The MPLS WG Archive

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

Curtis,

> John,
> 
> This makes no sense at all.  In the ICMP part of LSP Ping, there is no
> load on the egress CPU because the forwarding card ASICs handle ICMP.
> There is a one for one relationship between the number of packets any
> ingress sends and the number it receives (minus any loss) so if an LSR
> CPU is loaded too heavily, it can reduce its sending rate (and
> expected reception rate) and reduce its own CPU load.
> 
> If an egress is overloaded with OAM, there may be *NO* errant LSP,
> just too many perfectly fine LSPs each sending just a little too much
> probe traffic.  There are limits to what you can get a microprocessor
> to do in a given amount of time.
> 
> Curtis
>

You are comparing apples to oranges. In this debate you assume that the ICMP pings
are processed in hardware but the CV packets are processed in software ! therefore
you conclude that the egress can't be overloaded with ICMP but it can with CV. Strange
logic!

-Shahram

-Shahram