When we configure the Azure VPN Gateway with Cisco ASA there will be issue realted to routing type so we need to enable UsePolicyBasedTrafficSelectors in the Azure Connection to Solve the issue .
$RG1 = "****************"
$Connection16 = "****************"
$connection6 = Get-AzureRmVirtualNetworkGatewayConnection -Name $Connection16 -ResourceGroupName $RG1
$newpolicy6 = New-AzureRmIpsecPolicy -IkeEncryption AES256 -IkeIntegrity SHA384 -DhGroup DHGroup24 -IpsecEncryption AES256 -IpsecIntegrity SHA1 -PfsGroup PFS24 -SALifeTimeSeconds 28800 -SADataSizeKilobytes 4608000
Set-AzureRmVirtualNetworkGatewayConnection -VirtualNetworkGatewayConnection $connection6 -IpsecPolicies $newpolicy6
Set-AzureRmVirtualNetworkGatewayConnection -VirtualNetworkGatewayConnection $connection6 -IpsecPolicies $newpolicy6 -UsePolicyBasedTrafficSelectors $True
PS Azure:\> $connection6.UsePolicyBasedTrafficSelectors
True
Azure:\
PS Azure:\> $connection6.IpsecPolicies
$RG1 = "****************"
$Connection16 = "****************"
$connection6 = Get-AzureRmVirtualNetworkGatewayConnection -Name $Connection16 -ResourceGroupName $RG1
$newpolicy6 = New-AzureRmIpsecPolicy -IkeEncryption AES256 -IkeIntegrity SHA384 -DhGroup DHGroup24 -IpsecEncryption AES256 -IpsecIntegrity SHA1 -PfsGroup PFS24 -SALifeTimeSeconds 28800 -SADataSizeKilobytes 4608000
Set-AzureRmVirtualNetworkGatewayConnection -VirtualNetworkGatewayConnection $connection6 -IpsecPolicies $newpolicy6
Set-AzureRmVirtualNetworkGatewayConnection -VirtualNetworkGatewayConnection $connection6 -IpsecPolicies $newpolicy6 -UsePolicyBasedTrafficSelectors $True
PS Azure:\> $connection6.UsePolicyBasedTrafficSelectors
True
Azure:\
PS Azure:\> $connection6.IpsecPolicies