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ServerIron Switching and Routing Guide
2 - 32 © 2012 Brocade Communications Systems, Inc. May 2012
If you configure an IP address on an individual port, you can configure Layer 3 interface parameters on that port.
If you configure a virtual routing interface, you can configure Layer 3 interface parameters only on the virtual
routing interface. This also applies to security features such as SYN-Guard and SYN-Defense.
The source-nat Parameter
Some configurations require use of the source-nat parameter. This parameter changes the source IP address in a
packet from a client to a server. When the ServerIron and server are in different sub-nets, this parameter ensures
that the client’s request appears to the real server to have come from the ServerIron, and ensures that the server
reply goes back through the ServerIron.
In software release 07.2.x, use of this parameter also requires that you use the server source-ip or source-ip
command to configure an IP interface in the same sub-net as the server. In TrafficWorks 8.0, you do not need
these commands. Instead, use the ip address command to configure an IP interface that is in the same sub-net
as the server. Configure the interface on one of the following:
• The physical port connected to the server
• The virtual routing interface associated with the port-based VLAN that contains the port connected to the
server
Disabling Layer 2 Switching
By default, ServerIron Chassis devices support Layer 2 switching. In Release 08.1.00R and later, if you want to
disable Layer 2 switching, you can do so globally or on individual ports with the route-only command. This
command is supported only on an interface facing a real server.
As a best practice, Brocade recommends you do not put route-only on the interfaces where servers are
connected.
Configuring a Decnet Protocol VLAN
All ports will by default be assigned to the VLAN when initially created. VLAN Membership can be modified using
the dynamic, static, or exclude commands.
To create a Decnet protocol VLAN on the ServerIron, enter commands such as the following:
ServerIron(config)# decnet-proto
ServerIron(config-decnet-proto)# static e 1/15 to 1/16
ServerIron(config-decnet-proto)# exclude e 1/1 to 1/14 e 1/18
This example creates a Decnet protocol VLAN with permanent port membership of 15 and 16 with port 17 as a
dynamic member port (on module 1).
Syntax: [no] decnet-proto
Configuring an IP Interface
In Router (R) images, use the ip address command to configure an IP interface for use with IP forwarding. You
must configure the IP interface on a virtual routing interface. You cannot configure the interface on a physical port.
See router-interface.
To add an IP interface, enter commands such as the following:
ServerIron(config)# interface ve 1
ServerIron(config-vif-1)# ip address 10.10.10.1 255.255.255.0
The interface ve 1 command changes the CLI to the configuration level for virtual routing interface 1. The ip
address command adds an IP interface.
Syntax: [no] ip address | nat-address | standby-address <ip-addr> <ip-mask> I <ip-addr>/<mask-bits>
- ServerIron Traffic Works 1
- Contents 3
- Chapter 1 7
- About this Guide 7
- Getting technical help 8
- Document feedback 8
- Chapter 2 9
- Static MAC Entries 10
- Displaying MAC Addresses 10
- Configuring Fast Port Span 11
- Configuring Fast Uplink Span 11
- Trunk Groups 14
- Changing the Tag Type 15
- Enabling Aggregated VLAN 15
- Configuring Uplink Ports 16
- Setting a Priority for a VLAN 17
- Dual-Mode VLAN Ports 20
- MAC Filters 22
- Setting the MAC Age Time 24
- Address-Lock Filters 25
- Setting the Broadcast Limit 26
- Assigning a Gateway List 26
- Multicast 27
- Adding an IP Interface 28
- Adding a Static IP Route 30
- Adding a Static ARP Entry 30
- Clearing the ARP Cache 31
- Clearing the IP Cache 31
- Setting System Max 31
- Adding a Static MAC Address 32
- Displaying the IP Host Table 34
- Displaying Static ARP Entries 36
- Displaying the IP Route Table 37
- Disabling Layer 2 Switching 40
- Configuring an IP Interface 40
- Configuring an IP Filter 41
- SLB Example 42
- TCS Uses of Filters 42
- Setting the TTL 43
- Enabling RIP 44
- RIP Timers 45
- Enabling Redistribution 46
- Denying Redistribution 46
- Permitting Redistribution 47
- Learning RIP Default Routes 48
- Dynamic Link Aggregation 49
- Valid Aggregate Links 50
- Flexible Trunk Eligibility 52
- Enabling Link Aggregation 53
- Link Aggregation Parameters 55
- About Blocked Ports 57
- Switching and Routing 61
- Syntax: clear link-aggregate 61
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