Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 47
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ServerIron ADX NAT64 Configuration Guide 35
53-1002444-02
Stateless NAT64 static mapping configuration
3
DRAFT: BROCADE CONFIDENTIAL
ServerIron ADX(config-vlan-1)# interface ve 7
ServerIron ADX(config-vlan-1)# exit
ServerIron ADX(config)# interface ve 7
ServerIron ADX(config-vif-7)# ipv6 address 2001:db8:80::80
ServerIron ADX(config-vif-7)# exit
2. OSPF and OSPFv6 are configured for static route redistribution. The IPv6 side is configured as
OSPF Area 0 and the IPv4 side is configured as OSPF Area 1.
ServerIron ADX(config)# ipv6 router ospf
ServerIron ADX(config-ospf6-router)# redistribute static
ServerIron ADX(config-ospf6-router)# area 0
ServerIron ADX(config-ospf6-router)# exit
ServerIron ADX(config)# router ospf
ServerIron ADX(config-ospf-router)# redistribute static
ServerIron ADX(config-ospf-router)# area 1
3. The NAT64 IPv4 prefix is configured with static route injection.
ServerIron ADX(config)# nat64 ipv4-prefix 200.1.1.0/24 inject-static-route
4. The NAT64 IPv6 prefix is configured with static route injection.
ServerIron ADX(config)# nat64 ipv6-prefix 2001:db8:64::0/96
inject-static-route stateless
If you are running a ServerIron ADX build prior to 12.4.00, you must specify an interface and
port number.
ServerIron ADX(config)# nat64 ipv6-prefix 2001:db8:8000::0/96
inject-static-route stateless ve 7 stateless
5. An IPv4 address (200.1.1.100) within the subnet defined by the NAT64 IPv4 prefix is mapped
to the IPv6 address (2001:db8:80::80) specified in step 1.
ServerIron ADX(config)# nat64 map 200.1.1.100 2001:db8:80::80
In a static NAT64 configuration such as this one, the only routes injected into the local routing table
are routes for IPv4 addresses that are mapped specifically to IPv6 addresses. In this example, only
the route to 200.1.1.1 will be distributed to the IPv4 network and not the route to the entire subnet.
In dynamic NAT64 configurations, routes for all IPv4 addresses that are learned are distributed. For
more information, refer to “Stateless NAT64 dynamic mapping configuration” on page 36.
NOTE
While this example describes NAT64 route injection for the OSPF protocol, you can also use this
feature with BGP and IS-IS. Only the routing protocol configurations will differ.
Stateless NAT64 packet fragmentation configuration
Packets from the IPv6 client to the IPv4 server can be too large and need to be split into two IPv4
packets. The following describes the criteria for judging that packets are too large:
• Regular packets: IP packet total length greater than 1480 bytes
• Fragmented packets: IP packet total length greater than 1480 + 8 bytes
If the packets exceed these limitations, one of the following actions will be taken:
- 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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