Brocade Communications Systems Brocade ICX 6650 6650 User Manual
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Brocade ICX 6650 Security Configuration Guide
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CPU rate-limiting
CPU rate limiting identifies the traffic type and assigns a maximum rate limit to the traffic type. The
traffic types which are subjected to rate limiting include broadcast ARP and other exceptions, such
as TTL exceed, IP MTU failed, reverse path check failed, IP fragments, and unsupported tunneling.
Each of these types is rate-limited individually.
shows the rate limits for each rate-limited packet type and the platforms to which each
rate limit applies. These rates cannot be configured by users currently.
TABLE 68
CPU rate limits for packet type and applicable platforms
Packet type
Rate limit in
packets per second
ARP
6000
IP TTL exceed, or
Reverse path check failed
150
IP MTU exceed,
IP tunnel-terminated packets which are fragmented or has options, or
IP tunnel-terminated packets with unsupported GRE tunnel header
3000
IP Unicast packets mirrored to CPU due to ICMP redirect
100
Bridge packets forward to CPU
5000