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Webcast-Catalyst9k
New Member

IMA problems

I have ATM link but some times this is very Slow and received this message in the log

Oct 30 08:04:34.216: %IMA-1-MAILBOX_FULL: The mailbox for channel 0 on

IMA Network Module

n slot 2 is completely full. Message 0 was dropped.

Oct 30 08:04:34.216: %IMA-1-NO_MAIL_REPLY: Timed out waiting for a

response to command 0x

from slot 2.

Any idea

5 REPLIES
New Member

Re: IMA problems

Can you post your config for both the phyiscal (int ATMx/0, int ATMx/1, etc) and the IMA PVC (int ATMx/IMA0)?

New Member

Re: IMA problems

Sure here you have my configuration

interface ATM2/0

no ip address

no atm auto-configuration

no atm ilmi-keepalive

no atm address-registration

no atm ilmi-enable

ima-group 0

scrambling-payload

impedance 120-ohm

interface ATM2/1

no ip address

no atm auto-configuration

no atm ilmi-keepalive

no atm address-registration

no atm ilmi-enable

ima-group 0

scrambling-payload

impedance 120-ohm

interface ATM2/IMA0

no ip address

no atm auto-configuration

no atm ilmi-keepalive

no atm address-registration

interface ATM2/IMA0.1 point-to-point

bandwidth 1750

backup delay 5 180

backup interface Dialer1

ip address xxx.xxx.xxx.xxx 255.255.255.240

ip pim version 1

ip pim sparse-dense-mode

ip ospf cost 571

no ip mroute-cache

pvc 1/33

vbr-rt 1750 1750

oam-pvc 0

encapsulation aal5snap

service-policy output voip-policy-1750k

interface ATM2/IMA0.2 point-to-point

bandwidth 1750

backup delay 5 180

backup interface Dialer1

ip address xxx.xxx.xxx.xxx 255.255.255.240

ip pim version 1

ip pim sparse-dense-mode

ip ospf cost 571

no ip mroute-cache

pvc 1/33

vbr-rt 1750 1750

oam-pvc 0

encapsulation aal5snap

service-policy output voip-policy-1750k

Re: IMA problems

The following notes might help

Error Message

%IMA-1-MAILBOX_FULL: The mailbox for channel [dec] on IMA Network Module in slot [dec] is completely full. Message [dec] was dropped.

Explanation The IMA network module mailboxes are full and cannot accept any more requests.

Recommended Action Copy the error message exactly as it appears on the console or in the system log, contact your Cisco technical support representative, and provide the representative with the gathered information.

New Member

Re: IMA problems

Hi,

This is a cosmetic bug when you are polling the devices via SNMP management through Cisco View or HP Openview. "MAILBOX" is the protocol used on IMA. You can open a TAC case and get a recommended IOS to fix the bug.

Regards,

Bessie

TAC 800-553-2447

New Member

Re: IMA problems

Well I've had similar problem. On my 3640 IMA card can have only four IMA groups and if you have phisical interface active some kind of internal IMA group is automatically asigned to it. When I shuted down unused phisical interface everything was ok.

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