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Downgrade Limitations for a Stack with Multiple Device Models
Last Updated
Sep 03, 2026
latest software version that supports all units in the stack. For example, a stack comprising ICX 8100-C08PF-X (supported from FastIron release 10.0.10g_cd1) and ICX 8100-C16P-X (supported from FastIron release 10.0.10h_cd1) can only be downgraded to FastIron release 10.0.10h_cd1. When a downgrade is attempted to an unsupported release, an informational message is displayed indicating that the operation is not permitted.
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Packet Buffer Management
Last Updated
Sep 03, 2026
) 560 Gbps (24F/48F/48ZP) 8 MB ICX 7650 480 Gbps 564 Gbps (IO 48ZP/48ZF) 328 Gbps (IO 48P) 8 MB ICX 7850 2.0 Tbps 3.2 Tbps 32 MB ICX 8100 300 Gbps 3 MB ICX 8200 300 Gbps 3 MB ICX 7850 devices support cut-through mode although they run in store-and-forward mode by default. If enabled, the cut-through
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New In This Document
Last Updated
Sep 03, 2026
Configuration Guide. All chapters. Rate Limiting Minor updates on content throughout to address defects. All chapters. Key Features and Enhancements in FastIron 10.0.10g_cd1 Feature Description Described in Support for ICX 8100 devices with 10g ports FastIron release 10.0.10g_cd1 introduces support
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Stacking Deployment Introduction
Last Updated
Sep 03, 2026
Units Valid Stack Unit IDs ICX 8100 4 1–4 ICX 7150 8 1–8 ICX 8200 12 1–12 ICX 7850 12 1–12 ICX 7550 12 1–12 ICX 7650 12 1–12 All ICX 8200 devices must pre-load licenses. A 2 X 10-Gbps license is required to enable 10-Gbps stacking ports that would allow a unit to join a stack. For ICX 8200 devices
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Applying Egress ACLs to Control (CPU) Traffic
Last Updated
Sep 03, 2026
traffic, use the enable egress-acl-on-cpu-traffic command. CPU traffic on standby and member units in ICX 7150, ICX 7550, ICX 7850, and ICX 8200 stacks is, by default, subjected to outbound ACL filtering. In contrast, ICX 7150, ICX 7550, ICX 7850, ICX 8100, and ICX 8200 standalone devices and stack
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New in This Document
Last Updated
Sep 03, 2026
New in This Document New in This Document New in This Document The following table describes changes to this guide for FastIron 10.0.20. Key Features and Enhancements in FastIron 10.0.20b_cd1 Feature Description Reference Introduction of RUCKUS ICX 8100 support Support for RUCKUS ICX 8100 is
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Maximum Number of LAGs
Last Updated
Sep 03, 2026
Valid Number of Ports in a Group Static LACP ICX 8100 ICX 8200 128 128 1 to 8 The ICX 8100 and ICX 8200 can scale up to 1024 LAG ports and are also limited to the number of ports on the device. ICX 7550 ICX 7650 ICX 7850 256 256 1 to 16 The ICX 7550, ICX 7650, and ICX 7850 devices can scale up to a maximum of 2048 LAG ports.
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Avoiding Being a Victim in a Smurf Attack
Last Updated
Sep 03, 2026
threshold values for ICMP packets that are targeted at the router itself or that pass through an interface and drop them when the thresholds are exceeded. ICX 8200 and ICX 8100 devices do not support the ip icmp attack-rate burst-normal burst-max command. Refer to Defense against ICMP Denial of
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Avoiding Being a Victim in a Smurf Attack
Last Updated
Sep 03, 2026
threshold values for ICMP packets that are targeted at the router itself or that pass through an interface and drop them when the thresholds are exceeded. ICX 8200 and ICX 8100 devices do not support the ip icmp attack-rate burst-normal burst-max command. Refer to Defense against ICMP Denial of
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Last Updated
Sep 03, 2026
because of TCP MSS adjustment. Both features look for the same fields in the packet, so either one of the ACL rules can be hit. TCP MSS Adjustment Limitations TCP MSS Adjustment Limitations Defense against TCP Denial of Service Attacks on ICX 8100 and ICX 8200 Devices Defense against TCP Denial of