cisco 2921 - Router

[SC856]

llo, 

I am looking for assistance with an issue that is causing downtime to site, any help would be much appreciated!

We had a previous configuration for a layer 2 10 mbps circuit between sites which worked

A END London 3850 switch 

B END London 2921 router

Previous workig Configuration for the 10mbps circuit 

A END - 

interface GigabitEthernet1/0/10

description WAN (Remote Branch) R1.CF Gi0/0 Chesterfield Virgin 10Mb/s #CAL0065214 (via X-Connect Acc14 Gi3/39)

switchport trunk allowed vlan 410,411,414

switchport mode trunk

bandwidth 10000

no cdp enable

B END - 

interface GigabitEthernet0/0

description WAN BCR1.GR Gi2/18 | Goswell Rd DC VMB 10Mb/s ID:CAL0065214

mtu 9000

no ip address

duplex full

speed 10

rj45-auto-detect-polarity disable   

 no cdp enable

service-policy output PM-QOS-WAN

We have ordered an upgraded 100mbps circuit and cutover to this new circuit last week using same config on interfaces at both ends,  but we have been advised to set full duplex and speed 100 at both ends of link, which has been done.  Our equipment at both ends shows up and up between us and the provider equipment.  We cannot however pass traffic between both ends since cutover.  The provider had a couple of issues, but now tell us an end to end test has passed.

Our new port config is thus:-

 A End

!

interface GigabitEthernet1/0/11

description ***NEW COGENT CIRCUIT via VM  *** CHESTERFIELD 100Mb/s (VM Ref:CAL0353583)

switchport trunk allowed vlan 410,411,414

switchport mode trunk

bandwidth 100000

speed 100

duplex full

no cdp enable

B END

interface GigabitEthernet0/0

description WAN BCR1.GR Gi2/18 | Goswell Road London

mtu 9000

no ip address

duplex full

speed 100

no cdp enable

service-policy output PM-QOS-WAN

end

I can see that there is a rj45-auto-detect-polarity disable, which I cannot reapply to the B end 2921 router.  Would this have any bearing on the issue. 

Any help in understanding why this new 100 mbps circuit will not come up is gratefully received.

Thankyou

Stephanie 

[balaji.bandi]

can you post from each device to look. ( what you see in the logs ?)

show interface GigabitEthernet1/0/11

show interface GigabitEthernet0/0

show cdp neigh

[SC856]

Hello, Many thanks for your reply and assistance.............................
Here are the configs. I have been advised that the provider can see our mac addresses passing to their equipment from our interfaces at each end.
Interface Gi0/11 - A END
GigabitEthernet1/0/11 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 046c.9d19.ea8b (bia 046c.9d19.ea8b)
Description: ***NEW COGENT CIRCUIT via VM *** CHESTERFIELD 100Mb/s (VM Ref:CAL0353583)
MTU 9000 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 100Mb/s, link type is auto, media type is 10/100/1000BaseTX SFP
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
120547 packets input, 20789847 bytes, 0 no buffer
Received 14519 broadcasts (10103 multicasts)
0 runts, 0 giants, 0 throttles
2 input errors, 2 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 10103 multicast, 0 pause input
0 input packets with dribble condition detected
578802 packets output, 51823608 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
Interface GI0/0 - B end
R1.CF#sh int gi0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is 30e4.db61.fd80 (bia 30e4.db61.fd80)
Description: WAN BCR1.GR Gi2/18 | Goswell Road London
MTU 9000 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., loopback not set
Keepalive set (10 sec)
Full Duplex, 100Mbps, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:01, 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: Class-based queueing
Output queue: 0/1000/0 (size/max total/drops)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
2759 packets input, 369706 bytes, 0 no buffer
Received 2759 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2759 multicast, 0 pause input
9942 packets output, 913006 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
1 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out



R1.XX#sh cdp neigh
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW01.CF.ngl.local
Gig 0/1 132 S I WS-C3560- Gig 0/1
LOGS - A END (19:48 onwards - whilst 3rd party was testing link) - no change made by customer.
Jan 28 19:46:36: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/11, changed state to down
Jan 28 19:46:42: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/11, changed state to up
Ja Jan 28 19:48:18: %SCHED-3-THRASHING: Process thrashing on watched message queue 'dummy watched message'. -Process= "SSH Process", ipl= 0, pid= 381
-Traceback= 1#19dd566ae97d577bb5e23d73f636d995 :54DE5000+27FA014 :54DE5000+477A960 :54DE5000+477D050 :54DE5000+12FB810 :54DE5000+12FB9F0 :54DE5000+12FBAF4 :54DE5000+12FBCE0 :54DE5000+13679A0 :54DE5000+1367BC0 :54DE5000+136B268 :54DE5000+26F80D8
NOTE:- This error was only logged once, no other log errors since Jan 28th.
LOGS - B END (gi0/0) - note for logs :- This router is primary router for HSRP. The Backup router is operating as active over DSL currently (bad link), as primary cannot see link.
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Sun 27-Mar-11 07:36 by prod_rel_team
*Feb 1 12:03:00: %SSH-5-ENABLED: SSH 2.0 has been enabled
*Feb 1 12:03:00: %SNMP-5-COLDSTART: SNMP agent on host R1.CF is undergoing a cold start
*Feb 1 12:03:01: %SYS-6-BOOTTIME: Time taken to reboot after reload = 98 seconds
*Feb 1 12:03:01: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to down
*Feb 1 12:03:01: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 10.64.1.112 port 514 started - CLI initiated
*Feb 1 12:03:02: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to up
*Feb 1 12:03:04: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to down
*Feb 1 12:03:08: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to up
*Feb 1 12:03:09: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up
*Feb 1 12:03:36: %HSRP-5-STATECHANGE: GigabitEthernet0/1.30 Grp 2 state Standby -> Active
*Feb 1 12:03:37: %HSRP-5-STATECHANGE: GigabitEthernet0/1.20 Grp 1 state Standby -> Active
*Feb 1 12:03:37: %HSRP-5-STATECHANGE: GigabitEthernet0/1.40 Grp 1 state Standby -> Active
*Feb 1 12:03:38: %HSRP-5-STATECHANGE: GigabitEthernet0/1.40 Grp 1 state Active -> Speak
*Feb 1 12:03:38: %HSRP-5-STATECHANGE: GigabitEthernet0/1.20 Grp 1 state Active -> Speak
*Feb 1 12:03:39: %HSRP-5-STATECHANGE: GigabitEthernet0/1.30 Grp 2 state Active -> Speak
*Feb 1 12:03:49: %HSRP-5-STATECHANGE: GigabitEthernet0/1.20 Grp 1 state Speak -> Standby
*Feb 1 12:03:50: %HSRP-5-STATECHANGE: GigabitEthernet0/1.40 Grp 1 state Speak -> Standby
*Feb 1 12:03:50: %HSRP-5-STATECHANGE: GigabitEthernet0/1.30 Grp 2 state Speak -> Standby

ease type your reply above this line -##

Many thanks for your time.

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[Richard Burts]

The A 3850 clearly has configured a trunk carrying 3 non default vlans. We have not seen anything on the B 2921 that shows processing of 3 vlans. So it is hard to know if there is some issue about this.

Based on the very limited information available so far my best guess about the issue is that the original 10 mbps circuit was configured by the provider to handle tagged frame. I am guessing that the new 100 mbps circuit is not configured to handle tagged frames. Can you check with the provider about this?

[SC856]

Hello
Thankyou.
I will revert to provider to check this, this has I believe been mentioned by our 3rd party provider, but there relationship is then with the carrier., and some confusion/miscommunication arises.
Stephanie.

[balaji.bandi]

Orginal post you mentioned :

A END London 3850 switch

B END London 2921 router

as per CDP neighbour it show as below :   ( I have good experience with Providers around UK, some time they connect to different company routers or devices )- so i want to clarify is this correct ? if this L2 Circuits you should see your device not others )

R1.XX#sh cdp neigh
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW01.CF.ngl.local
Gig 0/1 132 S I WS-C3560- Gig 0/1  ( Device and port information also not correct)

[SC856]

Hello,
CDP Neighbor only shows our LAN switch on Gi0/1 which is correct.

[balaji.bandi]

thanks for the clarifiation.  Do you have high level diagram, how these connected. ?

[SC856]

See diagram attached , I hope this helps.

To clarify, we have decided to go with a new single provider for all our circuits.  This is the first circuit that we are attempting to cutover from our old provider to an upgraded circuit via our new our 3rd party provider which then goes via Virgin Media to our equipment at the remote end.

The remote site was previously connected to a 10 mbps circuit with VM direct. The text in blue on the diagram, shows what the setting was previously when the circuit worked.

[balaji.bandi]

thank you for the input, so before the provider, VM direct with 10MB worked, but 100MB is with a new provider is not working, using the same infrastructure.

if the new provider uses the same facilities and the same network, is there any change in the path of the MPLS network?

is this Layer 2 Circuit?

If this is Layer 2, quick test connect both the Side Laptops give IP address p2p and see if that works? before further going to investigate to save your time.

[Georg Pauwen]

Hello,

as far as I recall, the 'rj45-auto-detect-polarity disable' interface command is very old and for 10Mbps links only. It is not even available for higher speed links, so I wouldn't worry about that.

Are the interfaces up/down, or down/down ?

Try the interface command 'mdix auto'.

[SC856]

Thanks for your reply.... I did respond earlier, but it didnt get through first time

 I suspected the rj45-auto-detect statement might only apply to 10Mbs as there was only one article I could find for that  statement  and it referred to a 10mb circuit.

Between our equipment and  provider supplied equipment at both ends of this link , Each interface is  up >>> Line protocol is up 

thankyou for your help

[Georg Pauwen]

Hello,

I agree with Richard, if you have a switch trunk terminated on a router, typically there are dot1q subinterfaces. So I wonder how the old circuit worked. 

Either way, the mtu on both interfaces is set to 9000, you could try and set that to 1500.

What service/connection do you have from Cogent, what do they call it ?

[SC856]

Hi, 

I have tried changing MTU setting.

There are subinterfaces on router 2921 at B-end.

Cogent information for the circuit:

The proposal was for EPL - Ethernet private line service

Features:  Ethernet HAndoff (electrical /optical)

Private and secure

Full speed Lan Extension

VLAN -based Connectivity

QinQ/Jumbo Frames

[Georg Pauwen]

Hello,

post the full running configurations of both ends.