[j-nsp] rewrite-rules being applied, despite not being configured

[Hangu Jeong]

Hi,

As my experience, if the interface is participated in MPLS, default exp
rewrite rule is applied always.
It is only for exp rewrite not for others, looks like document bug.

Hope this help!

Regards,
Hangu

On Tue, Oct 28, 2008 at 6:39 AM, David Ball <davidtball at gmail.com> wrote:

>   If I'm reading correctly at:
>
>
> http://www.juniper.net/techpubs/software/junos/junos92/swconfig-cos/applying-a-default-rewrite-rule.html#id-11640641
>
>   ...I should have no rewrite rules applied on ge-0/0/0, since "By
> default, rewrite rules are not applied to interfaces.".  I understand
> that default classifiers are applied to interfaces, but no default
> rewrite rules should be.  Unfortunately, I'm seeing a default
> rewrite-rule being applied, despite my not having defined one at [edit
> class-of-service interfaces].
>   Any ideas?  Am I reading something wrong?
>
> Here's my interface...
>
> dball> show configuration interfaces ge-0/0/0
> apply-groups gig-ether;
> description "10Gig to MX960";
> gigether-options {
>    no-auto-negotiation;
> }
> unit 0 {
>    bandwidth 10g;
>    family inet {
>        address 172.16.5.2/30;
>    }
>    family mpls;
> }
>
> Here's some interface stuff, but it's NOT for ge-0/0/0 (and it's not a
> rewrite rule):
>
> dball> show configuration class-of-service interfaces
> ge-7/0/1 {
>    unit 100 {
>        classifiers {
>            ieee-802.1 default-cust-8021p-trusted;
>        }
>    }
> }
>
> Yet, the following seems to indicate that some default rewrite rules
> are being applied to ge-0/0/0:
>
> dball> show class-of-service interface ge-0/0/0
> Physical interface: ge-0/0/0, Index: 151
> Queues supported: 8, Queues in use: 7
>  Scheduler map: <default>, Index: 2
>
>  Logical interface: ge-0/0/0.0, Index: 79
>    Object                  Name                   Type
>  Index
>    Rewrite                 exp-default            exp (mpls-any)
>   29
>    Classifier              exp-default            exp
>  10
>    Classifier              ipprec-compatibility   ip
>   13
>
> And here's the exp-default rewrite rule that it's referring to (which
> I didn't define):
>
> dball> show class-of-service rewrite-rule type exp name exp-default
> Rewrite rule: exp-default, Code point type: exp, Index: 29
>  Forwarding class                    Loss priority       Code point
>  be-low-fc                           low                 000
>  be-low-fc                           high                001
>  scavenger-fc                        low                 010
>  scavenger-fc                        high                011
>  af-low-fc                           low                 100
>  af-low-fc                           high                101
>  af-high-fc                          low                 110
>  af-high-fc                          high                111
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>