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Community Member

New 2821 router cannot make Frame Relay connection

Hi,

I just replaced an old 2600 series router with a 2821 router. It's a simple WAN config with an Ethernet LAN and a Frame-Relay WAN, but I just cannot get it to work!! The old router had a WIC-1DSU-T1 and the new router has a VWIC-2MFT. The DTE comes up, then the PVC .. but immediately goes down. When I do a debug frame-relay LMI during this process it shows the LMI going out, but no inbound. The basics are clocking line, IETF encapsulation, and LMI type cisco. I have included the pertinent part of the old and new router configs below and I REALLY would like to figure out what I am doing wrong!

Old 2600 router (the WIC is not version 2)

interface Serial0/0

bandwidth 1536

no ip address

encapsulation frame-relay IETF

ip route-cache flow

no ip mroute-cache

logging event subif-link-status

logging event dlci-status-change

service-module t1 timeslots 1-24

frame-relay lmi-type cisco

!

interface Serial0/0.222 multipoint

bandwidth 1536

ip address x.x.x.x 255.255.255.252

ip policy route-map noCOS

frame-relay interface-dlci 222

*

Show service command:

Module type is T1/fractional

Hardware revision is 0.112, Software revision is 20050811-0.3,

Image checksum is 0x80ACD1B3, Protocol revision is 0.1

Receiver has no alarms.

Framing is ESF, Line Code is B8ZS, Current clock source is line,

Fraction has 24 timeslots (64 Kbits/sec each), Net bandwidth is 1536 Kbits/sec.

Last module self-test (done at startup): Passed

Last clearing of alarm counters 19w2d

loss of signal : 12, last occurred 00:16:47

loss of frame : 27, last occurred 00:16:47

AIS alarm : 3, last occurred 19w1d

Remote alarm : 3, last occurred 00:31:14

Module access errors : 0,

Total Data (last 96 15 minute intervals):

289547 Line Code Violations, 5361 Path Code Violations

658 Slip Secs, 2185 Fr Loss Secs, 2048 Line Err Secs, 3 Degraded Mins

6 Errored Secs, 1 Bursty Err Secs, 11 Severely Err Secs, 2174 Unavail Secs

Data in current interval (126 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

*

*

New 2821 router:

controller T1 0/2/1

framing esf

linecode b8zs

channel-group 0 timeslots 24

!

interface Serial0/2/1:0

bandwidth 1536

no ip address

encapsulation frame-relay IETF

ip route-cache flow

no ip mroute-cache

logging event subif-link-status

logging event dlci-status-change

service-module t1 timeslots 1-24

frame-relay lmi-type cisco

!

interface Serial0/2/1.222 multipoint

bandwidth 1536

ip address x.x.x.x 255.255.255.252

ip policy route-map noCOS

frame-relay interface-dlci 222

*

Thanks,

Davce

8 REPLIES
Blue

Re: New 2821 router cannot make Frame Relay connection

Is the physical inetrface "up, up"?

What does the output of a sh frame relay map and sh frame relay pvc show?

Community Member

Re: New 2821 router cannot make Frame Relay connection

It is up up for a few seconds (that's when the DLCI show as being up too)then it goes up/down. So no FR map data is available, and the PVC is inactive.

Dave

Blue

Re: New 2821 router cannot make Frame Relay connection

Strange.

So the problem has nothing to do with frame relay because your physical interface is not staying up either. Your router is creating a layer 2 connection with the TELCO switch and that is whats failing.

Can you swap out the WIC card in the router? Its new, but maybe you have bad hardware, tht wont be the first time Ive seen that.

What about the T1 cable? Is it the same one or did you swap that out, too?

Community Member

Re: New 2821 router cannot make Frame Relay connection

I tried the config on the other serial port and moved the module to another slot, and changed the T1 cable. Nothing - so I have a new vwic2-2mft-t1 being shipped to me tomorrow.

Hall of Fame Super Gold

Re: New 2821 router cannot make Frame Relay connection

That is not a defective HW issue.

Hall of Fame Super Gold

Re: New 2821 router cannot make Frame Relay connection

Configure:

network-clock-participate wic 2

network-clock-select 1 t1 0/2/1

then if still trouble do clear counters, send output of "show controllers t1", "show interface s0/2/1".

Community Member

Re: New 2821 router cannot make Frame Relay connection

Thanks. I will try that. I actually did the first command but not the second.

Dave

Community Member

Re: New 2821 router cannot make Frame Relay connection

Unfortunately it was my bonehead mistake, it should have been channel-group 0 timeslots 1-24, not channel-group 0 timeslots 24. *sigh*

Thanks everyone

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