>(for example - what do *you* mean when you say "when I remove the host?
:). In a physical environment, this can mean turning the machine off, or
unplugging its network cable, both of which events aren't easily
>detectable from the network's perspective)
"remove" means unplugging its network cable.
Frist, pls see the file "src/nox/netapps/lavi/lavi_hosts.cc", and it wraps the
jsonmsg with "add/delete", so I think that it should be sent a msg when the
host's removed. But I just get the msg as "{type: lavi, node type: host, node
id: XXX, command: add}" when the host's pinging the switch, and after
unplugging the host's network cable, I can't find a msg including "command:
delete". Is it my misunderstanding, or component's imperfection?
Date: Mon, 5 Dec 2011 23:25:47 -0800
Subject: Re: [nox-dev] Component: hosttracker
From: kyr.zari...@gmail.com
To: switch....@hotmail.com
CC: nox-dev@noxrepo.org
Ah, ok. So I'm not sure exactly how the logic that detects if a host has been
removed is implemented, as I didn't write this component. So I don't know when
the "delete" message is sent for hosts.
I could take a look and get back to you. The logic should be somewhere inside
LAVI/hosttracker, and it might be something along the lines of "if you haven't
heard any traffic from host, remove it, or 'if you hear traffic from host X on
port B, but X is registered on port A, remove it from A".
(for example - what do *you* mean when you say "when I remove the host? :). In
a physical environment, this can mean turning the machine off, or unplugging
its network cable, both of which events aren't easily detectable from the
network's perspective)
On Mon, Dec 5, 2011 at 10:25 PM, ztom <switch....@hotmail.com> wrote:
> when you say the front-end, do you mean noxconsole? the GUI?
GUI, nox-gui.py
> (you
can take a look at the GUI to see how the message exchange happens and
what they messages look like.. the code should be in topology.py)
I know the process of msg exchange,
back-end(jsonmsg)->view_interface(signal/slot)->GUI. But when I remove the
host, nox(with LAVI component) will send a jsonmsg including "node_type: host,
command: delete". Actually, it doesn't, so I'm confused.
Date: Mon, 5 Dec 2011 22:14:47 -0800
Subject: Re: [nox-dev] Component: hosttracker
From: kyr.zari...@gmail.com
To: switch....@hotmail.com
CC: nox-dev@noxrepo.org
when you say the front-end, do you mean noxconsole? the GUI?
(you can take a look at the GUI to see how the message exchange happens and
what they messages look like.. the code should be in topology.py)
On Mon, Dec 5, 2011 at 9:28 PM, ztom <switch....@hotmail.com> wrote:
Hi~ alls,
I found a component named "hosttracker" with source code, and it can handle
adding or removing of hosts.
But when I run it with nox_core($ ./nox_core -v -i ptcp:6633 monitoring
hosttracker), the front-end still can't receive the jsonmsg
as "{'node_type': 'host', 'command':'add/remove'}". What should i do???
---
thanks
tom
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