mpls-linux-general

[mpls-linux-general] command help

[<kis...@wi...>]

Hi,
         In command "ip route add 10.200.19.1/32 via 10.200.19.1 spec_nh =
0x8847 0x2" what do we mean spec_nh=20

When I give command "mpls nhlfe show? i get the following:
 NHLFE entry key 0x00000002 mtu 1496 propagate_ttl
   push gen 11111 set eth0 ipv4 10.200.19.1 (0 bytes, 0 pkts, 0 dropped)
What do mean mtu 1496 propagate_ttl=20

The "ip rote show "gives the following:
   10.200.19.1 via 10.200.19.1 dev eth0 spec_nh 0x8847 0x2
   192.168.2.9/24 dev eth0 scope link
10.200.19.1/24 dev eth0 proto kernel scope link src 10.200.19,.1=20
127.0.0.0/8 dev lo scope link
what do mean scope link?

Also what are the commands to create table? and access the table?
Sorry for disturbing by these questions. As Iam new to these please help =
me.

Regards,
Kishor=20


                         =20

[mpls-linux-general] command help

[<kis...@wi...>]

Hii
=20
=20
I didn't get what do mean scope link in
"
   10.200.19.1 via 10.200.19.1 dev eth0 spec_nh 0x8847 0x2
   192.168.2.9/24 dev eth0 scope link
   10.200.19.1/24 dev eth0 proto kernel scope link src 10.200.19,.1=20
   127.0.0.0/8 dev lo scope link"
=20
One more thing how can I access label table from SNMP agent? =
Specifically are there any functions or commands for this?. Help me
=20
Thanks and Regards,
=20
Kishor
=20

Re: [mpls-linux-general] command help

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

The scope stuff is not mpls-linux specific, read the iproute2 documents
for info about 'scope'.

There is a SF project that implements a SNMP agent for mpls-linux.  Do
a search on the SF site for mpls and it will be one of the matches.

BTW SF =3D=3D sourceforge.net

On Wed, Feb 22, 2006 at 10:24:27AM +0530, kis...@wi... wrote:
> Hii
> =20
> =20
> I didn't get what do mean scope link in
> "
>    10.200.19.1 via 10.200.19.1 dev eth0 spec_nh 0x8847 0x2
>    192.168.2.9/24 dev eth0 scope link
>    10.200.19.1/24 dev eth0 proto kernel scope link src 10.200.19,.1=20
>    127.0.0.0/8 dev lo scope link"
> =20
> One more thing how can I access label table from SNMP agent? Specifically=
 are there any functions or commands for this?. Help me
> =20
> Thanks and Regards,
> =20
> Kishor
> =20

--=20
James R. Leu
jl...@mi...

Re: [mpls-linux-general] command help

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

On Tue, Feb 21, 2006 at 12:45:33PM +0530, kis...@wi... wrote:
> Hi,
>          In command "ip route add 10.200.19.1/32 via 10.200.19.1 spec_nh =
0x8847 0x2" what do we mean spec_nh=20

spec_nh stands for special nexthop.  spec_nh was my first attempt at buildi=
ng
infrastructure for Ipv4|6 to interact with nexthops that had a different
protocol (IPSEC and MPLS are the two I had in mind).  In mpls-linux 1.950
spec_nh has gone away and the 'shim' system has been implemented.

spec_nh 0x8847 0x2 means special nexthop of type MPLS (0x8847 is the ethern=
et
protocol ID for MPLS unicast) and a MPLS NHLFE key of 0x2.

> When I give command "mpls nhlfe show? i get the following:
>  NHLFE entry key 0x00000002 mtu 1496 propagate_ttl
>    push gen 11111 set eth0 ipv4 10.200.19.1 (0 bytes, 0 pkts, 0 dropped)
> What do mean mtu 1496 propagate_ttl=20

MTU is the maximum packet size that can be sent on the NHLFE.  propagate_ttl
means that we copy the TTL from the IPv4|6 header if this node is acting
as a ingress LER.

> The "ip rote show "gives the following:
>    10.200.19.1 via 10.200.19.1 dev eth0 spec_nh 0x8847 0x2
>    192.168.2.9/24 dev eth0 scope link
> 10.200.19.1/24 dev eth0 proto kernel scope link src 10.200.19,.1=20
> 127.0.0.0/8 dev lo scope link
> what do mean scope link?
>=20
> Also what are the commands to create table? and access the table?
> Sorry for disturbing by these questions. As Iam new to these please help =
me.

Your last two questions are not specific to mpls-linux and can easily be
found via google or the like. (hint "lartc")

>=20
> Regards,
> Kishor=20
>=20
>=20
>                          =20

--=20
James R. Leu
jl...@mi...