From: sam (sam@avtechusa.com)
Date: Thu Feb 13 2003 - 19:41:37 GMT-3
Hi I did a lab and got a strange result.. couldn't verify on CCO, so I
wanted to verify with you guys
Thanks.
Sam Sena
MY FINDINGS :
If PVC is automatically assigned to an interface(or sub) via the
'ilmi-pvc-discovery subinterface' command,
then it's going to override your SVC configuration settings.
Scenario:
2 Routers, R1-R2 with single LS1010 in between
I have 2 sub-interfaces on R1 ATM0. (configs are posted at bottom)
ATM0.2 is configured to receive PVC automatically via (atm
ilmi-pvc-discovery subinterface)
ATM0.4 has a SVC (ESI and NSAP addresses both given)
Qn : According to show atm pvc
r1#sh atm pvc
Interface Name VPI VCI Type Encaps SC Kbps Kbps
Cells Sts
0 13 0 5 PVC SAAL UBR
155000 UP
0 1 0 16 PVC ILMI UBR
155000 UP
0 23 2 314 PVC-D SNAP UBR 155000
UP
0 24 4 54 PVC-D SNAP UBR 155000
UP
0 25 6 344 PVC-D SNAP UBR 155000
UP
.. there is a pvc with a VCI of 4 (note how I have a subinterface 0.4,
only I have configured SVC on that interface previously)
r1#sh atm svc
Interface Name VPI VCI Type Encaps SC Kbps Kbps
Cells Sts
Note how my SVC does not appear!
Now, when I go to int ATM0 and configure
NO ilmi-pvc-discovery subinterface
I perform a shut-no shut on the interface and when I type 'show atm pvc'
and 'show atm svc'
r1#sh atm p
Interface Name VPI VCI Type Encaps SC Kbps Kbps
Cells Sts
0 13 0 5 PVC SAAL UBR 155000
UP
0 1 0 16 PVC ILMI UBR
155000 UP
r1#sh atm svc
Interface Name VPI VCI Type Encaps SC Kbps Kbps
Cells Sts
0.4 r2r1 0 74 SVC SNAP UBR 155000
UP
************************************** CONFIGS for R1 and R2
************************
R1
interface ATM0
no ip address
pvc 0/16 ilmi
!
pvc 0/5 qsaal
!
no atm ilmi-keepalive
!
interface ATM0.2 point-to-point
ip address 131.1.12.1 255.255.255.0
!
interface ATM0.4 multipoint
ip address 131.1.21.1 255.255.255.0
!
svc r2r1 nsap 47.00918100000000E01E5F4701.333314141414.04
protocol ip 131.1.21.2 broadcast
encapsulation aal5snap
!
atm esi-address 333313131313.04
R2
interface ATM0
ip address 131.1.12.2 255.255.255.0
pvc 0/16 ilmi
!
pvc 0/5 qsaal
!
no atm ilmi-keepalive
!
interface ATM0.2 point-to-point
!
interface ATM0.4 multipoint
ip address 131.1.21.2 255.255.255.0
!
svc r2r1 nsap 47.00918100000000E01E5F4701.333313131313.04
protocol ip 131.1.21.1 broadcast
encapsulation aal5snap
!
atm esi-address 333314141414.04
.
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