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Community Member

ATM IMA problem on 7200

Hi I have 7200 router. this is output of sh ver

Cisco Internetwork Operating System Software

IOS (tm) 7200 Software (C7200-IS-M), Version 12.2(6c)M1, RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac

Copyright (c) 1986-2002 by cisco Systems, Inc.

Compiled Fri 15-Mar-02 05:15 by pwade

Image text-base: 0x600089C0, data-base: 0x61390000

ROM: System Bootstrap, Version 12.1(20000710:044039) [nlaw-121E_npeb 117], DEVEL

OPMENT SOFTWARE

BOOTLDR: 7200 Software (C7200-KBOOT-M), Version 12.1(8a)E, EARLY DEPLOYMENT RELE

ASE SOFTWARE (fc1)

Router uptime is 4 weeks, 3 days, 8 hours, 20 minutes

System returned to ROM by reload at 08:31:23 UTC Fri May 9 2003

System image file is "disk0:c7200-is-mz.122-6c.M1.bin"

cisco 7204VXR (NPE225) processor (revision A) with 114688K/16384K bytes of memor

y.

Processor board ID 23653927

R527x CPU at 262Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache

4 slot VXR midplane, Version 2.1

Last reset from power-on

Bridging software.

X.25 software, Version 3.0.0.

2 FastEthernet/IEEE 802.3 interface(s)

10 ATM network interface(s)

125K bytes of non-volatile configuration memory.

46976K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).

8192K bytes of Flash internal SIMM (Sector size 256K).

Configuration register is 0x2102

I have running 3640 with ATM IMA and everything is working ok. I must replace it with 7200, but when I try to move ATM IMA links to 7200, link is down with IMA status insufucient links.

Any ideas? Does anyone have sample config for ATM IMA on 7200

Thanks!

7 REPLIES
Cisco Employee

Re: ATM IMA problem on 7200

first of all, make sure that all physical parameters (Framing, linecode, scrambling, ...) are correct on the 7200 ATM interfaces. What is the status of the ATM interfaces on the 7200 ? What is that 7200 connected to ?

Community Member

Re: ATM IMA problem on 7200

1. I do not know to what 7200 is conneted at provider side but following config is ok on my 3640, same physical lines

interface ATM2/6

no ip address

no ip mroute-cache

no atm ilmi-keepalive

ima-group 1

scrambling-payload

impedance 120-ohm

!

interface ATM2/7

no ip address

no ip mroute-cache

no atm ilmi-keepalive

ima-group 1

scrambling-payload

impedance 120-ohm

!

interface ATM2/IMA1

bandwidth 2048

ip address x.x.x.x x.x.x.x

no atm oversubscribe

no atm ilmi-keepalive

pvc line x/x

protocol ip x.x.x.x broadcast

ubr 2048

encapsulation aal5snap

!

ima clock-mode common 7

!

2. When I do following config on 7200

interface ATM1/6

no ip address

scrambling cell-payload

framing crc4adm

ima-group 1

!

interface ATM1/7

no ip address

scrambling cell-payload

framing crc4adm

ima-group 1

!

interface ATM1/ima1.1 point-to-point

bandwidth 2048

ip address 10.199.2.1 255.255.255.252

pvc line x/x

protocol ip x.x.x.x

ubr 2000

oam-pvc manage 0

encapsulation aal5snap

!

!

I get following status on ima group

Router#sh ima int atm1/ima1

ATM1/ima1 is down

ImaGroupState: NearEnd = startUp, FarEnd = insufficientLinks

ImaGroupFailureStatus = insufficientLinksFe

IMA Group Current Configuration:

ImaGroupMinNumTxLinks = 1 ImaGroupMinNumRxLinks = 1

ImaGroupDiffDelayMax = 190 ImaGroupNeTxClkMode = common(ctc)

ImaGroupFrameLength = 128 ImaTestProcStatus = disabled

ImaGroupTestLink = 6 ImaGroupTestPattern = 0xFF

IMA Link Information:

Link Link Status Test Status

------ ---------------------------- --------------

ATM1/6 down disabled

ATM1/7 down disabled

Note that I cannot write ubr 2048 on pvc and that interfaces atm1/6 and atm1/7 looks ok if they are not in ima group, but after putting them in ima group I get following status

Router#sh int atm1/6

ATM1/6 is down, line protocol is down

Hardware is IMA PA

MTU 4470 bytes, BW 1920 Kbit, DLY 100 usec,

reliability 0/255, txload 1/255, rxload 1/255

Encapsulation UNKNOWN, loopback not set

Encapsulation(s): AAL5

511 maximum active VCs, 0 current VCCs

VC idle disconnect time: 300 seconds

2 carrier transitions

Last input never, output never, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: Per VC Queueing

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

0 packets input, 0 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 packets output, 0 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 output buffer failures, 0 output buffers swapped out

Community Member

Re: ATM IMA problem on 7200

... and also i get following message durin router boot

%PA-2-UNDEFPA: Undefined Port Adaptor type 187 in bay 1

%PA-3-DEACTIVATED: port adapter in bay [1] powered off.

bay 1 is a bay with ATM card

Community Member

Re: ATM IMA problem on 7200

Hi,

A couple of things, verify with provider, sequence # on the t1's, it matters.

Secondly i did not see the ima group defined, try this

What's your total bandwidth? is it 2 E1's

interface ATM1/6

no ip address

scrambling cell-payload

framing crc4adm

ima-group 0

!

interface ATM1/7

no ip address

scrambling cell-payload

framing crc4adm

ima-group 0

interface ATM1/IMA0

description *** IMA-GROUP 0 ATM 1/6 1/7-1 2-T1's ***

mtu 1500

bandwidth 2048

no ip address

load-interval 30

no atm auto-configuration

no atm ilmi-keepalive

no atm address-registration

no atm ilmi-enable

interface ATM1/ima0.1 point-to-point

bandwidth 2048

ip address 10.199.2.1 255.255.255.252

pvc line x/x

protocol ip x.x.x.x

ubr 2000

oam-pvc manage 0

encapsulation aal5snap

Good Luck

Kevin

Community Member

Re: ATM IMA problem on 7200

It looks like you have an IMAM version mismatch. 7200 implements IMAM 1.1, but 3640 supports IMAM 1.0. So you need to call your provider and let them know you change to IMAM 1.0, they will probably need to restart the IMAM group in order to renegotiation take place between Router and switch (in some switches IMAM version should be change manually).

Unfortunately this is one part of the problem. In the old times when ATM Forum made the recommendation for IMAM development USA Vendors misinterpreted them. So there are 2 variants of IMAM 1.0 one apply by most of American Vendors and an other by Europeans. The differences are on how TX/RX Link IDs should be assign (you can read more about this at: Cisco Bug CSCdw74417). There are two possibilities to workaround this problem, some switches like Lucent SAX may be configure for any of the two variants. The other one is to connect port 1 of router with port 1 of switch, 2 with 2 and so on.

But in any case you need to call your provider and let them know, if you are unable to reach some one at your provider who understands about IMAM, just tell him to restart de IMAM group.

More info at: http://www.cisco.com/en/US/tech/tk39/tk356/technologies_tech_note09186a008009455b.shtml

Good Luck

Lucas

Community Member

Re: ATM IMA problem on 7200

You need to have an Enterprise IOS to support IMA modules.

Community Member

Re: ATM IMA problem on 7200

... or maybe problem is that on

http://www.cisco.com/en/US/products/hw/modules/ps2033/products_module_installation_guide_chapter09186a0080107335.html#1030921

is written

"The PA-A3-IMA in a Cisco 7200 VXR router requires the NPE-300, 4 MB of SRAM,

and a minimum of 64 MB of DRAM"

and I have NPE-255

možda je to

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