Brocade Communications Systems ServerIron ADX 12.4.00 Service Manual Page 183
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172 ServerIron ADX Firewall Load Balancing Guide
53-1002436-01
FWLB selection algorithms
A
DRAFT: BROCADE CONFIDENTIAL
Specifying a list of application ports for use when hashing
To specify a list of TCP/UDP ports for hashing, enter the following commands.
ServerIronADX(config)# server fw-group 2
ServerIronADX(config-fw-2)# hash-ports 69 80
Syntax: [no] hash-ports <num> [<num...>]
The <num> parameters specify TCP or UDP port numbers. You can specify up to 16 port numbers
on the same command line.
Overriding the global hash values
By default, the ServerIron ADX uses the hash mask you configure for the firewall group for all
hash-based load balancing of firewall traffic. You can override the global hash mask for specific
traffic based on source or destination address information.
Here is a CLI example.
ServerIronADX(config)# access-list 100 permit ip any 192.168.1.16 0.0.0.15
ServerIronADX(config)# access-list 100 permit ip any 192.168.2.0 0.0.0.255
ServerIronADX(config)# access-list 100 permit ip any 192.168.3.192 0.0.0.63
ServerIronADX(config)# access-list 100 permit ip any 192.168.4.0 0.0.0.255
ServerIronADX(config)# access-list 100 permit ip any 192.168.3.160 0.0.0.31
ServerIronADX(config)# access-list 100 permit ip any 192.168.3.0 0.0.0.127
ServerIronADX(config)# access-list 100 permit ip any 64.129.1.0 0.0.0.255
ServerIronADX(config)# server fw-group-2
ServerIronADX(config-fw-2)# hash-mask 255.255.255.255 0.0.0.0
ServerIronADX(config-fw-2)# policy-hash-acl 100 255.255.255.255 255.255.255.255
In this example, you configure FWLB to use the hash mask 255.255.255.255 0.0.0.0.
Also, in this example, FWLB will use the hash mask 255.255.255.255 0.0.0.0 for all traffic except
the traffic that matches ACL 100.
Syntax: [no] hash-mask <dst-mask> <src-mask> | <dst-ipv6-mask> <src-ipv6-mask>
NOTE
IPv4 and IPv6 address formats cannot be mixed. Addresses must be entered in the same format.
The <dst-mask> parameter specifies the IPv4 destination address mask.
The <src-mask> parameter specifies the IPv4 source address mask.
The <dst-ipv6-mask> parameter specifies the IPv6 destination address mask.
The <src-ipv6-mask> parameter specifies the IPv6 source address mask.
Syntax: [no] server policy-hash-acl <acl-id> <dst-mask> <src-mask> | <dst-ipv6-mask>
<src-ipv6-mask>
The <acl-id> parameter specifies a standard or extended ACL identifier.
The <dst-mask> parameter specifies the IPv4 destination address mask.
The <src-mask> parameter specifies the IPv4 source address mask.
The <dst-ipv6-mask> parameter specifies the IPv6 destination address mask.
The <src-ipv6-mask> parameter specifies the IPv6 source address mask.
- ServerIron ADX 1
- Document History 2
- Contents 3
- About This Document 8
- Document conventions 9
- Notice to the reader 10
- Related publications 11
- ServerIron FWLB Overview 12
- Firewall environments 14
- Load balancing paths 15
- Firewall selection 17
- Hashing mechanism 17
- Stateful FWLB 18
- Health checks 18
- Path health checks 19
- Application health checks 19
- Firewall health check debug 21
- Basic FWLB topology 22
- HA FWLB topology 23
- Failover 24
- Router paths 24
- Multizone FWLB topology 25
- FWLB configuration limits 26
- Configuring Basic FWLB 28
- IPv4 Firewall-1 37
- IPv4 Firewall-2 37
- External 40
- Internal 40
- Firewall-2 42
- Firewall-1 42
- Configuring HA FWLB 48
- Session limits 49
- Session aging 49
- Task Reference 52
- Configuring the firewall port 53
- Configuring the partner port 54
- Configuring the router port 55
- Configuring the firewalls 55
- Adding the firewalls 55
- Connection rate control 57
- Complete CLI example 62
- HA FWLB with VRRP 73
- Usage notes 78
- Configuring Multizone FWLB 82
- Zone 3Zone 2 84
- Zone1-SI(config)# no span 85
- Failover algorithm 92
- Commands on Zone1-SI-A zone 1 92
- DRAFT: BROCADE CONFIDENTIAL 100
- 53-1002436-01 102
- SI-A SI-A 104
- In this chapter 124
- NAT firewalls 124
- Extra firewall method 129
- Access policy method 130
- Specifying the partner port 134
- Specifying the router ports 134
- Configuring FWLB and SLB 146
- Configuring SLB-to-FWLB 148
- Configuring the real servers 149
- Enabling SLB-to-FWLB 150
- Configuring FWLB-to-SLB 152
- Enabling FWLB-to-SLB 154
- FWLB configuration overview 166
- TCP/UDP port statistics 169
- FWLB path information 172
- Field Description 173
- • 6 – TCP 174
- • 17 – UDP 174
- In this appendix 176
- FWLB selection algorithms 182
- Configuration guidelines 186
- Denying FWLB 187
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