On Mon, Sep 19, 2011 at 10:54:27PM +0200, schielmann@poczta.onet.pl wrote:
Hello,
I have met some difficulties configuring BIRD with multiple routing tables, so I wanted to check if I don't make any simple mistakes - and that is why i am writing.
I am building a system to propagate QoS parameters thru the network. I wanted to implement the EQ-BGP functionality, that is a BGP plus some additional info about the QoS capabilieties of the network. To the BGP Update massages I add special attribute sets, one for each QoS class. And to store the info I need multiple routing tables - that is where the problems started for me.
I tried to add 3 routing tables to the system (class1, class2, class3) - i've modified /etc/iproute2/rt_tables adding 3 entries with numbers 1, 2, 3. Then i've changed bird.conf, adding 3 "kernel protocols". I made it the same way it is writen in insrtructions, adding lines "table class1" "kernel table 1", "table class2" "kernel table2", and "table class3" "kernel table3" for each new instance of the "kernel protocol". But this doesn't work. During startup BIRD shows "Table name expected".
First, table have to be defined in BIRD config using: table abctable; Second, 'kernel table' expect kernel table number (the one you wrote to rt_tables). Third, recent versions of BIRD automatically define symbols from rt_tables (with prefix ipt_), but they are just numeric constants, not real routing tables (they have to be still defined in bird.conf). So, for example, if you add this to /etc/iproute2/rt_tables: 100 mytbl Then you can have this in bird.conf: table abctable; protocol kernel { table abctable; kernel table 100; } or table abctable; protocol kernel { table abctable; kernel table ipt_mytbl; }
think it would be usefull to add a line "define table auxtable"
There should be just 'table auxtable;', expressions starting with 'define ...' are used to define numeric constants, like 'define myas = 65000;' This is mentioned in documentation in section 3.2 global options, but it is not mentioned in section 2 About routing tables, which is probably too brief and should be expanded. -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santiago@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."