Input and Output Queues 2960-X

[elreymedina]

How many ingress and egress queues are there per port on the Cisco 2960-X switches?

[Reza Sharifi]

see table-2 in this link:

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/qos/configuration_guide/b_qos_152ex_2960-x_cg/b_qos_152ex_2960-x_cg_chapter_011.html

HTH

[elreymedina]

Thanks Reza

Table 2 list 4 output/egress queues. But no mention of ingress queue/s

Below shows the output of a 'sh interface' of a particular port

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)

1. Based on the above output can I safely assume that there is 1 input/ingress queue? 

2. Why is the size of both input and output queue 0?

3. For the output queue, is the max of 40 a reflection of all four queues?

4. Why is the Queuing strategy saying fifo even though auto-qos has been enabled on the link?

[Reza Sharifi]

Hi,

It seems that the only way you can configure ingress queues on the 2960-x series switches is by using auto-qos.  See table-2 in this link:

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-2_2_e/consolidated_guide/configuration_guide/b_1522e_consolidated_2960x_cg/b_consolidated_152ex_2960-X_cg_chapter_011100.pdf

[elreymedina]

Thanks for your response Reza, but based on the link below, ingress queuing and scheduling is not supported on the 2960-x switches. See note under section "Actions at Ingress Port" 

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/qos/configuration_guide/b_qos_152ex_2960-x_cg/b_qos_152ex_2960-x_cg_chapter_010.html

With respect to egress queuing, there are four (4) outbound queues.