[j-nsp] BGP path selection criteria per vrf ?
Hi Group, I was just wondering if the path selection criteria really can be different between vrf's on the same router. The doccumentation does state that each routing instance can have it's own bgp path selection configuration. But is this also true if the routing instance is a vrf ? Kind Regards, Peter Krüpl ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
Re: [j-nsp] bgp path
As a newcomer to JUNOS I'm stumbling a little on the policy
configurations (in particular for prepending.) This really seems to
spell it out better than the Juniper reference.
One question- The 'then accept;' statement after term 2 ... is it
necessary? If so, what is it doing that wouldn't happen if it was gone?
Thanks,
danno
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Umar Ahmed
Sent: Thursday, January 03, 2008 10:06 AM
To: Erol KAHRAMAN; juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] bgp path
An example :
policy-statement prepend {
term 1 {
from protocol aggregate;
then {
as-path-prepend 1234 1234 1234;
accept;
}
}
term 2 {
then reject;
}
then accept;
}
In this case im matching an aggregate route, then apply this policy
outbound on your peer :
bgp {
log-updown;
group Peer-1 {
type external;
export prepend;
neighbor x.x.x.x
peer-as 123456;
}
}
Any questions, give me a shout.
regards,
Umar Ahmed
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Erol KAHRAMAN
Sent: 03 January 2008 13:41
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] bgp path
Hi guys,
How can i show one path more far with bgp. I need to repead my AS in my
advertisement for this.
--
Erol KAHRAMAN
System Network Administrator
___
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Re: [j-nsp] bgp path
Pardon me. The original poster was discussing an 'export' policy so
the 'all import policies imply an accept' rule doesn't apply
necessarily. However, he's using BGP, whose export policy does use
'accept' as a default.
David
On 04/01/2008, David Ball [EMAIL PROTECTED] wrote:
Hi Dan. The default action depends on whether it's an import or
export policy, and on what protocol is being used. For all import
policies, the default is to 'accept', so the 'then accept' isn't
really needed, but personally I like to see it for my own sanity. See
the following link for a list of protocols and their defaults if
you're interested in a particular combination:
http://www.juniper.net/techpubs/software/junos/junos85/swconfig85-policy/id-10157558.html#id-10157558
David
On 04/01/2008, Dan Farrell [EMAIL PROTECTED] wrote:
As a newcomer to JUNOS I'm stumbling a little on the policy
configurations (in particular for prepending.) This really seems to
spell it out better than the Juniper reference.
One question- The 'then accept;' statement after term 2 ... is it
necessary? If so, what is it doing that wouldn't happen if it was gone?
Thanks,
danno
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Umar Ahmed
Sent: Thursday, January 03, 2008 10:06 AM
To: Erol KAHRAMAN; juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] bgp path
An example :
policy-statement prepend {
term 1 {
from protocol aggregate;
then {
as-path-prepend 1234 1234 1234;
accept;
}
}
term 2 {
then reject;
}
then accept;
}
In this case im matching an aggregate route, then apply this policy
outbound on your peer :
bgp {
log-updown;
group Peer-1 {
type external;
export prepend;
neighbor x.x.x.x
peer-as 123456;
}
}
Any questions, give me a shout.
regards,
Umar Ahmed
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Erol KAHRAMAN
Sent: 03 January 2008 13:41
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] bgp path
Hi guys,
How can i show one path more far with bgp. I need to repead my AS in my
advertisement for this.
--
Erol KAHRAMAN
System Network Administrator
___
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp
**
Any opinions expressed in the e-mail are those of the individual and not
necessarily the company. This e-mail and any files transmitted with it
are confidential and solely for the use of the intended recipient. If
you are not the intended recipient or the person responsible for
delivering it to the intended recipient, be advised that you have
received this e-mail in error and that any dissemination, distribution,
copying or use is strictly prohibited.
If you have received this e-mail in error, or if you are concerned with
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[EMAIL PROTECTED]
The contents of an attachment to this e-mail may contain software
viruses which could damage your own computer system. Whilst the sender
has taken every reasonable precaution to minimise this risk, we can not
accept liability for any damage which you sustain as a result of
software viruses. You should carry out your own virus checks before
opening this e-mail or any attachments to this e-mail.
This e-mail was sent from Vanco UK Limited a company registered in
England under number 2296733 and whose registered office is Units 12,
Great West Plaza, Riverbank Way, Brentford, TW8 9RE, UK
Please consider the environment before printing this e-mail.
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Re: [j-nsp] bgp path
Sorry yet again I seem to be lacking my brain - what I meant to say was
in the example I posted I had a reject statement at the end so that I
would only be exporting any of my aggregate routes with the prepend.
This was a copy of one of my policies just to illustrate the prepend.
Sorry for any confusion, its late in the Uk and my brain has decided to
divide by zero :)
regards,
Umar Ahmed
JNCIE-M # 281, JNCIP # 434, FNCNE
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Umar Ahmed
Sent: 04 January 2008 23:56
To: Dan Farrell; juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] bgp path
Hi Dan - sorry that was me being a total muppet ;) This was an error as
I was copying pasting between policies to hide my IP address details
etc... You are absolutely correct the then accept at the end is not
needed because default BGP policy is to accept all other routes (learnt
via bgp only of course)
regards,
Umar Ahmed
JNCIE-M # 281, JNCIP # 434, FNCNE
-Original Message-
From: Dan Farrell [mailto:[EMAIL PROTECTED]
Sent: 04 January 2008 17:06
To: Umar Ahmed; juniper-nsp@puck.nether.net
Subject: RE: [j-nsp] bgp path
As a newcomer to JUNOS I'm stumbling a little on the policy
configurations (in particular for prepending.) This really seems to
spell it out better than the Juniper reference.
One question- The 'then accept;' statement after term 2 ... is it
necessary? If so, what is it doing that wouldn't happen if it was gone?
Thanks,
danno
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Umar Ahmed
Sent: Thursday, January 03, 2008 10:06 AM
To: Erol KAHRAMAN; juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] bgp path
An example :
policy-statement prepend {
term 1 {
from protocol aggregate;
then {
as-path-prepend 1234 1234 1234;
accept;
}
}
term 2 {
then reject;
}
then accept;
}
In this case im matching an aggregate route, then apply this policy
outbound on your peer :
bgp {
log-updown;
group Peer-1 {
type external;
export prepend;
neighbor x.x.x.x
peer-as 123456;
}
}
Any questions, give me a shout.
regards,
Umar Ahmed
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Erol KAHRAMAN
Sent: 03 January 2008 13:41
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] bgp path
Hi guys,
How can i show one path more far with bgp. I need to repead my AS in my
advertisement for this.
--
Erol KAHRAMAN
System Network Administrator
___
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp
**
Any opinions expressed in the e-mail are those of the individual and not
necessarily the company. This e-mail and any files transmitted with it
are confidential and solely for the use of the intended recipient. If
you are not the intended recipient or the person responsible for
delivering it to the intended recipient, be advised that you have
received this e-mail in error and that any dissemination, distribution,
copying or use is strictly prohibited.
If you have received this e-mail in error, or if you are concerned with
the content of this e-mail please e-mail to:
[EMAIL PROTECTED]
The contents of an attachment to this e-mail may contain software
viruses which could damage your own computer system. Whilst the sender
has taken every reasonable precaution to minimise this risk, we can not
accept liability for any damage which you sustain as a result of
software viruses. You should carry out your own virus checks before
opening this e-mail or any attachments to this e-mail.
This e-mail was sent from Vanco UK Limited a company registered in
England under number 2296733 and whose registered office is Units 12,
Great West Plaza, Riverbank Way, Brentford, TW8 9RE, UK
Please consider the environment before printing this e-mail.
**
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Any opinions expressed in the e-mail are those of the individual and not
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are confidential and solely for the use of the intended recipient. If
you are not the intended recipient or the person responsible for
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[EMAIL
Re: [j-nsp] bgp path
Hi Dan - sorry that was me being a total muppet ;) This was an error as
I was copying pasting between policies to hide my IP address details
etc... You are absolutely correct the then accept at the end is not
needed because default BGP policy is to accept all other routes (learnt
via bgp only of course)
regards,
Umar Ahmed
JNCIE-M # 281, JNCIP # 434, FNCNE
-Original Message-
From: Dan Farrell [mailto:[EMAIL PROTECTED]
Sent: 04 January 2008 17:06
To: Umar Ahmed; juniper-nsp@puck.nether.net
Subject: RE: [j-nsp] bgp path
As a newcomer to JUNOS I'm stumbling a little on the policy
configurations (in particular for prepending.) This really seems to
spell it out better than the Juniper reference.
One question- The 'then accept;' statement after term 2 ... is it
necessary? If so, what is it doing that wouldn't happen if it was gone?
Thanks,
danno
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Umar Ahmed
Sent: Thursday, January 03, 2008 10:06 AM
To: Erol KAHRAMAN; juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] bgp path
An example :
policy-statement prepend {
term 1 {
from protocol aggregate;
then {
as-path-prepend 1234 1234 1234;
accept;
}
}
term 2 {
then reject;
}
then accept;
}
In this case im matching an aggregate route, then apply this policy
outbound on your peer :
bgp {
log-updown;
group Peer-1 {
type external;
export prepend;
neighbor x.x.x.x
peer-as 123456;
}
}
Any questions, give me a shout.
regards,
Umar Ahmed
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Erol KAHRAMAN
Sent: 03 January 2008 13:41
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] bgp path
Hi guys,
How can i show one path more far with bgp. I need to repead my AS in my
advertisement for this.
--
Erol KAHRAMAN
System Network Administrator
___
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp
**
Any opinions expressed in the e-mail are those of the individual and not
necessarily the company. This e-mail and any files transmitted with it
are confidential and solely for the use of the intended recipient. If
you are not the intended recipient or the person responsible for
delivering it to the intended recipient, be advised that you have
received this e-mail in error and that any dissemination, distribution,
copying or use is strictly prohibited.
If you have received this e-mail in error, or if you are concerned with
the content of this e-mail please e-mail to:
[EMAIL PROTECTED]
The contents of an attachment to this e-mail may contain software
viruses which could damage your own computer system. Whilst the sender
has taken every reasonable precaution to minimise this risk, we can not
accept liability for any damage which you sustain as a result of
software viruses. You should carry out your own virus checks before
opening this e-mail or any attachments to this e-mail.
This e-mail was sent from Vanco UK Limited a company registered in
England under number 2296733 and whose registered office is Units 12,
Great West Plaza, Riverbank Way, Brentford, TW8 9RE, UK
Please consider the environment before printing this e-mail.
**
___
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https://puck.nether.net/mailman/listinfo/juniper-nsp
**
Any opinions expressed in the e-mail are those of the individual and not
necessarily the company. This e-mail and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering it to the
intended recipient, be advised that you have received this e-mail in error and
that any dissemination, distribution, copying or use is strictly prohibited.
If you have received this e-mail in error, or if you are concerned with the
content of this e-mail please e-mail to: [EMAIL PROTECTED]
The contents of an attachment to this e-mail may contain software viruses which
could damage your own computer system. Whilst the sender has taken every
reasonable precaution to minimise this risk, we can not accept liability for
any damage which you sustain as a result of software viruses. You should carry
out your own virus checks before opening this e-mail or any attachments to this
e-mail.
This e-mail was sent from Vanco UK Limited a company registered in England
under number 2296733 and whose registered office is Units 12, Great West
Plaza, Riverbank Way, Brentford, TW8 9RE, UK
Please consider
[j-nsp] bgp path
Hi guys, How can i show one path more far with bgp. I need to repead my AS in my advertisement for this. -- Erol KAHRAMAN System Network Administrator ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
Re: [j-nsp] bgp path
An example :
policy-statement prepend {
term 1 {
from protocol aggregate;
then {
as-path-prepend 1234 1234 1234;
accept;
}
}
term 2 {
then reject;
}
then accept;
}
In this case im matching an aggregate route, then apply this policy
outbound on your peer :
bgp {
log-updown;
group Peer-1 {
type external;
export prepend;
neighbor x.x.x.x
peer-as 123456;
}
}
Any questions, give me a shout.
regards,
Umar Ahmed
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Erol KAHRAMAN
Sent: 03 January 2008 13:41
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] bgp path
Hi guys,
How can i show one path more far with bgp. I need to repead my AS in my
advertisement for this.
--
Erol KAHRAMAN
System Network Administrator
___
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp
**
Any opinions expressed in the e-mail are those of the individual and not
necessarily the company. This e-mail and any files transmitted with it are
confidential and solely for the use of the intended recipient. If you are not
the intended recipient or the person responsible for delivering it to the
intended recipient, be advised that you have received this e-mail in error and
that any dissemination, distribution, copying or use is strictly prohibited.
If you have received this e-mail in error, or if you are concerned with the
content of this e-mail please e-mail to: [EMAIL PROTECTED]
The contents of an attachment to this e-mail may contain software viruses which
could damage your own computer system. Whilst the sender has taken every
reasonable precaution to minimise this risk, we can not accept liability for
any damage which you sustain as a result of software viruses. You should carry
out your own virus checks before opening this e-mail or any attachments to this
e-mail.
This e-mail was sent from Vanco UK Limited a company registered in England
under number 2296733 and whose registered office is Units 12, Great West
Plaza, Riverbank Way, Brentford, TW8 9RE, UK
Please consider the environment before printing this e-mail.
**
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