Scan ports to see which ones are sending most traffic If any of the ports

Scan ports to see which ones are sending most traffic

This preview shows page 59 - 64 out of 99 pages.

Scan ports to see which ones are sending most traffic If any of the ports sustain a traffic rate above the CpUtilRate threshold and the PortMinCong Timer expires Shutdown the ports which exceed their threshold + sends alarm
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© 2015 Avaya Inc. All rights reserved. 60 CP Overload Protection Feature Overview VSP 4000/7200/8000 Software Queue 16 CPU Queues Port Port CP FP Hardware Assist to protect CP from getting overloaded with Packet Processing CPU Queue Meters : Limit traffic to CP based on classified protocols Prevents one protocol from storming the CP impacting all other protocols non- IP traffic (ISIS, VLACP, CFM, IST,…) 9 CPU queues (Q15 - Q8 & Q0) IP traffic (VRRP,ICMP,OSPF,BGP,…) 7 cos queues (Q7 - Q1) Control traffic queues cannot be configured, modified to displayed. CP-limit cannot be configured on port
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© 2015 Avaya Inc. All rights reserved. 61 CP Overload Protection Feature Overview VSP 9000 Software Queue Protocol Meter Port Port CP SmartMAC Hardware Assist to protect CP from getting overloaded with Packet Processing and DoS attacks Port meters limit the number of packets going to CPU from a particular port. Port meter values can be modified using the cp-limit command. Smart Mac classifies packets to an internal protocol value (ISIS, VLACP, OSPF, BGP, …). Protocol Meters limit the number of packets from a particular protocol. These are not user configurable and are based on scaling numbers. Out of profile packets are dropped Priority Queues have a packet per second threshold. If exceeded, it flow controls all the way to the Fabric Access Device on the IO card. Hardware Credit mechanism provides bounded latency to service real-time control traffic under congestion and also provides weighted-fair bandwidth allocation among control packet classes of service. 8 Priority Queues Credits
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© 2015 Avaya Inc. All rights reserved. 62 Broadcast / Multicast Port Rate Limiting Feature Overview Enable Rate Limiting on the edge access ports to protect from broadcast/multicast storms Protects against non-CPU bound traffic Must understand multicast and broadcast traffic in the network before enabling rate limiting ERS Implementation Broadcast / Multicast Rate limiting allows the user to configure the allowed amount of bcast/mcast traffic on a port. When traffic exceeds this threshold, it is dropped. ERS 2500 / 3500 / 4000 / 5000, VSP 7000 1 10% of port speed Recommendation 10% ERS 8300 1-100% of port speed Recommendation 10% VSP 9000 / ERS 8800/8600 (legacy, E-series, M-series modules) Broadcast / multicast rate limiting Allowed rate is in packets per second (pps) Recommendation 3 times normal pps ERS 8800/8600 (R-series, RS-series modules) Broadcast / multicast bandwidth limiting Allowed rate is in kbps Recommendation 3 times normal kbps Edge Switch Server Rate Limiting Enabled
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© 2015 Avaya Inc. All rights reserved. 63 Multicast and Switch Clustering Supported Configurations & Features PIM-SM with Switch Clustering is supported on: ERS 8800/8600/8300 (SMLT/SLT/RSMLT) VSP 9000 (SMLT/SLT/RSMLT) PIM-SM is NOT supported on the ERS 5000 Switch Cluster.
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