Table of Contents
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Features
This section describes the following SSR features:
•
Address-based and flow-based bridging
•
Port-based VLANs and protocol-based VLANs
•
IP and IPX routing
•
Layer-4 (application) switching
•
Security
•
Quality of Service (QoS)
•
Statistics
•
Management
Bridging
The SSR provides the following types of wire-speed bridging:
•
Address-based bridging – The SSR performs this type of bridging by looking up the
destination address in an L2 lookup table on the line card that receives the bridge
packet from the network. The L2 lookup table indicates the exit port(s) for the bridged
packet. If the packet is addressed to the SSR's own MAC address, the packet is routed
rather than bridged.
•
Flow-based bridging – The SSR performs this type of bridging by looking up an entry
in the L2 lookup table containing both the source and destination addresses of the
bridge packet.
Your choice of bridging method does not affect SSR performance. However, address-
based bridging is more efficient because it requires fewer table entries while flow-based
bridging provides tighter management and control over bridged traffic.
The SSR ports perform address-based bridging by default but can be configured to
perform flow-based bridging, instead of address-based bridging, on a per-port basis. A
port cannot be configured to perform both types of bridging at the same time.
SSR 8000/8600 Getting Started Guide
Chapter 1: Features Overview
7
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