<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-07-06</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001175609</issuerCik>
        <issuerName>CAVIUM, INC.</issuerName>
        <issuerTradingSymbol>CAVM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001191319</rptOwnerCik>
            <rptOwnerName>THORNLEY ANTHONY S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CAVIUM, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2315 N. FIRST STREET</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Common Stock</value>
            </securityTitle>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>U</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
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                    <value>9011</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
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                    <value>135222</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
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    <derivativeTable>
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            <transactionTimeliness>
                <value></value>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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            <expirationDate>
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                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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            <securityTitle>
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            <deemedExecutionDate></deemedExecutionDate>
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            <transactionTimeliness>
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            <expirationDate>
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            </expirationDate>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                <value>2018-07-06</value>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>D</transactionCode>
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            <transactionTimeliness>
                <value></value>
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                <transactionShares>
                    <value>3000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
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            <expirationDate>
                <value>2021-06-19</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                </sharesOwnedFollowingTransaction>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option Right to Buy</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>76.38</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-07-06</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3000</value>
                </transactionShares>
                <transactionPricePerShare>
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                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F2"/>
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            <expirationDate>
                <value>2022-06-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Disposed of pursuant to the Agreement and Plan of Merger, dated as of November 19, 2017 (the &quot;Merger Agreement&quot; and, the transaction contemplated therein, the &quot;Merger&quot;), by and among Cavium, Inc. (the &quot;Company&quot;), Marvell Technology Group Ltd. (&quot;Marvell&quot;), and Kauai Acquisition Corp., an indirect wholly owned subsidiary of Parent (&quot;Merger Sub&quot;), whereby each share of Company common stock was canceled and automatically converted into $40.00 in cash, without interest, and 2.1757 shares of Marvell common stock (together, the &quot;Per Share Amount&quot;), with the fractional shares being paid in cash as provided in the Merger Agreement. The market value of the Per Share Amount is $86.43 per share, based on the trading price of Marvell common stock as of the end of trading on July 5, 2018.</footnote>
        <footnote id="F2">Disposed of pursuant to the Merger Agreement, whereby at the effective time of the Merger (the &quot;Effective Time&quot;) each outstanding and vested Company stock option held by non-employee directors (other than directors who will serve on Marvell's board of directors following the Merger) was converted into the right to receive an amount in cash equal to the positive difference, if any, between (x) (A) $40.00 plus (B) the product of (i) 2.1757 multiplied by (ii) the volume weighted average trading price of Marvell common stock on Nasdaq for the five (5) consecutive trading days ending on the trading day immediately preceding the closing date of the Merger (the sum, the &quot;Equity Award Cash Consideration,&quot; calculated to equal $86.83) minus (y) the exercise price applicable to the Company stock option, multiplied by (z) the number of shares of Company common stock for which the Company stock option was exercisable, less any amount required to be withheld.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Anthony S. Thornley</signatureName>
        <signatureDate>2018-07-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
