constant not available everywhere and passing variables from protocols

[Saku Ytti]

My config:

define local_ip              = 129.250.14.127;
define default_candidate_net = 129.250.0.0/16;
define default_candidate_ip  = 129.250.0.0;
define default_net           = 0.0.0.0/0;
include "common.conf";

protocol static {
  route 0.0.0.0/0 recursive default_candidate_ip;
}

# ens192
protocol bgp active from NTT {
  neighbor 204.141.224.0;
}

# ens 224
protocol bgp backup from NTT {
  neighbor 204.141.224.2;
}


1) constant not available everywhere

a) this works
- define default_candidate_ip  = 129.250.0.0;
- route 0.0.0.0/0 recursive default_candidate_ip;

b) this does not
- define default_route = 0.0.0.0/0;
- route default_route recursive 129.250.0.0;

Why not? It barfs with 'line 10: IP address expected'



2) passing variables from protocols

I'm thinking how to tell which neighbour is backup which is primary. My thoughts

a) 'import (backup, bgp_in)
=> no way to define >1 filter?

b) 'bool backup = true'
=> no way to set variables in protocols

c) 'define backup = true'
=> no way to set constants in protocols

d) ''import bgp_in(true)'
=> no way to pass variables to filters

I resorted to matching to protocol name, and call the backup group
backup. But I'd really prefer way to give neighbour or protocol some
information I can use in filter to discriminate.





Are constants considered strings? If so, should the strings have some
methods, like split, sub, []? I bit needlessly need to define
129.250.0.0 and 129.250.0.0/16 as one is used as static route next-hop
another is used as filter to permit prefix. I could just maybe say
'default_candidate_net.split('/')[0]'.



-- 
  ++ytti