8월 16, 2022
Service chain 구성 중 bridge contract 배포 실패 문제 Kaia smart-contract , servicechain	5	348	1월 21, 2022

Scn 서비스 체인간의 브릿지 구현이 가능한가요?

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