vMX

There is a "jncie-cos" scheduler map applied to all interfaces (ge-*). After applying rewrite rules to some interface, scheduler map on this interface shown as "<default>". After deleting the rewrite rules scheduler map changes back to "jncie-cos". Please advise if it is a bug or a feature.

Console output and config are in the attachment. The config is from QoS lab of JNCIE-SP-12.a bootcamp. vMX version is 17.4R1.16

Attachment(s)

QoS lab.txt   2 KB 1 version

I have seen similar behaviour on SRX and other junos platforms

My conclusion was: the wildcards in COS like  ge-* only works when you do not set any other special QOS item on that interface. else specify the scheduler map on that interface again or only use interface specs and no wildcards in COS

regards

alexander

Hello,

This is how JUNOS regex works. It picks the most specific regex to apply, not all matching regex.

Instead of

interfaces {
    ge-* {
        scheduler-map jncie-cos;
    }
    ge-0/0/2 {
        unit 0 {
            rewrite-rules {
                dscp jncie-rw;
            }
        }
    }
}

please use

interfaces {
    ge-* {
        scheduler-map jncie-cos;
    }
    ge-0/0/2 {
	scheduler-map jncie-cos;
        unit 0 {
            rewrite-rules {
                dscp jncie-rw;
            }
        }
    }
}

- and You should be golden.

HTH

Thx

Alex