You manage an MX Series device which includes the configuration shown in the exhibit. Traffic marked with DSCP 000011 is entering the ge-1/0/4 interface at
102 Mbps. The traffic exits the device on the ge-1/0/5 interface. No other traffic is transiting the router.
In this scenario, what happens to traffic exceeding 100 Mbps?
In the given configuration and the details provided, there is no indication of any rate limiters or policers being applied to the traffic. The configuration only shows the classifiers and forwarding classes, but not the application of any specific rate limiting. Given that traffic marked with DSCP 000011 is assigned to the 'medium-priority' forwarding class and assuming a default scheduler behavior, without the presence of congestion or specific rate-limiting configurations, traffic exceeding 100 Mbps would still be forwarded, utilizing available bandwidth. Thus, the correct conclusion is that traffic exceeding 100 Mbps is forwarded.
After you create a custom classifier you need to apply it to an interface within the class-of-service stanza. Other hand, the interface ge-1/0/5 is Gbps then the traffic is not exceeded normally; I think the information is uncompleted, however if we suppose there is a 100Mbps rate limit then the packets are classified based on the least significant bit of an incoming packet’s CoS field, (1 -> high, 0 -> low), then the traffic exceeding 100Mbps should be dropped.
The information is in question is not full, Interfaces & Scheduler-maps configurations are missing which is available on few other websites. From the schedulers config it shows "transmit-rate percent 10" for "med-pri-shceduler" which applies to ge-1/0/5 on exit interface. Percentage shows 10% of 1GIG interfaces which drops any traffic above 100m on Ge-1/0/5. So I stick with the answer "Dropped"
Nope. "transmit-rate" by itself only **guarantees** a certain amount of bandwidth under **congestion**. The question clearly states that there is NO congestion by the way. Unless you add "rate-limit" parameter, the "transmit-rate" DOES NOT by itself police or discard traffic. So if no "rate-limit" is specified, and given that there is no congestion, all traffic will be forwarded out ge-1/0/5 (and "transmit-rate" in this case does nothing).
One can’t assume a rate limit of 100M, there’s no policer specified. And the question specifically states that no other traffic is transiting the router. So, all traffic should be forwarded (Answer D). See here: https://www.juniper.net/documentation/us/en/software/junos/cos-security-devices/topics/concept/cos-scheduler-default-security-setting.html «By default, each queue can exceed the assigned bandwidth if additional bandwidth is available from other queues.»
Yeah, also agree there is missing some information here.
D is correct. It considering the available information we can assume that the default scheduler is in action and the traffic will be forwarded.