[j-nsp] Selective packet mode & local traffic

Wayne Tucker wayne at tuckerlabs.com
Mon Aug 13 22:12:45 EDT 2012

On Fri, Aug 10, 2012 at 11:49 AM, Phil Mayers <p.mayers at imperial.ac.uk> wrote:
> Unless I'm missing a trick, apply-paths in a prefix list pulls the netmask in when applied to interface ips. This is ok for lo0 filters, but not those on transit interfaces.

Good point.  I remember seeing something about that but I don't
remember the context so I'm not sure whether it was a warning or a

It could use some cleanup, but something like this should work:

put the following in /var/db/scripts/commit/local-addresses.slax

version 1.0;

ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";

import "../import/junos.xsl";

match configuration {
    var $top = .;
    for-each (policy-options/prefix-list/apply-macro[name =
'local-addresses']) {
        var $prefix-list-name = ../name;
        for-each ($top/interfaces/interface/unit/family/inet/address) {
            var $address = substring-before(name, "/");
            <transient-change> {
                <policy-options> {
                    <prefix-list> {
                        <name> $prefix-list-name;
                        <prefix-list-item> {
                            <name> $address _ "/32";

set system scripts commit allow-transients
set system scripts commit file local-addresses.slax
set policy-options prefix-list local-addresses apply-macro local-addresses



More information about the juniper-nsp mailing list