Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 124
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112 ServerIron ADX NAT64 Configuration Guide
53-1002444-02
Configuring NAT
7
DRAFT: BROCADE CONFIDENTIAL
Configuring an address pool
Use the ip nat pool command to configure the address pool. For an example, refer to “Dynamic NAT
configuration example 1” on page 113.
Syntax: [no] ip nat pool <pool-name> <start-ip> <end-ip> netmask <ip-mask> | prefix-length
<length>
The <pool-name> variable specifies the name assigned to the pool. It can be up to 255 characters
long and can contain special characters and internal blanks. If you use internal blanks, you must
use quotation marks around the entire name.
The <start-ip> variable specifies the IP address at the beginning of the pool range. Specify the
lowest-numbered IP address in the range.
The <end-ip> variable specifies the IP address at the end of the pool range. Specify the
highest-numbered IP address in the range.
NOTE
The address range cannot contain any gaps. Make sure you own all the IP addresses in the range.
If the range contains gaps, you must create separate pools containing only the addresses you own.
The netmask <ip-mask> | prefix-length <length> parameter specifies a classical subnet mask
(example: netmask 255.255.255.0) or the length of a CIDR prefix (example: prefix-length 24). The
ServerIron ADX supports up to 192 global IP addresses.
NOTE
A ServerIron ADX can have a maximum of 192 global IP addresses, in a single pool or multiple pools.
Associating a range of private addresses with a pool
Use ip nat inside source list to associate a private address range with a pool of Internet addresses
and enable PAT. For an example, refer to “Dynamic NAT configuration example 1” on page 113.
Syntax: [no] ip nat inside source list <acl-id> pool <pool-name> overload
The inside source keyword specifies that the translation applies to private addresses sending
traffic to the Internet (inside source).
The list <acl-id> parameter specifies a standard or extended ACL. Named ACLS are not supported
with NAT. You must use a numbered ACL.
The pool <pool-name> parameter specifies the pool name. You must create the pool before you
can use it with this command.
The overload keyword enables PAT with the dynamic NAT and is required in order to configure
dynamic NAT.
Enabling IP NAT
When a ServerIron ADX is configured with switch code, NAT is enabled globally but when it is
configured with router code, it is enabled per-interface.
NOTE
ServerIron ADX does not support IP NAT inside and outside on the same physical interface.
- 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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