DELL S50V User Manual

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Quality of Service
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Configure Port-based Rate Policing
Rate policing ingress traffic on an interface using the command 
rate
 
police
 from INTERACE mode, as 
shown in 
. If the interface is a member of a VLAN, you may specify the VLAN for which 
ingress packets are policed.
Figure 41-4.  Rate Policing Ingress Traffic
Figure 41-5.  Displaying your Rate Policing Configuration
FTOS Behavior: 
On the C-Series and S-Series, rate shaping is effectively rate limiting because of its smaller buffer size.
On the E-Series:
— 802.1Q-priority tagged frames are sometimes not rate-limited according to the configured rate-limit 
value. Only hybrid ports reliably apply the configured rate limit to priority-tagged frames 
— Rate-limiting may not be applied according to the configured rate-limit value on an interface on 
which the dot.1p priority is changed on incoming traffic using the 
dot1p-priority 
command 
FTOS#config t
FTOS(conf)#interface gigabitethernet 1/0
FTOS(conf-if)#rate police 100 40 peak 150 50
FTOS(conf-if)#end
FTOS#
FTOS#show interfaces gigabitEthernet 1/2 rate police 
  Rate police 300 (50) peak 800 (50) 
    Traffic Monitor 0: normal 300 (50) peak 800 (50) 
      Out of profile yellow 23386960 red 320605113 
    Traffic Monitor 1: normal NA peak NA 
      Out of profile yellow 0 red 0 
    Traffic Monitor 2: normal NA peak NA 
      Out of profile yellow 0 red 0 
    Traffic Monitor 3: normal NA peak NA 
      Out of profile yellow 0 red 0 
    Traffic Monitor 4: normal NA peak NA 
      Out of profile yellow 0 red 0