Configuring Optimization Settings : Configuring hardware-assist rules (standard mode only)
  
Configuring hardware-assist rules (standard mode only)
You configure hardware-assist rules in the Hardware Assist Rules page.
On SteelHead Interceptors equipped with one or more of these bypass cards, you can configure the SteelHead Interceptor to automatically bypass all User Datagram Protocol (UDP) connections:
• Two-Port SR Multimode Fiber 10 Gigabit-Ethernet PCI-E
• Two-Port LR Single Mode Fiber 10 Gigabit-Ethernet PCI-E
• Four-Port SR Fiber 10 Gigabit-Ethernet PCI-E
• Four-Port LR Fiber 10 Gigabit-Ethernet PCI-E
• Two-Port SR4 Fiber 40 Gigabit-Ethernet PCI-E
• Two-Port LR4 Fiber 40 Gigabit-Ethernet PCI-E
You can also configure rules for bypassing specific Transmission Control Protocol (TCP) connections. By automatically bypassing these connections, you can decrease the workload on the local SteelHeads.
For a hardware-assist rule to be applied to a specific bypass card, the corresponding in-path interface must be enabled and have an IP address.
To configure hardware-assist rules
1. Choose Optimization > Optimization: Hardware Assist Rules to display the Hardware Assist Rules page.
Hardware Assist Rules page
2. Under Hardware Assist Rules Settings, enable pass-through traffic as follows:
– To automatically pass through all UDP traffic, select the Enable Hardware Passthrough of All UDP Traffic check box.
– To pass through TCP traffic based on the configured rules, select the Hardware Passthrough TCP Traffic check box.
TCP pass-through traffic is controlled by rules. The next step describes how to set up hardware‑ assist rules.
All hardware-assist rules are ignored unless this check box is selected. No TCP traffic will be passed through.
3. Click Apply to apply the settings to the current configuration.
4. Under TCP Hardware Assist Rules, complete the configuration as described in this table.
Control
Description
Add a New Rule
Displays the controls to add a new rule.
Type
Select one of these rule types:
• Accept—Accept rules identify traffic that is optimized.
• Pass-Through—Pass-through rules identify traffic that is passed through the network unoptimized.
Position
Select Start, End, or a rule number:
In general, filter traffic that is to be unoptimized, discarded, or denied before processing rules for traffic that is to be optimized.
Subnet A
Specify an IP address and mask for the subnet that can be both source and destination together with Subnet B.
Use this format: xxx.xxx.xxx.xxx/xx
You can specify all or 0.0.0.0/0 as the wildcard for all traffic.
Subnet B
Specify an IP address and mask for the subnet that can be both source and destination together with Subnet A.
Use this format: xxx.xxx.xxx.xxx/xx
You can specify all or 0.0.0.0/0 as the wildcard for all traffic.
VLAN Tag ID
Optionally, specify the VLAN identification number to set the VLAN tag ID.
• Specify all to specify the rule applies to all VLANs.
• Specify Untagged to specify the rule applies to nontagged connections.
Pass-through traffic maintains any preexisting VLAN tagging between the LAN and WAN interfaces.
To complete the implementation of VLAN tagging, you must set the VLAN tag IDs for the in-path interfaces that the SteelHead Interceptor uses to communicate with other SteelHead Interceptors. For details about configuring the in-path interface for the SteelHead Interceptor, see Configuring in-path rules.
Description
Optionally, include a description of the rule.
Add
Adds the new hardware-assist tracing rule to the list.
The SteelHead Interceptor refreshes the Hardware Assist Rules table and applies your modifications to the running configuration, which is stored in memory.
Move Selected Rules
Moves the selected rules. Click the arrow next to the desired rule position; the rule moves to the new position.
The default rule cannot be reordered and is always listed last.
Remove Selected Rules
Select the check box next to the name and click Remove Selected Rules.
The default rule cannot be removed and is always listed last.
5. To modify an existing rule:
– Click on the value in the Rule column to expand a panel that contains the settings for that rule.
– Modify as necessary and click Apply.
Hardware Assist Rules page
6. Click Save to save your changes to the running configuration.
7. Click Reset to restore the previous values.