From: dara tomar (wish2ie@gmail.com)
Date: Sun Jul 27 2008 - 12:29:23 ART
*This is related to the IOS ,
Seems to be due to a CEF bug with PPP Dialer interface.
CSCsi00143:
Symptom:
Router running any PPP derived encap so PPP/MLP encaps when running with
Fast/Cef switching will punt traffic
to process.
Conditions:
Router running the 12.4(13.5)T release with any PPP/MLP encap type with
Fast/CEF switching enabled punts the
switched traffic process. Passes on previous release 12.4(13.2)T
Workaround:
None at this time
Thanks,
Dara*
On Sun, Jul 27, 2008 at 5:50 PM, Marko Milivojevic <markom@markom.info>wrote:
> I was never able to make this work properly. I even believe someone
> posted an IOS bug ID on the mailing list here few months back.
>
> I could have bad memory...
>
> --
> Marko
> CCIE #18427
>
>
> On Sun, Jul 27, 2008 at 11:15, ahmed mahmoud <ahmadforever@gmail.com>
> wrote:
> > Good day Everyone.
> >
> > I faced a problem while solving one of the CCIE senarios, Where I had an
> > Inter-AS case using the MP-EBGP neighborship between the ASBRs , while
> the
> > connection between the ASBRs was PPPOE... the problem is the following.
> >
> > The accepting side of the PPPOE connection (The virtual template ) is
> > perfect as the BGP updates are coming with the labels and the labels are
> > injected into the LFIB as below
> >
> > ======================================================================
> > Rack1R6#sh ip b v a 10.1.7.0
> > BGP routing table entry for 1000:1:10.1.7.0/24, version 23
> > Paths: (1 available, best #1, no table)
> > Advertised to non peer-group peers:
> > 24.1.3.3
> > 200
> > 24.1.56.5 from 24.1.56.5 (24.1.5.5)
> > Origin incomplete, localpref 100, valid, external, best
> > Extended Community: RT:200:2 OSPF DOMAIN ID:0x0005:0x000000010200
> OSPF
> > RT:0.0.0.0:2:0 OSPF ROUTER ID:10.1.47.4:512,
> > mpls labels in/out *27/30*
> >
> > Rack1R6#sh mpls forwarding-table
> > *27 30* 1000:1:10.1.7.0/24 \
> >
> >
> =====================================================================================
> >
> >
> > while on the dialing side of the PPPOE (Dialer Interface) the BGP updates
> > are coming with the labels but the LFIB is not populated and the
> > forwarding fails as below
> >
> > ========================================================================
> > Rack1R5#sh ip b v a 10.1.8.0
> > BGP routing table entry for 1000:1:10.1.8.0/24, version 33
> > Paths: (1 available, best #1, no table)
> > Flag: 0x820
> > Advertised to update-groups:
> > 2
> > 100
> > 24.1.56.6 from 24.1.56.6 (24.1.6.6)
> > Origin incomplete, localpref 100, valid, external, best
> > Extended Community: RT:100:1 OSPF DOMAIN ID:0x0005:0x000000010200
> > OSPF RT:0.0.0.0:2:0 OSPF ROUTER ID:10.1.28.2:512,
> > mpls labels in/out *34/25*
> > Rack1R5#sh mpls for
> > Rack1R5#sh mpls forwarding-table
> > Local Outgoing Prefix Bytes tag Outgoing Next Hop
> > tag tag or VC or Tunnel Id switched interface
> > 16 Pop tag 24.1.4.4/32 0 Fa0/0 24.1.45.4
> > 17 20 24.1.1.1/32 0 Fa0/0 24.1.45.4
> > 18 18 24.1.9.9/32 0 Fa0/0 24.1.45.4
> > 19 Pop tag 24.1.14.0/29 0 Fa0/0 24.1.45.4
> > 20 17 24.1.19.0/24 0 Fa0/0 24.1.45.4
> > 21 Untagged 24.1.56.6/32 0 Vi1 point2point
> > 29 23 1000:1:192.10.1.0/24 \
> > 0 Fa0/0 24.1.45.4
> > 30 16 1000:1:10.1.7.0/24 \
> > 18526 Fa0/0 24.1.45.4
> > 31 21 1000:1:10.1.47.0/24 \
> > 0 Fa0/0 24.1.45.4
> > 32 22 1000:1:51.51.51.51/32 \
> > 0 Fa0/0 24.1.45.4
> > 33 20 1000:1:10.1.18.0/24 \
> > 0 Fa0/0 24.1.45.4
> > Rack1R5#
> > ====================================================================
> >
> >
> > Please advise !!!
>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Mon Aug 04 2008 - 06:11:57 ART