Transmit-rate limit in scheduler with VLAN interface

There is an upper limit in the transmit-rate of the scheduler when it is defined under the VLAN interface.

Scheduler cannot be applied to an interface when transmit-rate is above a certain bandwidth.

For example, the customer defines two VLAN interfaces under the reth interface with the scheduler using a 501M transmit-rate:

The following error is printed out in the message file and the scheduler fails to apply to the interface, noting no such error with transmit-rate 500M:

Another example with 10 VLANs defined, the transmit rate of each VLAN can define up to 100M:

In the following error, note that there is no such error if transmit-rate is 100M:

Note: The above test was done on SRX240 running 12.1X44-D45.

Scheduler cannot be applied to an interface when transmit-rate is above a certain bandwidth.

For Branch SRX, if there are two VLANs and the physical interface is 1G bandwidth, then each VLAN’s bandwidth is 500M. This is current behavior. Note that this behavior is not applicable to high-end SRX devices (i.e., SRX 1K/3K/5K) as class of service is done by the hardware, which is different from Branch SRX.

Generally speaking, per-unit-scheduler divides the bandwidth of the Gigabit Ethernet (GE) interface equally based on the number of VLAN interfaces defined.

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Prasanna

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