Does Bird accept configuration changes using the command line?
Hi, I have a network of ~ 200 servers with Quagga routers in the network core. I'm evaluating the impact of using the Bird in my routers and I have a question. In Quagga the administrator can change the configuration using a command line. For example, I have a shell script that changes the metric of a route in specific cases. Does Bird allow something similar? Does Bird accept configuration changes using the command line? Thanks -- Thiago Henrique www.adminlinux.com.br
On 22.10.2012 16:04, 3.listas@adminlinux.com.br wrote:
Hi,
Hi Thiago!
I have a network of ~ 200 servers with Quagga routers in the network core. I'm evaluating the impact of using the Bird in my routers and I have a question.
In Quagga the administrator can change the configuration using a command line. For example, I have a shell script that changes the metric of a route in specific cases. Does Bird allow something similar?
Does Bird accept configuration changes using the command line?
Not really. There is currently only one item, that can be changed directly from CLI and that is ROA table. If you want to change configuration in general, you have to amend a configuration file. However do not forget BIRD has a smart reconfiguration, it reconfigures only affected protocols and you can also use "include" statement. So for example all static routes can be in (a) separate configuration file(s), so the reconfiguration can be almost as easy as using CLI directly. Ondrej
Thanks
On 22 Oct 2012, at 17:45, Ondrej Filip wrote:
Not really. There is currently only one item, that can be changed directly from CLI and that is ROA table. If you want to change configuration in general, you have to amend a configuration file. However do not forget BIRD has a smart reconfiguration, it reconfigures only affected protocols and you can also use "include" statement. So for example all static routes can be in (a) separate configuration file(s), so the reconfiguration can be almost as easy as using CLI directly.
Or you could put said routes in a separate kernel routing table, and get bird to redistribute that IIRC. That way no reconfiguring of bird is needed at all. -- Alex Bligh
Thank you Ondrej! In my case, I have two routers in a failover cluster managed by Keepalived. And I need to change the metric of a route when a router acquires resources. Currently in Quagga I configure keepalived to run a script that changes the metric similar to this: In keepalived.conf: ... # Do this when the router becomes (master | backup | fault) notify_master "/usr/local/sbin/keepalive_helper.sh UP" notify_backup "/usr/local/sbin/keepalive_helper.sh DOWN" notify_fault "/usr/local/sbin/keepalive_helper.sh DOWN" ... Script keepalive_helper.sh: #!/bin/bash if [ "$1" = "UP" ]; then METRIC="100" elif [ "$1" = "DOWN" ]; then METRIC="200" fi /usr/bin/vtysh -d bgpd \ -c "configure terminal" \ -c "route-map setmetric permit 10" \ -c "set metric $METRIC" /usr/bin/vtysh -d bgpd \ -c "clear ip bgp * soft out" How could I do this using the Bird? Any suggestions? Thanks -- Thiago Henrique www.adminlinux.com.br On 22-10-2012 14:45, Ondrej Filip wrote:
On 22.10.2012 16:04, 3.listas@adminlinux.com.br wrote:
Hi,
Hi Thiago!
I have a network of ~ 200 servers with Quagga routers in the network core. I'm evaluating the impact of using the Bird in my routers and I have a question.
In Quagga the administrator can change the configuration using a command line. For example, I have a shell script that changes the metric of a route in specific cases. Does Bird allow something similar?
Does Bird accept configuration changes using the command line? Not really. There is currently only one item, that can be changed directly from CLI and that is ROA table. If you want to change configuration in general, you have to amend a configuration file. However do not forget BIRD has a smart reconfiguration, it reconfigures only affected protocols and you can also use "include" statement. So for example all static routes can be in (a) separate configuration file(s), so the reconfiguration can be almost as easy as using CLI directly.
Ondrej
Thanks
On 14 Nov 2012, at 15:00, 3.listas@adminlinux.com.br wrote:
How could I do this using the Bird? Any suggestions?
We simple use perl -p -i -e to change the config file and send bird a signal (or do a birdc reload, I forget which). It's a soft reload so only changes the metric and doesn't lose any sessions etc. -- Alex Bligh
participants (3)
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3.listas＠adminlinux.com.br -
Alex Bligh -
Ondrej Filip