[c-nsp] ATM pvp, vpi, pvp

[Kim Onnel]

Hello,

For ATM gurus who once operated cell-mode mpls networks:


MGX(RPM)1==== BPX+LSC=====MGX(RPM)2
                               ||
                               ||
                       MGX(RPM)3

The configuration for the XtagATM1 interface on the LSC for RPM1: (P)

interface XTagATM383
 description *** LSC to RPM1***
 bandwidth 33000
 ip unnumbered Loopback0
 ip ospf hello-interval 5
 ip ospf dead-interval 15
 extended-port ATM1/0 bpx 3.8.3
 tag-switching atm cos available 0
 tag-switching atm cos control 0
 tag-switching atm vp-tunnel 3 vci-range 33-65535
 tag-switching ip


And on the RPM1 (PE)


interface Switch1  : equiv. to ATM1
 no ip address
 no ip mroute-cache
 atm pvp 3 33000
 atm pvp 29 2048
 no atm ilmi-keepalive
 no rpm-sar-auto-recovery
 rpm-auto-cbclk-change
!
interface Switch1.1 tag-switching
 bandwidth 33000
 ip unnumbered Loopback0
 ip ospf hello-interval 5
 ip ospf dead-interval 15
 tag-switching atm vp-tunnel 3 vci-range 33-65535
 tag-switching ip
!



On LSC for RPM2:

interface XTagATM166
 description *****LSC to  RPM2*****
 bandwidth 8000
 ip unnumbered Loopback0
 ip ospf hello-interval 5
 ip ospf dead-interval 15
 extended-port ATM1/0 bpx 1.6.6
 tag-switching atm vp-tunnel 6 vci-range 33-65535
 tag-switching ip



and on RPM2:

interface Switch1
 no ip address
 no ip mroute-cache
 atm pvp 6 8000
 atm pvp 18 1024
 no atm ilmi-keepalive
 rpm-auto-cbclk-change
!
interface Switch1.1 tag-switching
 bandwidth 8000
 ip unnumbered Loopback0
 ip accounting output-packets
 ip ospf hello-interval 5
 ip ospf dead-interval 15
 tag-switching atm multi-vc
 tag-switching atm vp-tunnel 6 vci-range 33-65518
 tag-switching ip


On RPM3:

(config)#interface ATM3/0
(config-if)# no ip address

(config-if)#interface ATM3/0.1 tag-switching
(config-subif)# tag-switching atm vpi 240-255
(config-subif)# tag-switching ip


What is the difference between

1) tag-switching atm vpi 240-255
2) tag-switching atm vp-tunnel 6 vci-range 33-65518
3) atm pvp 3 33000