The SUP of the 7600 has two CPU. Basically one for the L3 activities (RP CPU) and one for L2 activities (SP CPU).
Without L3 interface, broadcast are not punted and flooded in hardware. There are special cases where some specific broadcast packets may be punted to the SP CPU (we are only L2 here) like if it's an IGMP packets and IGMP snooping is enabled.
So a storm of such packets could overload the CPU.
Introduction: The "external-out enable" command is available for
configuration under the "router ospf process" in case of the IOS-XR
operating system. This command basically enables advertisement of
intra-area routes on the device as external routes in th...
IntroductionIn this article we'll discuss how to troubleshoot packet
loss in the asr9000 and specifically understanding the NP drop counters,
what they mean and what you can do to mitigate them. This document will
be an ongoing effort to improve troublesh...