Got a question on traffic shaping. Have a couple high speed frame pipes
going into data center/server farm locations. Speeds are 9.264MBPS at
datacenter, 6.176MBPS going into primary server farm, and 4.632MBPS going
into a less-used server location.
Remote sites are running from 128K to 1.544Meg. I have been playing with
traffic shaping a bit, and need to make 2 settings. One is for times with no
congestion, the second entry is for times with congestion. All sites are
running zeroK CIR (okay, not my call, but need to support it).
I was thinking for the first stab at it, to make peak speed equal to the
port speed of the remote location, and average speed equal to average prime
shift utilization of the PVC group (look at all 1544 ports, average out
utilization - then set average to this rate).
* enable traffic shaping, use BECN (Carrier does not use ForeSight)
int hssi8/0/0
frame-relay adaptive-shaping becn
*
* make the map classes
*set PEAK at port speed of remote site
*set AVERAGE at prime shift average utilization at remote site?
map-class frame-relay 1544K_Port
frame-relay traffic-rate average 1544000
* ^
* |
*average out prime shift usage for 1.544 ports
*
map-class frame-relay 768K_Port
frame-relay traffic-rate average 768000
* ^
* |
*average out prime shift usage for 768KB ports
*
map-class frame-relay 512K_Port
frame-relay traffic-rate average 512000
* ^
* |
*average out prime shift usage for 512KB ports
*
map-class frame-relay 256K_Port
frame-relay traffic-rate average 256000
*
map-class frame-relay 128K_Port
frame-relay traffic-rate average 128000
*
* Apply Traffic-shaping map classes to subinterfaces
int hssi8/0/0.101
class 1544K_Port
*
int hssi8/0/0.173
class 512K_Port
*
int hssi8/0/0.202
class 256K_Port
*
end
Any thoughts (other than buy CIR) - maybe set average to a percentage of
peak? I don't want to get into custom queue lists and priority queuing just
yet. Would need to maybe break out a sniffer and get a look at traffic then
work with customer on defining priorities.
Bruce
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http://www.groupstudy.com/form/read.php?f=7i=7137t=7137
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