diff --git a/contracts/zksync/l1-contracts/zksync/interfaces/IAdmin.sol b/contracts/zksync/l1-contracts/zksync/interfaces/IAdmin.sol
index 6e15386..570b09c 100644
--- a/contracts/zksync/l1-contracts/zksync/interfaces/IAdmin.sol
+++ b/contracts/zksync/l1-contracts/zksync/interfaces/IAdmin.sol
@@ -3,11 +3,16 @@
 pragma solidity ^0.8.0;
 
 import {FeeParams} from "../Storage.sol";
+import {IL2Gateway} from "../../../../interfaces/IL2Gateway.sol";
 
 /// @title The interface of the Admin Contract that controls access rights for contract management.
 /// @author Matter Labs
 /// @custom:security-contact security@matterlabs.dev
 interface IAdmin {
+    /// @notice Init gateway
+    /// @param _gateway The gateway on local chain
+    function setGateway(IL2Gateway _gateway) external;
+
     /// @notice Change validator status (active or not active)
     /// @param _validator Validator address
     /// @param _active Active flag
diff --git a/contracts/zksync/l1-contracts/zksync/interfaces/IGetters.sol b/contracts/zksync/l1-contracts/zksync/interfaces/IGetters.sol
new file mode 100644
index 0000000..b676712
--- /dev/null
+++ b/contracts/zksync/l1-contracts/zksync/interfaces/IGetters.sol
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+import {IL2Gateway} from "../../../../interfaces/IL2Gateway.sol";
+
+/// @title The interface of the Getters Contract that implements functions for getting contract state from outside the blockchain.
+/// @author Matter Labs
+/// @custom:security-contact security@matterlabs.dev
+interface IGetters {
+    /*//////////////////////////////////////////////////////////////
+                            CUSTOM GETTERS
+    //////////////////////////////////////////////////////////////*/
+
+    /// @return The gateway on local chain
+    function getGateway() external view returns (IL2Gateway);
+
+    /// @return The total number of batches that were committed & verified & executed
+    function getTotalBatchesExecuted() external view returns (uint256);
+
+    /// @return The total number of priority operations that were added to the priority queue, including all processed ones
+    function getTotalPriorityTxs() external view returns (uint256);
+
+    /// @return Whether the address has a validator access
+    function isValidator(address _address) external view returns (bool);
+
+    /// @return merkleRoot Merkle root of the tree with L2 logs for the selected batch
+    function l2LogsRootHash(uint256 _batchNumber) external view returns (bytes32 merkleRoot);
+}
diff --git a/examples/arbitrum/hardhat.config.js b/examples/arbitrum/hardhat.config.js
index 9c0938d..3576123 100644
--- a/examples/arbitrum/hardhat.config.js
+++ b/examples/arbitrum/hardhat.config.js
@@ -1,6 +1,7 @@
 require('@nomiclabs/hardhat-ethers');
 require('./scripts/syncL2Requests');
 require('./scripts/syncBatchRoot');
+require('./scripts/setSecondaryGateway');
 
 const BaseConfig = require('../../hardhat.base.config');
 
diff --git a/examples/arbitrum/scripts/setSecondaryGateway.js b/examples/arbitrum/scripts/setSecondaryGateway.js
new file mode 100644
index 0000000..0f79313
--- /dev/null
+++ b/examples/arbitrum/scripts/setSecondaryGateway.js
@@ -0,0 +1,156 @@
+const { providers, Wallet, utils } = require('ethers');
+const { readDeployContract, getLogName, readDeployLogField } = require('../../../script/utils');
+const logName = require('../../../script/deploy_log_name');
+const { L1TransactionReceipt, L1ToL2MessageStatus } = require('@arbitrum/sdk');
+const { L1ToL2MessageGasEstimator } = require('@arbitrum/sdk/dist/lib/message/L1ToL2MessageGasEstimator');
+const { getBaseFee } = require('@arbitrum/sdk/dist/lib/utils/lib');
+const { task, types } = require('hardhat/config');
+
+require('dotenv').config();
+
+task('setSecondaryGateway', 'Send secondary gateway')
+  .addOptionalParam(
+    'arbitrator',
+    'The arbitrator address (default get from arbitrator deploy log)',
+    undefined,
+    types.string,
+  )
+  .addParam('targetNetwork', 'L2 network name', undefined, types.string, false)
+  .addOptionalParam('active', 'Enable the gateway?', true, types.boolean)
+  .setAction(async (taskArgs, hre) => {
+    const arbitrumName = process.env.ARBITRUM;
+    const ethereumName = process.env.ETHEREUM;
+    console.log(`Arbitrum net name: ${arbitrumName}`);
+    console.log(`Ethereum net name: ${ethereumName}`);
+
+    let arbitratorAddr = taskArgs.arbitrator;
+    let targetNetwork = taskArgs.targetNetwork;
+    const active = taskArgs.active;
+    if (arbitratorAddr === undefined) {
+      arbitratorAddr = readDeployLogField(
+        logName.DEPLOY_ARBITRATOR_LOG_PREFIX,
+        logName.DEPLOY_LOG_ARBITRATOR,
+        ethereumName,
+      );
+    }
+    if (targetNetwork === arbitrumName) {
+      console.log('Can not set for primary chain');
+      return;
+    }
+    let l1GatewayAddr;
+    if (targetNetwork === ethereumName) {
+      l1GatewayAddr = readDeployContract(logName.DEPLOY_ETH_GATEWAY_LOG_PREFIX, logName.DEPLOY_GATEWAY, ethereumName);
+    } else {
+      const l1GatewayLogName = getLogName(logName.DEPLOY_L1_GATEWAY_LOG_PREFIX, targetNetwork);
+      l1GatewayAddr = readDeployContract(l1GatewayLogName, logName.DEPLOY_GATEWAY, ethereumName);
+    }
+    if (l1GatewayAddr === undefined) {
+      console.log('L1 gateway address not found');
+      return;
+    }
+    console.log(`The arbitrator address: ${arbitratorAddr}`);
+    console.log(`The secondary chain l1 gateway address: ${l1GatewayAddr}`);
+    console.log(`Enable the gateway? ${active}`);
+
+    const arbitrumL1GatewayLogName = getLogName(logName.DEPLOY_L1_GATEWAY_LOG_PREFIX, arbitrumName);
+    const arbitrumL1GatewayAddr = readDeployContract(arbitrumL1GatewayLogName, logName.DEPLOY_GATEWAY, ethereumName);
+    if (arbitrumL1GatewayAddr === undefined) {
+      console.log('Arbitrum l1 gateway address not exist');
+      return;
+    }
+    console.log(`The arbitrum l1 gateway address: ${arbitrumL1GatewayAddr}`);
+
+    const arbitrumL2GatewayAddr = readDeployContract(
+      logName.DEPLOY_L2_GATEWAY_LOG_PREFIX,
+      logName.DEPLOY_GATEWAY,
+      arbitrumName,
+    );
+    if (arbitrumL2GatewayAddr === undefined) {
+      console.log('Arbitrum l2 gateway address not exist');
+      return;
+    }
+    console.log(`The arbitrum l2 gateway address: ${arbitrumL2GatewayAddr}`);
+
+    const walletPrivateKey = process.env.DEVNET_PRIVKEY;
+    const l1Provider = new providers.JsonRpcProvider(process.env.L1RPC);
+    const l2Provider = new providers.JsonRpcProvider(process.env.L2RPC);
+    const l1Wallet = new Wallet(walletPrivateKey, l1Provider);
+    const l2Wallet = new Wallet(walletPrivateKey, l2Provider);
+
+    /**
+     * Now we can query the required gas params using the estimateAll method in Arbitrum SDK
+     */
+    const l1ToL2MessageGasEstimate = new L1ToL2MessageGasEstimator(l2Provider);
+
+    const l1WalletAddress = await l1Wallet.getAddress();
+    const l1WalletBalance = utils.formatEther(await l1Wallet.getBalance());
+    console.log(`${l1WalletAddress} balance on l1: ${l1WalletBalance} ether`);
+
+    const arbitrator = await hre.ethers.getContractAt('Arbitrator', arbitratorAddr, l1Wallet);
+    const zkLinkFactory = await hre.ethers.getContractAt('IZkSync', hre.ethers.constants.AddressZero);
+    const zkLinkCallValue = 0;
+    const zkLinkCallData = zkLinkFactory.interface.encodeFunctionData('setSecondaryChainGateway', [
+      l1GatewayAddr,
+      active,
+    ]);
+    const l2GatewayFactory = await hre.ethers.getContractFactory('ArbitrumL2Gateway');
+    const l2GatewayCallData = l2GatewayFactory.interface.encodeFunctionData('claimMessageCallback', [
+      zkLinkCallValue,
+      zkLinkCallData,
+    ]);
+
+    /**
+     * The estimateAll method gives us the following values for sending an L1->L2 message
+     * (1) maxSubmissionCost: The maximum cost to be paid for submitting the transaction
+     * (2) gasLimit: The L2 gas limit
+     * (3) deposit: The total amount to deposit on L1 to cover L2 gas and L2 call value
+     */
+    const l1BaseFee = await getBaseFee(l1Provider);
+    console.log(`Current base fee on L1 is: ${l1BaseFee}`);
+    const L1ToL2MessageGasParams = await l1ToL2MessageGasEstimate.estimateAll(
+      {
+        from: arbitrumL1GatewayAddr,
+        to: arbitrumL2GatewayAddr,
+        l2CallValue: zkLinkCallValue,
+        excessFeeRefundAddress: l1WalletAddress,
+        callValueRefundAddress: arbitrumL2GatewayAddr,
+        data: l2GatewayCallData,
+      },
+      l1BaseFee,
+      l1Provider,
+    );
+    console.log(`Current retryable base submission price is: ${L1ToL2MessageGasParams.maxSubmissionCost.toString()}`);
+    console.log(`Estimate gasLimit on L2 is: ${L1ToL2MessageGasParams.gasLimit.toString()}`);
+    console.log(`Estimate maxFeePerGas on L2 is: ${L1ToL2MessageGasParams.maxFeePerGas.toString()}`);
+    console.log(`Estimate fee to pay on L1 is: ${L1ToL2MessageGasParams.deposit.toString()}`);
+
+    const adapterParams = utils.defaultAbiCoder.encode(
+      ['uint256', 'uint256', 'uint256'],
+      [L1ToL2MessageGasParams.maxSubmissionCost, L1ToL2MessageGasParams.gasLimit, L1ToL2MessageGasParams.maxFeePerGas],
+    );
+    console.log(`Send a l1 message to l2...`);
+    const l1Tx = await arbitrator.setSecondaryChainGateway(l1GatewayAddr, active, adapterParams, {
+      value: L1ToL2MessageGasParams.deposit,
+    });
+    const l1TxHash = l1Tx.hash;
+    console.log(`The l1 tx hash: ${l1TxHash}`);
+    const arbitratorReceipt = await l1Tx.wait();
+
+    const l1TxReceipt = new L1TransactionReceipt(arbitratorReceipt);
+
+    /**
+     * In principle, a single L1 txn can trigger any number of L1-to-L2 messages (each with its own sequencer number).
+     * In this case, we know our txn triggered only one
+     * Here, We check if our L1 to L2 message is redeemed on L2
+     */
+    const messages = await l1TxReceipt.getL1ToL2Messages(l2Wallet);
+    const message = messages[0];
+    console.log('Waiting for the L2 execution of the transaction. This may take up to 10-15 minutes ⏰');
+    const messageResult = await message.waitForStatus();
+    const status = messageResult.status;
+    if (status === L1ToL2MessageStatus.REDEEMED) {
+      console.log(`L2 retryable ticket is executed 🥳 ${messageResult.l2TxReceipt.transactionHash}`);
+    } else {
+      console.log(`L2 retryable ticket is failed with status ${L1ToL2MessageStatus[status]}`);
+    }
+  });