Troubleshooting CoS Schedulers on a 40-port SFP+ Line Card in an EX8200 Switch
This topic provides troubleshooting information for specific problems related to class-of-service (CoS) schedulers on a 40-port SFP+ line card in an EX8200 Switch.
- The default scheduler map associated with a few ports in a port group is replaced with a configured scheduler map
- The scheduler maps configured on a few ports in a port group are replaced with the default scheduler map
The default scheduler map associated with a few ports in a port group is replaced with a configured scheduler map
Problem
The default scheduler map associated with a few ports in a port group in a 40-port SFP+ line card in an EX8200 switch is replaced with a configured scheduler map.
Cause
The ports in a 40-port SFP+ line card are divided into eight groups, each group comprising five ports. The ports in a port group share 10 gigabits of bandwidth. Because the port groups share bandwidth, CoS ingress and egress queues are handled differently on the 40-port SFP+ line card than on other line cards for EX8200 switches. Only one scheduler map can be active at a time in a port group.
In a port group, if you install transceivers in a port on which you have configured a scheduler map and in a port associated with the default scheduler map, the scheduler maps on all ports in that port group are replaced with the scheduler map you configured. For example, if you configure scheduler map M1 on port 0 and install transceivers in that port and in any other port in port group 0 (see Figure 1), the scheduler maps on all ports in that port group are replaced with the scheduler map M1.
Figure 1: Port Numbering and Port Groups on a 40-port SFP+ Line Card
Solution
Associate all the ports in the port group with the same scheduler map. See Defining CoS Schedulers (CLI Procedure).
The scheduler maps configured on a few ports in a port group are replaced with the default scheduler map
Problem
The scheduler maps configured on a few ports in a port group in a 40-port SFP+ line card in an EX8200 switch are replaced with the default scheduler map.
Cause
The ports in a 40-port SFP+ line card are divided into eight groups, each group comprising five ports. The ports in a port group share 10 gigabits of bandwidth. Because the port groups share bandwidth, CoS ingress and egress queues are handled differently on the 40-port SFP+ line card than on other line cards for EX8200 switches. Only one scheduler map can be active at a time in a port group.
In a port group, if you install transceivers in ports on which you have configured different scheduler maps, the scheduler maps on all ports in that port group are replaced with the default scheduler map. For example, if you configure scheduler map M1 on port 0 and scheduler map M2 on port 2 and install transceivers in both the ports, the scheduler maps on all ports in port group 0 (see Figure 1) are replaced with the default scheduler map.
Solution
Associate all the ports in the port group with the same scheduler map. See Defining CoS Schedulers (CLI Procedure).
