mpls-linux-general — Mailing list for general discussion about MPLS for Linux

[mpls-linux-general] ldp-portable stupid question

[Dragos, R. <dr...@ee...>]

Hi all,

Is ldp-portable depending on mpls-linux implementation?
If yes, why is it called "portable" ?

The points is: can I use ldp-portable with my own MPLS 4 Linux
implementation?

Thanks,
Radu

[mpls-linux-general] =?gb2312?B?V2hlcmUgaXMgdGhlc2Ugc3RydWN0cz8=?=

[ÕÅΰһ <zh...@16...>]

Hi,All,
  I am reading the Jim's codes now.But I can not find where are the defination of "mpls_out_info_tree" and "mpls_in_info_tree".Anyone can tell me?
  Thanks in advance!

Yours Sincerely

Zhang,Weiyi




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[mpls-linux-general] couln't find structure mpls_ftn,ilm,nhlfe

[anish v. <ani...@re...>]

hi jim,=0D=0A  it was mentioned in the documentation of mpls-linux-1.0 abt =
the structures mpls_nhlfe , mpls_ftn,=0D=0Ailm_ent. but it was not there in=
 the code.=0D=0Awhether they r implemented in some other way.=0D=0Ahelp me.=
=0D=0Athanx in advance=0D=0Aanish=0D=0A        =0D=0A =0A

[mpls-linux-general] couln't find structure mpls_ftn,ilm,nhlfe

[anish v. <ani...@re...>]

hi jim,=0D=0A  it was mentioned in the documentation of mpls-linux-1.0 abt =
the structures mpls_nhlfe , mpls_ftn,=0D=0Ailm_ent. but it was not there in=
 the code.=0D=0Awhether they r implemented in some other way.=0D=0Ahelp me.=
=0D=0Athanx in advance=0D=0Aanish=0D=0A        =0D=0A =0A

Re: [mpls-linux-general] No mpls_* in /proc/net!

[James R. L. <jl...@mi...>]

On Sun, Jan 20, 2002 at 07:56:01PM -0800, lingdong li wrote:
>   can you clarify the order of these commonds?
> if I use FreeBsd,I need not run these commond.Is it?
> Thanks for your patience and help.:) 

cd /usr/include/
mv linux linux.old
mv asm asm.old

(I'm assuming your kernel source is located in
/usr/src/linux)

ln -s /usr/src/linux/include/linux
ln -s /usr/src/linux/include/asm

cd /usr/src/linux/
make menuconfig
make dep 
make vmlinux
make modules
make modules_install
make install
reboot

> 
> Best Regard 
> 
> Li
> --- "James R. Leu" <jl...@mi...> wrote:
> > My guess is that you're using a redhat distribution
> > and that you've never
> > compiled a kernel before.
> > 
> > Use 'make dep vmlinux install'
> > If you configured any modules do 'make modules
> > modules_install'
> > 
> > On Sun, Jan 20, 2002 at 05:13:39AM -0800, lingdong
> > li wrote:
> > > Dear Jim,
> > > 
> > >    I just find there are no mpls.h and dst.h in
> > the
> > > /usr/include/net.But both files are included in
> > > mpls_*.c in usr/src/net/mpls/,is it a problem?
> > 
> > Becuase your using redhat, your
> > /usr/include/linux,asm do not point
> > to your kernel source.
> > 
> > cd /usr/include
> > mv linux linux.old
> > mv asm asm.old
> > 
> > (I'm assuming your kernel source is located in
> > /usr/src/linux)
> > 
> > ln -s /usr/src/linux/include/linux
> > ln -s /usr/src/linux/include/asm
> > 
> > >    I install and compile the mpls-linux-1.0 under
> > the
> > > instruction of QUICK.START.
> > > *************************************
> > >    in the /usr/src,
> > >    tar -zxvf linux-2.5.0.tar.gz
> > >    then 
> > >    tar -zxvf mpls-1.0*.gz
> > >    cd linux
> > >    patch .............
> > >    make menuconfig
> > >    turn on "Prompt for development and/or
> > incomplete
> > > code/drivers","Kernel/User netlink
> > socket","Routing
> > > messages","Multi-Protocol Label Switching",and
> > some
> > > other options.
> > >    make dep
> > >    make clean
> > >    make bzlilo
> > >    reboot
> > > ***********************************
> > >  But I can not find the mpls_* in /proc/net.Is
> > there
> > > wrong in some steps?
> > >  Hoping your help:)
> > >    
> > > Best Wishes
> > > 
> > > Li
> > > 
> > > 
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Send FREE video emails in Yahoo! Mail!
> > > http://promo.yahoo.com/videomail/
> > 
> > -- 
> > James R. Leu
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Send FREE video emails in Yahoo! Mail!
> http://promo.yahoo.com/videomail/

-- 
James R. Leu

Re: [mpls-linux-general] What does the RADIX_* do?

[James R. L. <jl...@mi...>]

On Mon, Jan 21, 2002 at 04:34:44AM -0800, Cheng Zhengchao wrote:
> Hi,All,
> 
>   When I read the codes of mpls*.c in the
> /usr/src/linux/net/mpls,I find I can not catch what
> the RADIX_* do.Can anyone help me to understand

The corect name is a radix trie.  Which is basically a tree (binary or
otherwise) that can support variable length keys.  I wrote the RADIX* macros
when I was studying differnt way to optimize the storage of the internet
routing table.

I use it now because I'm lazy :-) It provides a pretty speedy look up, but I
never fully take advantage of the trie, the keys I store in it are always
32 bits in length.  Someday I'll replace RADIX* with some sort of multilevel
hash.  You don't need to understand RADIX* to understand the MPLS
implementation.  Just think of them as easy ways to save and retireve info
by a 32 bit key.

> it?What do them to do?
>   At the same time,mpls_label2key() is used to get the
> key,but I wonder how can it get the mark?and what is

The structure mpls_key is a union.  If you understand how a union works
it becomes quit evident how I get 'mark' from it.

> the role of key in the RADIX_*?
>  Thanks for your help in advance.
> 
> Yours Sincerely
> Cheng
> 
> __________________________________________________
> Do You Yahoo!?
> Send FREE video emails in Yahoo! Mail!
> http://promo.yahoo.com/videomail/
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

[mpls-linux-general] What does the RADIX_* do?

[Cheng Z. <che...@ya...>]

Hi,All,

  When I read the codes of mpls*.c in the
/usr/src/linux/net/mpls,I find I can not catch what
the RADIX_* do.Can anyone help me to understand
it?What do them to do?
  At the same time,mpls_label2key() is used to get the
key,but I wonder how can it get the mark?and what is
the role of key in the RADIX_*?
 Thanks for your help in advance.

Yours Sincerely
Cheng

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Re: [mpls-linux-general] No mpls_* in /proc/net!

[James R. L. <jl...@mi...>]

On Fri, Jan 18, 2002 at 07:53:26PM -0800, lingdong li wrote:
> Hi,All,
>   I have compiled the mpls-linux-1.0 successfully,and
> I run the commond following the content of
> README.example on 2 pcs.But there is no mpls_* in my
> /proc/net.
>   I want to know why,Please shed me with your
> light.Thank you!

Did you turn on the "Multi-Protocol Label Switching (MPLS)" option
under networking options?

Did you see "MPLS version X.XXX YY/YY/2001 jl...@mi..."
or something like that in you kernel boot up?  You might want to 
read QUICK.START to learn what kernel configuration you should do.

Jim

> Best Regard
> 
> Zhang
> 
> __________________________________________________
> Do You Yahoo!?
> Send FREE video emails in Yahoo! Mail!
> http://promo.yahoo.com/videomail/
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

[mpls-linux-general] No mpls_* in /proc/net!

[lingdong li <lin...@ya...>]

Hi,All,
  I have compiled the mpls-linux-1.0 successfully,and
I run the commond following the content of
README.example on 2 pcs.But there is no mpls_* in my
/proc/net.
  I want to know why,Please shed me with your
light.Thank you!

Best Regard

Zhang

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Re: [mpls-linux-general] Wanna your help!!!

[James R. L. <jl...@mi...>]

Which version of gcc are you using?

Jim

On Fri, Jan 18, 2002 at 10:28:59PM +0800, =D5=C5=CE=B0=D2=BB wrote:
> Hi All,
>   We'r facing some problems in installing, ldp_linux
> We 've successfuly installed "mplsadm" utiliy in /usr/src/mpls-linux-1.=
0/util/
>=20
> 1.
>   The problem is that in dir /usr/local/ldp-portable-0.0.60/ when I giv=
e
> # make
> for some time make runs successfully... but after some time... error is=
 generated :
> rt ; make ldp_linux.o
> make[1]: Entering directory `/usr/src/ldp-portable-0.060/port'
> make[1]: `ldp_linux.o' is up to date.
> make[1]: Leaving directory `/usr/src/ldp-portable-0.060/port'
> cd port ; make libldpport.a
> make[1]: Entering directory `/usr/src/ldp-portable-0.060/port'
> make[1]: `libldpport.a' is up to date.
> make[1]: Leaving directory `/usr/src/ldp-portable-0.060/port'
> cd lib ; make libldp.a
> make[1]: Entering directory `/usr/src/ldp-portable-0.060/lib'
> make[1]: `libldp.a' is up to date.
> make[1]: Leaving directory `/usr/src/ldp-portable-0.060/lib'
> gcc -o ldp_linux port/ldp_linux.o lib/libldp.a port/libldpport.a lib/li=
bldp.a
> collect2: ld terminated with signal 11 [Segmentation fault]
> make: *** [ldp_linux] Error 1
>=20
>=20
>=20
>=20
>=20
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> http://dating.163.com       =B4=BA=CC=EC=BB=A8=BB=E1=BF=AA=A3=AC=C4=D0=BA=
=A2=C5=AE=BA=A2=D2=AA=C1=B5=B0=AE=A1=AB
> http://im.163.com           =CD=F8=D2=D7=B6=CC=D0=C5=CD=A8=A3=BA=C3=E2=B7=
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> http://vip.163.com          =CD=F8=D2=D7VIP=D3=CA=CF=E4 30=C3=EB=C1=A2=B5=
=C3
>=20
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

--=20
James R. Leu

[mpls-linux-general] =?gb2312?B?V2FubmEgeW91ciBoZWxwISEh?=

[ÕÅΰһ <zh...@16...>]

Hi All,
  We'r facing some problems in installing, ldp_linux
We 've successfuly installed "mplsadm" utiliy in /usr/src/mpls-linux-1.0/util/

1.
  The problem is that in dir /usr/local/ldp-portable-0.0.60/ when I give
# make
for some time make runs successfully... but after some time... error is generated :
rt ; make ldp_linux.o
make[1]: Entering directory `/usr/src/ldp-portable-0.060/port'
make[1]: `ldp_linux.o' is up to date.
make[1]: Leaving directory `/usr/src/ldp-portable-0.060/port'
cd port ; make libldpport.a
make[1]: Entering directory `/usr/src/ldp-portable-0.060/port'
make[1]: `libldpport.a' is up to date.
make[1]: Leaving directory `/usr/src/ldp-portable-0.060/port'
cd lib ; make libldp.a
make[1]: Entering directory `/usr/src/ldp-portable-0.060/lib'
make[1]: `libldp.a' is up to date.
make[1]: Leaving directory `/usr/src/ldp-portable-0.060/lib'
gcc -o ldp_linux port/ldp_linux.o lib/libldp.a port/libldpport.a lib/libldp.a
collect2: ld terminated with signal 11 [Segmentation fault]
make: *** [ldp_linux] Error 1





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[mpls-linux-general] RE: How to do it?

[nomit k. <nom...@in...>]

Hello

The mistake which we are doing here is we are mixing a application which
runs in the user area and a feature which has to be incorporated into
the kernel ( that is the support for proc file system).For the proc file
system to be generated you have add the patch to the Linux kernel code
and then compile that code. MPLSADM is something analogous with route
command in Linux it does not implement MPLS forwarding it is the changes
in which we make in the kernel code which does this.

With regards

Nomit


-----Original Message-----
From: zh...@16... [mailto:zh...@16...]
Sent: Thursday, January 17, 2002 5:20 PM
To: mpl...@li...
Cc: mpl...@mp...
Subject: How to do it?


Hi ALL,
 In the README in mpls-linux-1.0\patches,Jim wrote "if you also add
support for the /proc filesystem the result will be four new files in
the /proc/net directory".I have run "mplsadm" successfully.But I do not
find those files in /proc/net.How can I add suppot for /proc filesystem?
 There are mpls_*.c in /usr/src/linux/net/mpls.I do not clear that how
those codes called by mplsadm? (I know using those files we can generate
the mpls.o,but in the Makefile in mpls-linux-1.0/utils,we do not use the
mpls.o) How does the mplsadm implement the MPLS forwarding for the Linux
Kernel?
  I wanna your help,thanks.:)
=20
Yours Sincerely

Zhang Weiyi





=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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=B4=BA=CC=EC=BB=A8=BB=E1=BF=AA=A3=AC=C4=D0=BA=A2=C5=AE=BA=A2=D2=AA=C1=B5=B0=
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Re: [mpls-linux-general] How to do it?

[Abhijit G. <gab...@ee...>]

James R. Leu wrote :

>
>Since the MPLS forwarding plane is in the kernel and 'mplsadm' runs as
>a userland process, their are a few mechanisms availble for transfering
>information between the two:
>- /proc/sys/*
>- system calls ('ioctl' 'fnctl' etc..)
>- netlink
>
>Currently I use a mix of system calls and netlink (although I'm leaning more
>to using less and less netlink).

May I know why this is so? I believe netlink is becoming a pretty standard
way of user-kernel communications. Easily extensible, and right now
perhaps the only mechanism (I know) for seemlessly exchanging data between
user-space and kernel-space. Are there any major factors against using
netlink?


>
>If you look in the patched kernel source you can look at the two files that
>are the entry points for netlink and ioctl calls:  net/mpls/mpls_ioctl.c
>net/mpls/mpls_netlink.c.  Both of these files end up calling functions
>in differnt files (mpls_tunnel.c mpls_in_info.c mpls_out_info.c etc).
>
>Jim

-abhijit

Re: [mpls-linux-general] decoding /proc/net/mpls_in

[James R. L. <jl...@mi...>]

On Thu, Jan 17, 2002 at 03:12:11PM -0800, Sanjeev Chakravarty wrote:
> 
> Hi Jim,
> 
> I would appreciate if you could explain the content of an entry in
> /proc/net/mpls_in
> 
> Eg. on executing "mplsadm -A -I gen:27:0"
> 
> The following entry was found in /proc/net/mpls_in
> 40006C00 0/0/0 gen 27 0 POP PEEK
> 
> What I could infer is: PEEK into the label stack for the top most label of
> the incoming packet and if it is a generic label "27" in labelspace "0" then
> POP that label. I have no idea about the other parameters "40006C00" and
> "0/0/0".

40006C00 is the key that is used to store it in the internal tree.
0/0/0 are teh counters.  Packet/byte/drop.

> Also in one of your previous mail you mentioned that you are less inclined
> towards using netlink. Is it becoz netlink is Linux specific and porting to
> other systems could have problems or there are other issues?

Netlink works well, but it seems like over kill.  If I ever add notification
(like when labels come and go) I will look to netlin again.

Jim

> 
> thanks,
> 
> Sanjeev
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

[mpls-linux-general] decoding /proc/net/mpls_in

[Sanjeev C. <Sa...@co...>]

Hi Jim,

I would appreciate if you could explain the content of an entry in
/proc/net/mpls_in

Eg. on executing "mplsadm -A -I gen:27:0"

The following entry was found in /proc/net/mpls_in
40006C00 0/0/0 gen 27 0 POP PEEK

What I could infer is: PEEK into the label stack for the top most label of
the incoming packet and if it is a generic label "27" in labelspace "0" then
POP that label. I have no idea about the other parameters "40006C00" and
"0/0/0".

Also in one of your previous mail you mentioned that you are less inclined
towards using netlink. Is it becoz netlink is Linux specific and porting to
other systems could have problems or there are other issues?

thanks,

Sanjeev

RE: [mpls-linux-general] How works MPLS-Linux?

[Sanjeev C. <Sa...@co...>]

Hi Dani,

- First of all, is there more documentation about mpls-linux than the
documentation that comes with the package?
> I am not aware of any other documentation for this project other than what
comes with the package. The mailing-list archive would be a useful resource
to get a better understanding. Also, we can hope someday there will be an
MLDP(Mpls for Linux Documentation Project) similar in lines with Linux
Documentation Project. You may refer to http://65.184.3.77/mpls/mpls.html
<http://65.184.3.77/mpls/mpls.html>  for netlink introduction.
 
- mplsadm is the utility to make LSPs between hosts, and it has an option
that prints debug messages, but I'm trying to measure the speed, delays,
etc. so, is there any option in mplsadm that can I use to make it? or Do I
have to make a program or modify mplsadm.c to measure it? Does exists other
methods to measure it? 
> There is no option in mplsadm to measure the throughput/delay or atleast
I'm not aware of. You may transfer (ftp) a file and get the transfer rate
with and without mpls being enabled.
 
- is there any special option in mplsadm to send data packages in order to
see how it works? Do I have to use ping or is there any special command in
mplsadm to do it? 
> mplsadm doesn't generate data packets for testing. You will have to
generate ip packets (eg., using ping, etc)
 
- How can I see the routing tables with the label bindings? Is there any
special file where this info is saved?
> James described this in his last few mails in the mailing-list. Please
look at them.
 
Sorry for this kind of questions but I have just began to use it and I don't
know how it works.
Thanks in advance!
 
Dani 
 
Hope this helps,
Sanjeev. 

[mpls-linux-general] How works MPLS-Linux?

[Daniel G. C. <da...@on...>]

Hi, I have installed mpls-linux 0.996 over the kernel linux 2.4.13 and =
now I'm doing the basic example that is in the docs directory. It is a =
simple connection between two hosts, I'm doing this to learn how =
MPLS-Linux and its utility mplsadm work. I'm not very good with Linux, =
so I will be very pleased if someone can help me. Here are my questions:

(Sorry for my english)

- First of all, is there more documentation about mpls-linux than the =
documentation that comes with the package?

- mplsadm is the utility to make LSPs between hosts, and it has an =
option that prints debug messages, but I'm trying to measure the speed, =
delays, etc. so, is there any option in mplsadm that can I use to make =
it? or Do I have to make a program or modify mplsadm.c to measure it? =
Does exists other methods to measure it?

- is there any special option in mplsadm to send data packages in order =
to see how it works? Do I have to use ping or is there any special =
command in mplsadm to do it?

- How can I see the routing tables with the label bindings? Is there any =
special file where this info is saved?

Sorry for this kind of questions but I have just began to use it and I =
don't know how it works.
Thanks in advance!

Dani

[mpls-linux-general] =?iso-8859-1?Q?About_dsfwd_instruction?=

[=?utf-8?Q?<avi...@li...>]

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Ym91dCwgcXVlc3Rpb25zLi4uDQoNCkNoZWVycywNClN0ZWZhbm8=

Re: [mpls-linux-general] How to do it?

[James R. L. <jl...@mi...>]

Hello,

On Thu, Jan 17, 2002 at 07:49:55PM +0800, =D5=C5=CE=B0=D2=BB wrote:
> Hi ALL,
>  In the README in mpls-linux-1.0\patches,Jim wrote "if you also add sup=
port for the /proc filesystem the result will be four new files in the /p=
roc/net directory".I have run "mplsadm" successfully.But I do not find th=
ose files in /proc/net.How can I add suppot for /proc filesystem?
>  There are mpls_*.c in /usr/src/linux/net/mpls.I do not clear that how =
those codes called by mplsadm? (I know using those files we can generate =
the mpls.o,but in the Makefile in mpls-linux-1.0/utils,we do not use the =
mpls.o) How does the mplsadm implement the MPLS forwarding for the Linux =
Kernel?
>   I wanna your help,thanks.:)

Since the MPLS forwarding plane is in the kernel and 'mplsadm' runs as
a userland process, their are a few mechanisms availble for transfering
information between the two:
- /proc/sys/*
- system calls ('ioctl' 'fnctl' etc..)
- netlink

Currently I use a mix of system calls and netlink (although I'm leaning m=
ore
to using less and less netlink).

If you look in the patched kernel source you can look at the two files th=
at
are the entry points for netlink and ioctl calls:  net/mpls/mpls_ioctl.c
net/mpls/mpls_netlink.c.  Both of these files end up calling functions
in differnt files (mpls_tunnel.c mpls_in_info.c mpls_out_info.c etc).

What all this about /proc?  MPLS for linux uses the proc filesystem as
a way of exposing to the user what is currently configured, they are
read only "files".  The reason I quoted "files" is that they are not file=
s
in the traditional sense.  Everything in the /proc filesystem is actually
a set of virtual files that result in kernel functions being called whenv=
er
they are accessed.  If you look in net/mpls/mpls_proc.c you will see the
functions that produce the output that you see when looking at /proc/net/=
mpls_*

I hope this helps.
Jim

> =20
> Yours Sincerely
>=20
> Zhang Weiyi
>=20
>=20
>=20
>=20
>=20
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> http://dating.163.com       =B4=BA=CC=EC=BB=A8=BB=E1=BF=AA=A3=AC=C4=D0=BA=
=A2=C5=AE=BA=A2=D2=AA=C1=B5=B0=AE=A1=AB
> http://im.163.com           =CD=F8=D2=D7=B6=CC=D0=C5=CD=A8=A3=BA=C3=E2=B7=
=D1=B7=A2=CB=CD=CA=D6=BB=FA=B6=CC=D0=C5=B5=C4=D7=C0=C3=E6=C8=ED=BC=FE
> http://vip.163.com          =CD=F8=D2=D7VIP=D3=CA=CF=E4 30=C3=EB=C1=A2=B5=
=C3
>=20
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

--=20
James R. Leu

[mpls-linux-general] =?gb2312?B?SG93IHRvIGRvIGl0Pw==?=

[ÕÅΰһ <zh...@16...>]

Hi ALL,
 In the README in mpls-linux-1.0\patches,Jim wrote "if you also add support for the /proc filesystem the result will be four new files in the /proc/net directory".I have run "mplsadm" successfully.But I do not find those files in /proc/net.How can I add suppot for /proc filesystem?
 There are mpls_*.c in /usr/src/linux/net/mpls.I do not clear that how those codes called by mplsadm? (I know using those files we can generate the mpls.o,but in the Makefile in mpls-linux-1.0/utils,we do not use the mpls.o) How does the mplsadm implement the MPLS forwarding for the Linux Kernel?
  I wanna your help,thanks.:)
 
Yours Sincerely

Zhang Weiyi





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[mpls-linux-general] =?gb2312?B?U29tZSBxdWVzdGlvbnM=?=

[ÕÅΰһ <zh...@16...>]

Hi,All,
   I just downloaded the ldp-portable-0.060 and mpls-linux-1.0,but I still have several questions about them.Maybe my questions are simple,but I appreciate your help in advance.
   1. Has the mpls-linux-1.0 relationship with ldp-portable-0.060?just in the mpls-linux-1.0,how does it implement the ldp functions?
   2. I heard the redirection of IP packet from IP layer to mpls layer is implemented by the mpls_tunnel.c in the /proc/net,but I want to know how does the  "mplsadm" find it?
   3. I just saw Jim said that /proc/net/mpls_* has information mapping the labels to interfaces.How does "mplsadm" call them?

I know my questions are simple,and my English is poor,but I really need your help.Thanks!

Yours Sincerely

Zhang,Weiyi 




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Re: [mpls-linux-general] Listing of mpls attributes for an interf ace

[James R. L. <jl...@mi...>]

On Wed, Jan 16, 2002 at 11:45:48AM -0800, Sanjeev Chakravarty wrote:
> Hi James,
> 
> I think most of the info I was looking for could be obtained from
> /proc/net/mpls_*.
> 
> I don't have a system running mpls right now to find out but was wondering
> if the information contained in /proc/net/mpls_* has information mapping the
> labels to interfaces. 

Outgoing labels list what interface they are trasmitetd on
Incoming labels list what labelspace they are in.  mpls_labelspace
lists what interfaces are in which labelspaces.

> Also, are attributes like "age" and "exp" bits contained in
> /proc/net/mpls_*?

I do not output the age info. Would this be useful?  EXP bit are displayed
if the instructions for the label contain EXP mappings.

Jim

> thanks,
> 
> Sanjeev
> 
> -----Original Message-----
> From: James R. Leu [mailto:jl...@mi...]
> Sent: Wednesday, January 16, 2002 1:05 PM
> To: Sanjeev Chakravarty
> Cc: mpl...@li...
> Subject: Re: [mpls-linux-general] Listing of mpls attributes for an
> interface
> 
> 
> On Wed, Jan 16, 2002 at 11:00:08AM -0800, Sanjeev Chakravarty wrote:
> > Hi,
> > 
> > It appears to me that "mplsadm" doesn't provide any options of listing
> mpls
> > attributes for an interface. Is there an api in mpls package that would
> help
> > me obtain this info?
> 
> I'm not sure what attributes you are refering too.
> 
> Does the info under /proc/net/mpls_* provide what you are looking for?
> 
> > thanks,
> > 
> > Sanjeev 
> > 
> > _______________________________________________
> > mpls-linux-general mailing list
> > mpl...@li...
> > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general
> 
> -- 
> James R. Leu

-- 
James R. Leu

RE: [mpls-linux-general] Listing of mpls attributes for an interf ace

[Sanjeev C. <Sa...@co...>]

Hi James,

I think most of the info I was looking for could be obtained from
/proc/net/mpls_*.

I don't have a system running mpls right now to find out but was wondering
if the information contained in /proc/net/mpls_* has information mapping the
labels to interfaces. 

Also, are attributes like "age" and "exp" bits contained in
/proc/net/mpls_*?

thanks,

Sanjeev

-----Original Message-----
From: James R. Leu [mailto:jl...@mi...]
Sent: Wednesday, January 16, 2002 1:05 PM
To: Sanjeev Chakravarty
Cc: mpl...@li...
Subject: Re: [mpls-linux-general] Listing of mpls attributes for an
interface


On Wed, Jan 16, 2002 at 11:00:08AM -0800, Sanjeev Chakravarty wrote:
> Hi,
> 
> It appears to me that "mplsadm" doesn't provide any options of listing
mpls
> attributes for an interface. Is there an api in mpls package that would
help
> me obtain this info?

I'm not sure what attributes you are refering too.

Does the info under /proc/net/mpls_* provide what you are looking for?

> thanks,
> 
> Sanjeev 
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

Re: [mpls-linux-general] Listing of mpls attributes for an interface

[James R. L. <jl...@mi...>]

On Wed, Jan 16, 2002 at 11:00:08AM -0800, Sanjeev Chakravarty wrote:
> Hi,
> 
> It appears to me that "mplsadm" doesn't provide any options of listing mpls
> attributes for an interface. Is there an api in mpls package that would help
> me obtain this info?

I'm not sure what attributes you are refering too.

Does the info under /proc/net/mpls_* provide what you are looking for?

> thanks,
> 
> Sanjeev 
> 
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general

-- 
James R. Leu

[mpls-linux-general] Listing of mpls attributes for an interface

[Sanjeev C. <Sa...@co...>]

Hi,

It appears to me that "mplsadm" doesn't provide any options of listing mpls
attributes for an interface. Is there an api in mpls package that would help
me obtain this info?

thanks,

Sanjeev