The math for burst rate is a little odd. However it seems to average at around 10% of the desired rate. The burstiness (for lack of a better word) provides for a better user experience rather than a hard policer.
Will O'Brien On Oct 3, 2012, at 9:55 PM, "GIULIANO (WZTECH)" <[email protected]> wrote: > People, > > Some topics where questioned today about how to limit traffic for vlan > subscribers using MX5 routers. > > The main question is related to system architecture related to the main gear > (internal machine) to control and limiting packets. > > Using policers (input or output) or shaping-rate we have quite the same > result: miscalculating or error. > > If we create a rule like the following: > > > set class-of-service interfaces ge-0/0/1 unit 530 shaping-rate 20m > > > The output traffic rates 19.2~ Mbps only (using MRTG and SNMP statistics and > graphics). > > We ever needs to allocate more bandwidth for the subscriber like. > > set class-of-service interfaces ge-0/0/1 unit 530 shaping-rate 22m > > To get the correct result ... > > Using policers generate almost the same result for output traffic. > > Is this because of system architecture or this is a graphic's mistake ? > > The burst size limit influence this result ? It must be calculated using what > kind of parameter ? > > For example (same physical interface, same MTU, etc): > > Interface ge-0/0/0 unit 10 - VLAN 10 - 30 Mbps What is the correct burst ? > > Interface ge-0/0/0 unit 20 - VLAN 20 - 50 Mbps What is the correct burst ? > > Interface ge-0/0/0 unit 30 - VLAN 30 - 150 Mbps What is the correct burst ? > > Interface ge-0/0/0 unit 30 - VLAN 30 - 4 Mbps What is the correct burst ? > > Does anyone has solved this problems ? > > Is it possible to get a correct parameter and points to a correct limit for > the contracted bandwidth ? > > Thanks a lot, > > Giuliano > > > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
