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46 ServerIron ADX NAT64 Configuration Guide
53-1002444-02
NAT46 static mapping configuration
4
DRAFT: BROCADE CONFIDENTIAL
Route injection can be used in advanced static mapping configurations to inject IPv4 and IPv6
addresses into the respective network routing tables. Route distribution is then performed using
any one of the routing protocols supported by ServerIron ADX: OSPF, IS-IS, and BGP (IPv4 to IPv6).
This section is divided into three topics:
• Basic NAT46 static mapping configuration: This topic describes the tasks required to configure
a basic stateless NAT46 gateway.
• Stateless NAT46 static mapping configuration with route injection: This topic describes the
tasks required to configure a stateless NAT46 gateway that uses static route injection.
• Stateless NAT46 packet fragmentation configuration: This topic describes the options available
for handling packet fragmentation in a stateless NAT46 gateway.
Basic NAT46 static mapping configuration
A basic NAT46 gateway configuration uses a statically defined mapping table to make IPv6
resources available to IPv4 clients. The mapping table defines a one-to-one relationship between
an IPv4 address and an IPv6 address. In a stateless NAT46 configuration that uses static mapping,
all entries in the mapping table are configured manually.
Basic NAT46 static mapping configuration tasks include the following:
• “Configuring basic static NAT46 IPv6 prefixes” on page 46
• “Configuring basic NAT46 static mapping” on page 46
Configuring basic static NAT46 IPv6 prefixes
The NAT46 gateway uses a NAT46 IPv6 prefix to create a synthesized IPv6 source address on the
NAT46 gateway for each of the IPv4 clients. The synthesized IPv6 address is used to represent the
IPv4 clients to the IPv6 network.
Use the nat64 ipv6-prefix command to specify the IPv6 prefix. Enter a command such as the
following:
ServerIron ADX(config)# nat64 ipv6-prefix 2001:db8:8000::0/96 stateless
Syntax: [no] nat64 ipv6-prefix <prefix/length> stateless
The <prefix/length> variable specifies the NAT46 IPv6 prefix that will be used by the ServerIron
ADX when operating as a NAT46 gateway. Currently, the only supported prefix length is 96.
The stateless operand is required for stateless NAT46 gateway configurations. Only one IPv6 prefix
can be configured with this option.
Configuring basic NAT46 static mapping
In static NAT46 configurations, use the nat64 map command to specify an IPv4 address and map
that IPv4 address to the IPv6 address of a resource. Enter a command such as the following:
ServerIron ADX(config)# nat64 map 201.1.1.100 2001:db8:8000::100
Syntax: [no] nat64 map < ipv4-address> < ipv6-address>
The <ipv4-address> variable specifies an IPv4 address for the IPv4-IPv6 mapping. The
<ipv6-address> variable specifies an IPv6 address for the IPv4-IPv6 mapping.
- ServerIron ADX 1
- Document History 2
- Contents 3
- About This Document 9
- Command syntax conventions 10
- Notice to the reader 11
- Related publications 11
- Getting technical help 11
- NAT64 and NAT46 Overview 13
- Stateless NAT46 translation 14
- Protocol support 15
- NAT64 fragmentation support 17
- References 18
- Stateful NAT64 Configuration 19
- Operation of stateful NAT64 20
- 53-1002444-02 23
- Enabling connection logging 28
- Displaying NAT64 information 31
- Displaying NAT64 translations 32
- Displaying NAT64 statistics 33
- Displaying NAT64 resources 37
- Stateless NAT64 Configuration 39
- Operation of stateless NAT64 40
- High availability for NAT64 52
- Clearing NAT64 information 53
- Stateless NAT46 Configuration 55
- Operation of stateless NAT46 56
- High availability for NAT46 67
- Displaying NAT46 information 68
- Clearing NAT46 information 69
- Access Control Lists 71
- Rule-based ACLs 72
- Default ACL action 74
- ACL IDs and entries 74
- Configuring rule-based ACLs 77
- Modifying rule-based ACLs 85
- Reordering ACLs 86
- Applying ACLs to interfaces 87
- Adding comments to named ACLs 89
- ACL logging 94
- Displaying ACL log entries 95
- Clearing the ACL statistics 97
- Throttling the fragment rate 98
- DRAFT: BROCADE CONFIDENTIAL 100
- Enabling strict TCP mode 101
- Enabling strict UDP mode 102
- ACLs and ICMP 103
- Numbered ACLs 104
- Named ACLs 105
- • Enable the strict TCP mode 107
- IPv6 Access Control Lists 109
- Configuration notes 110
- Processing of IPv6 ACLs 110
- Configuring IPv6 ACLs 111
- IPv6 ACL syntax 114
- Syntax Description 116
- Displaying IPv6 ACLs 118
- Logging IPv6 ACLs 119
- Network Address Translation 121
- Configuring NAT 122
- Configuring static NAT 123
- Configuring dynamic NAT 123
- Enabling IP NAT 124
- NAT configuration examples 125
- IP NAT with VIP overlap 129
- Translation timeouts 130
- Stateless static IP NAT 132
- IP NAT redundancy 133
- Displaying NAT information 144
- Displaying NAT translation 147
- Displaying VRRPE information 148
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