Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual download pdf (Page 139)

ServerIron ADX NAT64 Configuration Guide 127

53-1002444-02

IP NAT redundancy

DRAFT: BROCADE CONFIDENTIAL

ServerIronADX(config)# vlan 100

ServerIronADX(config-vlan-100)# untagged ethernet 1/1

ServerIronADX(config-vlan-100)# router-interface ve 1

ServerIronADX(config-vlan-100)# exit

ServerIronADX(config)# vlan 200

ServerIronADX(config-vlan-200)# untagged ethernet 1/2

ServerIronADX(config-vlan-200)# router-interface ve 2

ServerIronADX(config-vlan-200)# exit

ServerIronADX-A(config)# interface ve 1

ServerIronADX-A(config-ve-1)# 10.10.20.2 255.255.255.0

ServerIronADX-A(config-ve-1)# ip nat outside

ServerIronADX-A(config-ve-1)# exit

ServerIronADX-A(config)# interface ve 2

ServerIronADX-A(config-ve-2)# 10.10.10.2 255.255.255.0

ServerIronADX-A(config-ve-2)# ip nat inside

ServerIronADX-A(config-ve-2)# exit

ServerIronADX-B(config)# interface ve 1

ServerIronADX-B(config-ve-1)# 10.10.20.4 255.255.255.0

ServerIronADX-A(config-ve-1)# ip nat outside

ServerIronADX-B(config-ve-1)# exit

ServerIronADX-B(config)# interface ve 2

ServerIronADX-B(config-ve-2)# 10.10.10.4 255.255.255.0

ServerIronADX-A(config-ve-2)# ip nat inside

ServerIronADX-B(config-ve-2)# exit

4. Configure a standard or extended ACL identifying each private address range for which you

wish to provide NAT:

ServerIronADX(config)# access-list 10 permit 10.10.1.0 0.0.0.255

5. Configure a dynamic NAT pool on each ServerIron ADX, and assign device ownership to the NAT

pool. In this example, ServerIron ADX A is assigned as the NAT pool owner, and therefore takes

the higher priority value:

ServerIronADX-A(config)# ip nat pool P1 10.10.20.21 10.10.20.40 prefix-len 24

ServerIronADX-A(config)# ip nat pool P1 port-pool-range 2

ServerIronADX-B(config)# ip nat pool P1 10.10.20.21 10.10.20.40 prefix-len 24

ServerIronADX-B(config)# ip nat pool P1 port-pool-range 1

6. Tie the inside source ACL to the dynamic NAT pool and enable PAT (overload)

ServerIronADX(config)# ip nat inside source list 10 pool P1 overload

7. Configure the VRRP-E parameters. The IP address configured with the ip-address command is

the address that will be backed up by VRRP-E. The track-port commands enable tracking on

the interfaces on the other side of the ServerIron ADX that complete the link for the VRID. For

example, traffic that is addressed to VRID 1 enters the ServerIron ADX through VE interface 1

and leaves the ServerIron ADX through VE interface 2. Under normal circumstances, if VE

interface 2 goes down, VRID 1 remains active.

When you track interfaces for a VRID, if the state of one of the tracked interfaces changes, the

ServerIron ADX associates the change with the VRID interface. For example, if virtual routing

interface 2 goes down, the ServerIron ADX associates this state change with VRID 1 and

causes VRRP-E to fail over the VRID to the other ServerIron ADX. The ServerIron ADX on which

you configure the higher VRRP-E backup priority becomes the default master for the VRID,

while other ServerIron ADX becomes the backup.

In this example, ServerIron ADX A is configured as the default master for the HA setup.

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Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 139

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