From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Apr 23 2004 - 10:14:31 GMT-3
Yasser,
Thanks again.
I've got to say that for something which is conceptually so simple, Cisco's
implimentation seems rather complicated, don't you think?
As an example of your point, I could configure this:
int s0
ip addr x.x.x.x m.m.m.m
snmp-server host y.y.y.y public
Here, the host at y.y.y.y would receive link-status traps because, by
default, that's enabled. But, if I didn't want the snmp mgr to get snmp
link status traps, I would need to configure the following:
int bri 0
no snmp trap link-status
snmp-server host y.y.y.y public
So, therefore, in the lab, if I'm instructed to send ONLY, for example,
envmon traps to a host at address z.z.z.z and the rtr has 3 active
interfaces, this is what I should configure:
int bri 0
no snmp trap link-status
int s0
no snmp trap link-status
int e0
no snmp trap link-status
snmp-server host z.z.z.z public envmon < ---- SENDS envmon trap to host
snmp-server enable traps < ---- ENABLES ALL TRAPS
Does this look correct?
I think I've got it now.
Thanks, Tim
----- Original Message -----
From: "Yasser Abdullah" <yasser@alharbitelecom.com>
To: "'ccie2be'" <ccie2be@nyc.rr.com>; "'Tim Last'" <packtmon@yahoo.com>;
"'Group Study'" <ccielab@groupstudy.com>
Sent: Friday, April 23, 2004 8:39 AM
Subject: RE: Specifying SNMP Traps
> Yes. There is only a an exception to point 1:
>
> The 'snmp-server enable traps' is not required for traps which are sent
> using a different command. For example the 'SNMP trap link-status'
> interface command would send traps to specified hosts even if the
> 'snmp-server enable traps' command is not configured.
>
> Brgds,
>
> Yasser
>
> -----Original Message-----
> From: ccie2be [mailto:ccie2be@nyc.rr.com]
> Sent: Friday, April 23, 2004 3:26 PM
> To: Yasser Abdullah; 'Tim Last'; 'Group Study'
> Subject: Re: Specifying SNMP Traps
>
> Ah, Yasser, that was the missing piece of info.
>
> Thank you, man.
>
> I bet you must work with snmp at your job, right?
>
> Now, one last variation I'd like to ask you about. Suppose this were
> the
> config:
>
> snmp-server host 10.10.10.10 public config bgp tty
> snmp-server enable traps
>
> According to the Doc's, if no type of trap is specified, then, by
> default,
> all traps can be sent, correct?
> But, since the snmp-server host specified 3 particular traps, only those
> traps are sent to only that host.
>
> Then to summerize how these commands work:
>
> 1) To send traps both the snmp-server host command and the snmp-server
> enable trap MUST BE SPECIFIED.
>
> 2) If specific traps are listed in the snmp-server host command, that
> host
> will get only the traps specified in that command
>
> 3) If specific traps are specified in the snmp-server enable trap
> command,
> those traps will be sent to all hosts specified in all snmp-server hosts
> commands which DON'T have specific traps listed. For example,
>
> snmp-server host 11.11.11.11 public
> snmp-server host 10.10.10.10 public config bgp tty
> snmp-server enable traps hsrp
>
> Here, host 11.11.11.11 will get the hsrp trap because it didn't specify
> any
> traps and
> host 10.10.10.10 wil get the config bgp and tty traps because those are
> the
> traps its specified.
>
> Do you this right?
>
> Thanks, Tim
>
>
> ----- Original Message -----
> From: "Yasser Abdullah" <yasser@alharbitelecom.com>
> To: "'ccie2be'" <ccie2be@nyc.rr.com>; "'Tim Last'" <packtmon@yahoo.com>;
> "'Group Study'" <ccielab@groupstudy.com>
> Sent: Friday, April 23, 2004 7:35 AM
> Subject: RE: Specifying SNMP Traps
>
>
> > Yes, it is actually a term used to describe traps or informs.
> >
> > No, the type of traps doesn't need to be specified twice, at least not
> > all. In your example, bgp, config and tty were specified in the host
> > command. However, this command alone doesn't automatically send traps.
> > You need to activate the sending of traps by issuing the snmp-server
> > enable traps at least for one of the traps types.
> >
> > In the example below, you could have done with only one snmp-server
> > enable traps commands.
> >
> > snmp-server host 10.10.10.10 public config bgp tty
> > snmp-server enable traps config
> >
> > In this case, all hosts will get the config traps, but only host
> > 10.10.10.10 will get the bgp and tty traps.
> >
> > Brgds,
> >
> > Yasser
> >
> >
> > -----Original Message-----
> > From: ccie2be [mailto:ccie2be@nyc.rr.com]
> > Sent: Friday, April 23, 2004 2:12 PM
> > To: Yasser Abdullah; 'Tim Last'; 'Group Study'
> > Subject: Re: Specifying SNMP Traps
> >
> > Yasser,
> >
> > Thanks for getting back to me.
> >
> > I'm still a bit confused.
> >
> > What's the difference between a "Notification" and a "Trap"?
> >
> > Aren't they the different names for the same thing?
> >
> > Also, does the type of trap have to be specified twice,
> >
> > once in the snmp-server host command and
> >
> > again, in the snmp-server enable trap command?
> >
> > It's confusing because in the example below, both BGP and CONFIG were
> > specified twice,
> >
> > but TTY was only specified once - in the snmp-server host command.
> >
> > Why is TTY only specified once but BGP and CONFIG is specified twice?
> >
> > It doesn't make sense to me.
> >
> > Thanks in advance, Tim
> > ----- Original Message -----
> > From: "Yasser Abdullah" <yasser@alharbitelecom.com>
> > To: "'Tim Last'" <packtmon@yahoo.com>; "'Group Study'"
> > <ccielab@groupstudy.com>
> > Sent: Friday, April 23, 2004 4:51 AM
> > Subject: RE: Specifying SNMP Traps
> >
> >
> > > The first command would specify the recipient of the traps and the
> > type
> > > or traps to be sent. However, no traps will be sent for any of the
> > > notifications above until you configure the' snmp-server enable
> traps'
> > > for at least one notification type.
> > >
> > >
> >
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/
> > > ffun_r/ffrprt3/frf014.htm#1113568
> > >
> > > HTH,
> > >
> > > Yasser
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of
> > > Tim Last
> > > Sent: Friday, April 23, 2004 12:26 AM
> > > To: Group Study
> > > Subject: Specifying SNMP Traps
> > >
> > > Hi guys,
> > >
> > > I found this example here:
> > >
> > >
> >
> http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a
> > > 0080094a05.shtml
> > >
> > > snmp-server host 10.10.10.10 public config bgp tty snmp-server
> enable
> > > traps config snmp-server enable traps bgp
> > >
> > > I understand why the 1st first command is there, but why are the
> other
> > 2
> > >
> > >
> > > commands needed? Isn't it enough that that both "config" and "bgp"
> in
> > > the 1st command?
> > >
> > > Or, is it really necessary to specify "config" and "bgp" twice,
> once
> > >
> > > in the 1st command and again in the enable traps command.
> > >
> > >
> > >
> > > Thanks in advance, Tim
> > >
> > >
> > >
> > > ---------------------------------
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> > > Yahoo! Photos: High-quality 4x6 digital prints for 25"
> > >
> > >
> >
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