I had a Router 7513 with ATM`s PortAdapter on VIP 6-80
Router 7513
NAME: "Line Card 12", DESCR: "Versatile Interface Processor (VIP6-80)"
PID: VIP6-80 , VID: Hardware Version : 2.03, Board Revision : B0, SN: 33021650
NAME: "Card Slot 12, Bay 0", DESCR: "ATM WAN OC3 MM Port Adaptor"
PID: PA-A3-OC3-MM , VID: Hardware Version : 2.0, Board Revision : A0, SN: 24489952
NAME: "Card Slot 12, Bay 1", DESCR: "ATM WAN OC3 MM Port Adaptor"
PID: PA-A3-OC3-MM , VID: Hardware Version : 2.0, Board Revision : A0, SN: JAE08512HQ0
With this configuration:
interface ATM12/0/0
description Red Wan ATM PDVSA
mtu 9188 ---->>>>>>> (((MTU 9188)))
bandwidth 155000
no ip address
ip access-group SNMP in
logging event atm pvc state
logging event subif-link-status
load-interval 30
no atm ilmi-keepalive
cdp enable
!
interface ATM12/0/0.38 point-to-point
description Enlace PLC-Intevep
bandwidth 10642
ip address 200.1.147.14 255.255.255.252
ip bandwidth-percent eigrp 4944 5
pvc 0/38
vbr-nrt 10642 10642
oam-pvc manage
encapsulation aal5snap
transmit-priority 3
max-reserved-bandwidth 95
!
This router recently has a problem with other VIP on Slot0 and the enterprises Management's people request for us to change the links over ATM interfaces on Slot12 to a Router 7613 with
Router 7613
NAME: "3", DESCR: "WS-X6582-2PA 2 port adapter Enhanced FlexWAN Rev. 2.3"
PID: WS-X6582-2PA , VID: V07, SN: JAE102761NB
NAME: "module in bay 0, slot 3", DESCR: "ATM WAN OC3 MM Port Adaptor"
PID: PA-A6-OC3-MM , VID: , SN: JAE10296WW9
NAME: "module in bay 1, slot 3", DESCR: "ATM WAN OC3 MM Port Adaptor"
PID: PA-A6-OC3-MM , VID: , SN: JAE103185C6
We try to stay the same configuration but EIGRP adjacency was flapping; the messages "retry limit exceeded" of EIGRP Neigbors Logs
interface ATM3/0/0
description Red Wan ATM PDVSA
mtu 9188 ---->>>>>>> (((MTU 9188)))
bandwidth 155000
no ip address
ip access-group SNMP in
logging event atm pvc state
logging event subif-link-status
load-interval 30
no atm ilmi-keepalive
cdp enable
!
interface ATM3/0/0.38 point-to-point
description Enlace PLC-Intevep
bandwidth 10642
ip address 200.1.147.14 255.255.255.252
ip bandwidth-percent eigrp 4944 5
pvc 0/38
vbr-nrt 10642 10642
oam-pvc manage
encapsulation aal5snap
transmit-priority 3
max-reserved-bandwidth 95
!
When I delete all configuration for ATM interfaces (default int ATM 3/0/0; no int ATM3/0/0.38) and configure without MTU 9188 command everything work well.
Why is the reason? The other side don`t need to change anything...! I change the FIBER patch coord and the link work on 7513 with ATM MTU Interface of 9188.
