From: Salau, Yemi (yemi.salau@siemens.com)
Date: Wed Nov 28 2007 - 08:05:12 ART
Hello Experts,
As anyone come across issues where a serial connection (say s0/1) going
down, tend to bring down another serial connection.
The scenario is that, say RouterA has 2 serial interfaces s0/1 and s0/2.
s0/1 is a ppp connection via a V100 satellite link, and s0/2 is a
frame-relay connection with several subinterfaces ... Say
s0/2.1,s0/2.2,s0/2.3,s0/2.4,s0/2.5 etc.
The problem is, whenever s0/1 goes down, it takes s0/2 main interface
down with it, which in turn take down all the sub-interfaces with it.
Is there any reason why this should be, I'm guessing hardware related
fault on the Hub Router, or a software bug ... Anyone come across this,
please let me know.
!
interface Serial0/1
bandwidth 512
ip address A.B.C.D W.X.Y.Z
encapsulation ppp
ip route-cache flow
no fair-queue
no cdp enable
!
!
interface Serial0/2
bandwidth 2048
no ip address
encapsulation frame-relay IETF
ip route-cache flow
no ip route-cache cef
frame-relay traffic-shaping
frame-relay lmi-type ansi
frame-relay interface-queue priority 10 20 30 40
!
interface Serial0/2.1 point-to-point
bandwidth 128
ip address B.B.C.D W.X.Y.Z
no cdp enable
frame-relay interface-dlci 1
class 64k_cir_128k_bc
!
interface Serial0/2.2 point-to-point
bandwidth 128
ip address B.B.C.E W.X.Y.Z
no cdp enable
frame-relay interface-dlci 2
class 64k_cir_128k_bc
!
interface Serial0/2.3 point-to-point
bandwidth 128
ip address B.B.C.F W.X.Y.Z
no cdp enable
frame-relay interface-dlci 3
class 64k_cir_128k_bc
!
!
interface Serial0/2.4 point-to-point
bandwidth 128
ip address B.B.C.G W.X.Y.Z
no cdp enable
frame-relay interface-dlci 4
class 64k_cir_128k_bc
!
interface Serial0/2.5 point-to-point
bandwidth 128
ip address B.B.C.H W.X.Y.Z
shutdown
no cdp enable
frame-relay interface-dlci 5
class 64k_cir_128k_bc
!
interface Serial0/2.6 point-to-point
bandwidth 256
ip address B.B.C.I W.X.Y.Z
no cdp enable
frame-relay interface-dlci 6
class 128k_cir_256k_bc
!
interface Serial0/2.7 point-to-point
bandwidth 128
ip address B.B.C.J W.X.Y.Z no cdp enable
frame-relay de-group 1 7
frame-relay interface-dlci 7 IETF
class 64k_cir_128k_bc_inc_2_voice
vofr data 4 call-control 5
frame-relay payload-compression FRF9 stac
!
interface Serial0/2.8 point-to-point
bandwidth 32
no cdp enable
frame-relay interface-dlci 8
class 56k_cir_7k_bc_2_voice
vofr data 5 call-control 4
!
Many Thanks
Yemi Salau
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