Specifications

184 Implementing IBM System Networking 10Gb Ethernet Switches
򐂰 Run [no] qos dscp re-marking to turn on/off DSCP re-marking globally.
򐂰 Run show qos dscp to display the current DSCP parameters.
Control plane protection
You can use the following commands to limit the number of selected protocol packets
received by the control plane (CP) of the switch. These limits help protect the CP from
receiving too many protocol packets in a time period.
򐂰 Run qos protocol-packet-control packet-queue-map <packet queue number (0-40)>
<packet type> to configure a packet type to associate with each packet queue number.
Enter a queue number, followed by the packet type. You may map multiple packet types to
a single queue. The following packet types are allowed:
– 802.1x (IEEE 802.1x packets)
– application-cri-packets (critical packets of various applications, such as Telnet
and SSH)
– arp-bcast (ARP broadcast packets)
– arp-ucast (ARP unicast reply packets)
– bgp (BGP packets)
– bpdu (STP packets)
– cisco-bpdu (Cisco STP packets)
– dest-unknown (packets with destination not yet learned)
– dhcp (DHCP packets)
– icmp (ICMP packets)
– igmp (IGMP packets)
– ipv4-miscellaneous (IPv4 packets with IP options and TTL exception)
– ipv6-nd (IPv6 Neighbor Discovery packets)
– lacp (LACP/Link Aggregation protocol packets)
– lldp (LLDP packets)
– ospf (OSPF packets)
– ospf3 (OSPF3 Packets)
– pim (PIM packets)
– rip (RIP packets)
– system (system protocols, such as TFTP, FTP, Telnet, and SSH)
– udld (UDLD packets)
– vlag (VLAG packets)
– vrrp (VRRP packets)
򐂰 Run qos protocol-packet-control rate-limit-packetqueue <packet queue number
(0-40)> <1-10000> to configure the number of packets per second allowed for each
packet queue.
򐂰 Run no qos protocol-packet-control packet-queue-map <packet type> to clear the
selected packet type from its associated packet queue.
Important: This feature is supported only on RackSwitch G8264 switches.