将ASA防火墙更换为主用/备用故障转移对

已更新: 2023 年 6 月 21 日
文档 ID:220525

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    简介

    本文档介绍如何用主用/备用故障转移对替换自适应安全设备(ASA)防火墙。

    背景信息

    ASA防火墙支持两种故障切换配置：主用/主用故障切换和主用/备用故障切换。本文档介绍将ASA防火墙更换为主用/备用故障转移的过程。

    有2个防火墙：

    • firewall-a为主用/主用
    • firewall-b为辅助/备用

    故障切换配置中主设备和辅助设备之间的差异

    此命令意味着此防火墙始终将活动配置推送到辅助防火墙。

    # failover lan unit primary

    此命令意味着此防火墙始终从主防火墙接收活动配置。

    # failover lan unit secondary

    故障切换配置中主用设备和备用设备之间的差异

    此命令意味着此防火墙是故障切换对中正在运行的活动防火墙。

    # failover active

    此命令意味着此防火墙是在故障转移对中运行防火墙的备用防火墙。

    # failover standby

    更换辅助防火墙故障

    1.验证主防火墙是否处于活动状态并处于联机状态。例如： 

    firewall-a/pri/act# show failover 
Failover On 
Failover unit Primary
Failover LAN Interface: sync Port-channel1 (up)
Reconnect timeout 0:00:00
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 0 of 1292 maximum
MAC Address Move Notification Interval not set
Version: Ours 9.12(4)56, Mate 9.12(4)56
Serial Number: Ours JADSERIAL1, Mate JADSERIAL2
Last Failover at: 19:54:29 GMT May 23 2023
	This host: Primary - Active 
		Active time: 2204 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.1): Normal (Not-Monitored)
		  Interface outside (10.1.1.1): Normal (Not-Monitored)
		  Interface management (10.2.2.1): Normal (Not-Monitored)
	Other host: Secondary - Failed 
		Active time: 0 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.2): Normal (Not-Monitored)
		  Interface outside (10.1.1.2): Normal (Not-Monitored)
		  Interface management (10.2.2.2): Normal (Not-Monitored)

    2.关闭并实际移除辅助防火墙。

    3.以物理方式添加新的辅助防火墙并打开其电源。

    4.当新的辅助防火墙以默认出厂配置处于活动状态时，启用故障切换链路，  no shutdown  故障切换物理链路。

    示例：

    firewall-a/pri/act#conf t
firewall-a/pri/act#(config)#interface Port-channel1
firewall-a/pri/act#(config-if)#no shutdown
firewall-a/pri/act#(config)#exit
firewall-a/pri/act#
firewall-b/sec/stby#conf t
firewall-b/sec/stby#(config)#interface Port-channel1
firewall-b/sec/stby#(config-if)#no shutdown
firewall-b/sec/stby#(config)#exit
firewall-b/sec/stby#

    5.配置故障切换命令。例如：

    firewall-a/pri/act# sh run | inc fail
failover
failover lan unit primary
failover lan interface sync Port-channel1
failover link sync Port-channel1
failover interface ip sync 10.10.13.9 255.255.255.252 standby 10.10.13.10
no failover wait-disable
firewall-a/pri/act# 

firewall-b/sec/stby# sh run | inc fail
no failover
failover lan unit secondary
failover lan interface sync Port-channel1
failover link sync Port-channel1
failover interface ip sync 10.10.13.9 255.255.255.252 standby 10.10.13.10
no failover wait-disable
firewall-b/sec/stby#

    6.在新的辅助防火墙上启用故障切换。例如：

    firewall-b/sec/stby#conf t
firewall-b/sec/stby#(config)#failover
firewall-b/sec/stby#(config)#exit
firewall-b/sec/stby#
firewall-b/sec/stby# sh run | inc fail
failover
firewall-b/sec/stby#

    7.等待活动配置同步到新设备并验证正确的故障转移状态。例如：

    firewall-a/pri/act# 
Beginning configuration replication: Sending to mate.
End Configuration Replication to mate
firewall-a/pri/act# 
firewall-b/sec/stby# 
Beginning configuration replication from mate.
End configuration replication from mate.
firewall-b/sec/stby#
    note-icon

    注意：请注意，主防火墙(firewall-a)将配置发送到辅助防火墙(firewall-b)。

    8.在主用/主用上保存配置，并在新的辅助/备用上验证写内存。例如：

    firewall-a/pri/act#write memory
Building configuration...
Cryptochecksum: ad317407 935a773c 6c5fb66a c5edc342 
64509 bytes copied in 9.290 secs (7167 bytes/sec)
[OK]
firewall-a/pri/act#
firewall-b/sec/stby# 
May 24 2023 15:16:21 firewall-b : %ASA-5-111001: Begin configuration: console writing to memory
May 24 2023 15:16:22 firewall-b : %ASA-5-111004: console end configuration: OK
May 24 2023 15:16:22 firewall-b : %ASA-5-111008: User 'failover' executed the 'write memory' command.
May 24 2023 15:16:22 firewall-b : %ASA-5-111010: User 'failover', running 'N/A' from IP x.x.x.x , executed 'write memory'
firewall-b/sec/stby#

    9.验证两个防火墙上的故障切换对是否处于打开/打开活动状态。例如：

    firewall-a/pri/act# show failover 
Failover On 
Failover unit Primary
Failover LAN Interface: sync Port-channel1 (up)
Reconnect timeout 0:00:00
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 0 of 1292 maximum
MAC Address Move Notification Interval not set
Version: Ours 9.12(4)56, Mate 9.12(4)56
Serial Number: Ours JADSERIAL1, Mate JADSERIAL2
Last Failover at: 19:54:29 GMT May 23 2023
	This host: Primary - Active 
		Active time: 71564 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.1): Normal (Not-Monitored)
		  Interface outside (10.1.1.1): Normal (Not-Monitored)
		  Interface management (10.2.2.1): Normal (Not-Monitored)
	Other host: Secondary - Standby Ready 
		Active time: 0 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.2): Normal (Not-Monitored)
		  Interface outside (10.1.1.2): Normal (Not-Monitored)
		  Interface management (10.2.2.2): Normal (Not-Monitored)

firewall-b/sec/stby# show failover 
Failover On 
Failover unit Secondary
Failover LAN Interface: sync Port-channel1 (up)
Reconnect timeout 0:00:00
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 0 of 1292 maximum
MAC Address Move Notification Interval not set
Version: Ours 9.12(4)56, Mate 9.12(4)56
Serial Number: Ours JADSERIAL2, Mate JADSERIAL1
Last Failover at: 20:51:27 GMT May 23 2023
	This host: Secondary - Standby Ready 
		Active time: 0 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.2): Normal (Not-Monitored)
		  Interface outside (10.1.1.2): Normal (Not-Monitored)
		  Interface management (10.2.2.2): Normal (Not-Monitored)
	Other host: Primary - Active 
		Active time: 71635 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.1: Normal (Not-Monitored)
		  Interface outide (10.1.1.1): Normal (Not-Monitored)
		  Interface management (10.2.2.1): Normal (Not-Monitored)

    替换主防火墙故障

    1. 验证辅助防火墙是否处于活动状态并处于联机状态。例如：
    firewall-b/sec/act# show failover 
Failover On 
Failover unit Secondary
Failover LAN Interface: sync Port-channel1 (up)
Reconnect timeout 0:00:00
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 0 of 1292 maximum
MAC Address Move Notification Interval not set
Version: Ours 9.12(4)56, Mate 9.12(4)56
Serial Number: Ours JADSERIAL2, Mate JADSERIAL1
Last Failover at: 19:54:29 GMT May 23 2023
	This host: Secondary - Active 
		Active time: 2204 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.1): Normal (Not-Monitored)
		  Interface outside (10.1.1.1): Normal (Not-Monitored)
		  Interface management (10.2.2.1): Normal (Not-Monitored)
	Other host: Primary - Failed 
		Active time: 0 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.2): Normal (Not-Monitored)
		  Interface outside (10.1.1.2): Normal (Not-Monitored)
		  Interface management (10.2.2.2): Normal (Not-Monitored)
    1. 关闭并物理移除主防火墙。
    2. 以物理方式添加新的主防火墙并打开其电源。
    3. 现在，新的主防火墙使用默认出厂配置激活。
    4. 启用故障切换链路，  no shutdown  故障切换物理链路。例如：
    firewall-a/pri/stby#conf t
firewall-a/pri/stby#(config)#interface Port-channel1
firewall-a/pri/stby#(config-if)#no shutdown
firewall-a/pri/stby#(config)#exit
firewall-a/pri/stby#

firewall-b/sec/act#conf t
firewall-b/sec/act#(config)#interface Port-channel1
firewall-b/sec/act#(config-if)#no shutdown
firewall-b/sec/act#(config)#exit
firewall-b/sec/act#
    1. 保存配置.在上写入内存 secondary/active firewall 并确保  failover lan unit secondary  在启动配置中。
    note-icon

    注意：这是一个关键步骤。

    示例：

    firewall-b/sec/act# write memory
Building configuration...
Cryptochecksum: ad317407 935a773c 6c5fb66a c5edc342 

64509 bytes copied in 9.290 secs (7167 bytes/sec)
[OK]
firewall-b/sec/act# show start | inc unit
failover lan unit secondary
firewall-b/sec/act#
    1. 配置故障切换命令。
      1. 在辅助/主用防火墙上，必须首先设置 failover lan unit primary 命令，确保活动配置从辅助/主用防火墙推送到新的默认配置主/备用防火墙。例如：
    firewall-b/sec/act# sh run | inc unit
failover lan unit secondary
firewall-b/sec/act#

firewall-b/sec/act#conf t
firewall-b/sec/act#(config)#failover lan unit primary
firewall-b/sec/act#(config)#exit
firewall-b/sec/act# sh run | inc unit
failover lan unit primary
firewall-b/pri/act#

    b. 验证两台设备上的故障切换配置。例如：

    firewall-b/pri/act# sh run | inc fail
failover
failover lan unit primary
failover lan interface sync Port-channel1
failover link sync Port-channel1
failover interface ip sync 10.10.13.9 255.255.255.252 standby 10.10.13.10
no failover wait-disable
firewall-b/pri/act# 

firewall-a/sec/stby# sh run | inc fail
no failover
failover lan unit secondary
failover lan interface sync Port-channel1
failover link sync Port-channel1
failover interface ip sync 10.10.13.9 255.255.255.252 standby 10.10.13.10
no failover wait-disable
firewall-a/sec/stby#
    1. 在新主防火墙上启用故障切换。例如：
    firewall-a/sec/stby#conf t
firewall-a/sec/stby#(config)#failover
firewall-a/sec/stby#(config)#exit
firewall-a/sec/stby#

firewall-a/sec/stby# sh run | inc fail
failover
firewall-a/sec/stby#
    1. 等待活动配置同步到新设备并验证正确的故障转移状态。例如：
    firewall-b/pri/act# 
Beginning configuration replication: Sending to mate.
End Configuration Replication to mate
firewall-b/pri/act# 
firewall-a/sec/stby# 
Beginning configuration replication from mate.
End configuration replication from mate.
firewall-a/sec/stby#
    note-icon

    注意：请注意，主防火墙(firewall-b)将配置发送到辅助防火墙(firewall-a)。

    note-icon

    注意：不要在现在的主用/主用防火墙(firewall-b)上写入内存。

    1. 重新加载当前的主用/主用防火墙(firewall-b)，使其作为辅助/备用防火墙进行备份。
    firewall-b/pri/act#reload
    1. 在您执行“firewall-b reload”命令（等待15秒）后，切换到新的主防火墙(firewall-a)，然后输入  failover lan unit primary  命令，后跟  write memory .
    firewall-a/sec/act#conf t
firewall-a/sec/act#(config)#failover lan unit primary
firewall-a/sec/act#(config)#exit
firewall-a/sec/act# sh run | inc unit
failover lan unit primary
firewall-a/pri/act# write memory
Building configuration...
Cryptochecksum: ad317407 935a773c 6c5fb66a c5edc342 

64509 bytes copied in 9.290 secs (7167 bytes/sec)
[OK]
firewall-a/pri/act# show start | inc unit
failover lan unit primary
firewall-a/pri/act#
    1. 等待firewall-b完全启动，并将故障转移对作为辅助/备用设备加入。例如：
    firewall-a/pri/act# 
Beginning configuration replication: Sending to mate.
End Configuration Replication to mate
firewall-a/pri/act# 
firewall-b/sec/stby# 
Beginning configuration replication from mate.
End configuration replication from mate.
firewall-b/sec/stby#
    note-icon

    注意：请注意，主防火墙(firewall-a)将配置发送到辅助防火墙(firewall-b)。

    1. 保存配置，在主用/主用上写入内存，并验证新辅助/备用上的写入内存。例如：
    firewall-a/pri/act#write memory
Building configuration...
Cryptochecksum: ad317407 935a773c 6c5fb66a c5edc342 

64509 bytes copied in 9.290 secs (7167 bytes/sec)
[OK]
firewall-a/pri/act#

firewall-b/sec/stby# 
May 24 2023 15:16:21 firewall-b : %ASA-5-111001: Begin configuration: console writing to memory
May 24 2023 15:16:22 firewall-b : %ASA-5-111004: console end configuration: OK
May 24 2023 15:16:22 firewall-b : %ASA-5-111008: User 'failover' executed the 'write memory' command.
May 24 2023 15:16:22 firewall-b : %ASA-5-111010: User 'failover', running 'N/A' from IP x.x.x.x , executed 'write memory'
firewall-b/sec/stby#
    1. 验证两个防火墙上的故障切换对是否处于打开/打开活动状态。例如：
    firewall-a/pri/act# show failover 
Failover On 
Failover unit Primary
Failover LAN Interface: sync Port-channel1 (up)
Reconnect timeout 0:00:00
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 0 of 1292 maximum
MAC Address Move Notification Interval not set
Version: Ours 9.12(4)56, Mate 9.12(4)56
Serial Number: Ours JADSERIAL1, Mate JADSERIAL2
Last Failover at: 19:54:29 GMT May 23 2023
	This host: Primary - Active 
		Active time: 71564 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.1): Normal (Not-Monitored)
		  Interface outside (10.1.1.1): Normal (Not-Monitored)
		  Interface management (10.2.2.1): Normal (Not-Monitored)
	Other host: Secondary - Standby Ready 
		Active time: 0 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.2): Normal (Not-Monitored)
		  Interface outside (10.1.1.2): Normal (Not-Monitored)
		  Interface management (10.2.2.2): Normal (Not-Monitored)

firewall-b/sec/stby# show failover 
Failover On 
Failover unit Secondary
Failover LAN Interface: sync Port-channel1 (up)
Reconnect timeout 0:00:00
Unit Poll frequency 1 seconds, holdtime 15 seconds
Interface Poll frequency 5 seconds, holdtime 25 seconds
Interface Policy 1
Monitored Interfaces 0 of 1292 maximum
MAC Address Move Notification Interval not set
Version: Ours 9.12(4)56, Mate 9.12(4)56
Serial Number: Ours JADSERIAL2, Mate JADSERIAL1
Last Failover at: 20:51:27 GMT May 23 2023
	This host: Secondary - Standby Ready 
		Active time: 0 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.2): Normal (Not-Monitored)
		  Interface outside (10.1.1.2): Normal (Not-Monitored)
		  Interface management (10.2.2.2): Normal (Not-Monitored)
	Other host: Primary - Active 
		Active time: 71635 (sec)
		slot 0: FPR-2110 hw/sw rev (49.46/9.12(4)56) status (Up Sys)
		  Interface inside (10.0.0.1: Normal (Not-Monitored)
		  Interface outide (10.1.1.1): Normal (Not-Monitored)
		  Interface management (10.2.2.1): Normal (Not-Monitored)

    修订历史记录

    版本 发布日期 备注
    1.0
    21-Jun-2023
    初始版本
    TAC Authored

    由思科工程师提供

    • Rogelio Sanchez Nunez
      思科TAC工程师

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