Re: WAN become intermittent when connected to LAN Switch

corneliusar · ‎09-19-2011

Hi,

We are running GLBP on 2 router and 2 ISP and i have connected router to ISP A and already checked their bandwidth with Iperf from WAN cable and LAN cable (behind router) and no problem. But the WAN for ISP A become intermittent when i connect LAN cable to the switch even the traffic only reach 50% of our bandwidth for ISP A. I dont see any wierd logs in switch and router. I suppressed broadcast and multicast with level 20, but WAN ISP A still intermittent, it became normal when i shutdown LAN port connected to router A. I moved the port in switch and it still happen only for ISP A, no problem at all for ISP B.

What should i do with the port?

Thanks,

Ivan Krimmel · ‎09-24-2011

hi Cornelius,

what do you mean by the term 'intermittent'? as you said the bandwidth mark is 50%, so I hardly could imagine you are having packet loss on the WAN link A during the issue is there, am I right? is that switch connected to the rest of the network? what is the traffic rate in there? perhaps some ugly worm is probing its way out?

I think to start with we'd need to have a look at 'sh interface' from all the respective interfaces, also please do explain what is 'intermittent' in that case.

Did you try to connect the same swith to ISP_B router? Did you try to connect another switch/lan device to the router A?

HTH,

Ivan.

P.S. yes, the diagram is not opening.

corneliusar · ‎09-25-2011

Hi Ivan,

my term for intermittent means that the connection to the WAN is not consistant. As my picture above, i've connected 2 router to the same Switch to support GLBP using sub-interface. The switch connected to the rest of the network.

The WAN (10.173.3.122) become unstable or intermittent if i tried to ping it when i connect LAN port (172.22.11.2) to the switch. But there's no connection issue with Router B, only to Router A.

Here's the WAN LINK sh int from Router A

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

FastEthernet0/0 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6323.2ca8 (bia 0015.6323.2ca8)

Description: "CONECT to TELKOM VIA BRIDGE RADIO"

Internet address is 10.173.3.122/30

MTU 1500 bytes, BW 2560 Kbit/sec, DLY 100 usec,

reliability 255/255, txload 46/255, rxload 73/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 31

Queueing strategy: Class-based queueing

Output queue: 0/1000/0 (size/max total/drops)

5 minute input rate 742000 bits/sec, 196 packets/sec

5 minute output rate 464000 bits/sec, 233 packets/sec

82275468 packets input, 658555516 bytes

Received 3389 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 watchdog

0 input packets with dribble condition detected

80723731 packets output, 4012405773 bytes, 0 underruns

0 output errors, 0 collisions, 16 interface resets

24 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Here's the LAN link sh int from Router A

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

FastEthernet0/1 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6323.2ca9 (bia 0015.6323.2ca9)

Description: "IP_LAN"

MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

reliability 250/255, txload 3/255, rxload 2/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters 5d18h

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 105

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 1091000 bits/sec, 412 packets/sec

5 minute output rate 1475000 bits/sec, 369 packets/sec

114362504 packets input, 4071438734 bytes

Received 6135713 broadcasts, 2136 runts, 0 giants, 18 throttles

0 input errors, 0 CRC, 83 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

106840420 packets output, 73480055 bytes, 0 underruns

0 output errors, 0 collisions, 16 interface resets

68033 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Router_A#sh int f0/1.1

FastEthernet0/1.1 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6323.2ca9 (bia 0015.6323.2ca9)

Description: "CONECT to LAN"

Internet address is 172.22.11.2/16

MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

reliability 250/255, txload 3/255, rxload 2/255

Encapsulation 802.1Q Virtual LAN, Vlan ID 1.

ARP type: ARPA, ARP Timeout 04:00:00

Last clearing of "show interface" counters never

Here's the sh int of Switch Port from the switch connected to Router A

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

FastEthernet0/1 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 001e.14f4.5901 (bia 001e.14f4.5901)

Description: LINK-TO-"TOWER_LINK_MPLS"

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 6/255, rxload 8/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, media type is 10/100BaseTX

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:05, output 00:00:00, 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: fifo

Output queue: 0/40 (size/max)

5 minute input rate 3529000 bits/sec, 591 packets/sec

5 minute output rate 2468000 bits/sec, 669 packets/sec

84250458 packets input, 62226472691 bytes, 0 no buffer

Received 662717 broadcasts (0 multicasts)

13 runts, 5 giants, 0 throttles

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

0 watchdog, 529528 multicast, 456126 pause input

0 input packets with dribble condition detected

88842036 packets output, 30837872269 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

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

Its very confusing

Ivan Krimmel · ‎09-26-2011

Hi Cornelius,

thanks for getting back.

I would like to have a look at the same outputs taken off the part B of your setup.

Of particular interest are also 'sh policy map int for both routers A and B, as we can see the traffic-rate towards the router from the switch side is much higher than the router does afford on its WAN link, so it might be just QoS/oversubscription.

If the connection is not constant, does that mean you were able to see packets being dropped on that link? perhaps some pings were showing you some loss rate? The interface tells us 'Total output drops: 31' so I wouldn't expect a constant loss rate in there.

BR,

Ivan.

corneliusar · ‎09-26-2011

Hi Ivan,

Thanks for your response,

from ping result, i see some lost rate like this :

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

Reply from 10.173.3.122: bytes=32 time=92ms TTL=246

Reply from 10.173.3.122: bytes=32 time=84ms TTL=246

Reply from 10.173.3.122: bytes=32 time=61ms TTL=246

Reply from 10.173.3.122: bytes=32 time=182ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=77ms TTL=246

Reply from 10.173.3.122: bytes=32 time=129ms TTL=246

Reply from 10.173.3.122: bytes=32 time=135ms TTL=246

Reply from 10.173.3.122: bytes=32 time=29ms TTL=246

Reply from 10.173.3.122: bytes=32 time=80ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=134ms TTL=246

Reply from 10.173.3.122: bytes=32 time=137ms TTL=246

Reply from 10.173.3.122: bytes=32 time=39ms TTL=246

Reply from 10.173.3.122: bytes=32 time=50ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=146ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=142ms TTL=246

Reply from 10.173.3.122: bytes=32 time=50ms TTL=246

Reply from 10.173.3.122: bytes=32 time=131ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=14ms TTL=246

Reply from 10.173.3.122: bytes=32 time=42ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=19ms TTL=246

Reply from 10.173.3.122: bytes=32 time=207ms TTL=246

Reply from 10.173.3.122: bytes=32 time=49ms TTL=246

Reply from 10.173.3.122: bytes=32 time=81ms TTL=246

Reply from 10.173.3.122: bytes=32 time=155ms TTL=246

Reply from 10.173.3.122: bytes=32 time=127ms TTL=246

Reply from 10.173.3.122: bytes=32 time=48ms TTL=246

Reply from 10.173.3.122: bytes=32 time=128ms TTL=246

Reply from 10.173.3.122: bytes=32 time=123ms TTL=246

Reply from 10.173.3.122: bytes=32 time=74ms TTL=246

Reply from 10.173.3.122: bytes=32 time=102ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=112ms TTL=246

Reply from 10.173.3.122: bytes=32 time=96ms TTL=246

Reply from 10.173.3.122: bytes=32 time=93ms TTL=246

Reply from 10.173.3.122: bytes=32 time=60ms TTL=246

Reply from 10.173.3.122: bytes=32 time=89ms TTL=246

Reply from 10.173.3.122: bytes=32 time=181ms TTL=246

Reply from 10.173.3.122: bytes=32 time=130ms TTL=246

Reply from 10.173.3.122: bytes=32 time=136ms TTL=246

Request timed out.

Reply from 10.173.3.122: bytes=32 time=123ms TTL=246

Reply from 10.173.3.122: bytes=32 time=129ms TTL=246

Reply from 10.173.3.122: bytes=32 time=135ms TTL=246

Reply from 10.173.3.122: bytes=32 time=65ms TTL=246

Reply from 10.173.3.122: bytes=32 time=79ms TTL=246

Reply from 10.173.3.122: bytes=32 time=20ms TTL=246

Reply from 10.173.3.122: bytes=32 time=73ms TTL=246

Reply from 10.173.3.122: bytes=32 time=25ms TTL=246

Reply from 10.173.3.122: bytes=32 time=32ms TTL=246

here's show policy-map int f0/0 -------> WAN int router A.

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

Router_A#sh policy-map int f0/0

FastEthernet0/0

Service-policy output: Manage-VPN

queue stats for all priority classes:

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops) 0/0/0

(pkts output/bytes output) 120606/17899940

Class-map: VoIP-Control (match-any)

120606 packets, 17899940 bytes

5 minute offered rate 1000 bps, drop rate 0 bps

Match: access-group name VoIP-Data

29559 packets, 5529116 bytes

5 minute rate 0 bps

Match: access-group name VoIP-List

0 packets, 0 bytes

5 minute rate 0 bps

Match: access-group name VoIP-Control

74672 packets, 9577988 bytes

5 minute rate 0 bps

Match: ip precedence 3

16375 packets, 2792836 bytes

5 minute rate 1000 bps

QoS Set

dscp cs5

Packets marked 120606

Priority: 11% (281 kbps), burst bytes 7000, b/w exceed drops: 0

Class-map: VideoConference (match-any)

0 packets, 0 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: access-group name VideoIP

0 packets, 0 bytes

5 minute rate 0 bps

Match: ip precedence 3

0 packets, 0 bytes

5 minute rate 0 bps

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops) 0/0/0

(pkts output/bytes output) 0/0

QoS Set

precedence 3

Packets marked 0

bandwidth 15% (384 kbps)

Class-map: Data-Traffic (match-any)

436268 packets, 107479678 bytes

5 minute offered rate 10000 bps, drop rate 0 bps

Match: access-group name Data-List

435702 packets, 107270174 bytes

5 minute rate 10000 bps

Match: ip precedence 2

566 packets, 209504 bytes

5 minute rate 0 bps

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops) 0/0/0

(pkts output/bytes output) 436268/107479678

QoS Set

precedence 2

Packets marked 436268

bandwidth 40% (1024 kbps)

Class-map: OCS (match-any)

1576534 packets, 797223330 bytes

5 minute offered rate 29000 bps, drop rate 0 bps

Match: access-group name OCS

1576534 packets, 797223330 bytes

5 minute rate 29000 bps

Match: ip precedence 3

0 packets, 0 bytes

5 minute rate 0 bps

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops) 0/0/0

(pkts output/bytes output) 1576534/795765992

QoS Set

precedence 3

Packets marked 1576534

bandwidth 11% (281 kbps)

Class-map: SCADA-DATA (match-any)

0 packets, 0 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: access-group name SCADA

0 packets, 0 bytes

5 minute rate 0 bps

Match: ip precedence 2

0 packets, 0 bytes

5 minute rate 0 bps

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops) 0/0/0

(pkts output/bytes output) 0/0

QoS Set

precedence 2

Packets marked 0

bandwidth 20% (512 kbps)

Class-map: class-default (match-any)

10706985 packets, 1588484763 bytes

5 minute offered rate 202000 bps, drop rate 0 bps

Match: any

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops/flowdrops) 0/0/0/0

(pkts output/bytes output) 10707197/1597113691

Fair-queue: per-flow queue limit 16

Exp-weight-constant: 9 (1/512)

Mean queue depth: 0 packets

class Transmitted Random drop Tail/Flow drop Minimum Maximum Mark

pkts/bytes pkts/bytes pkts/bytes thresh thresh prob

0 10707197/1597113691 0/0 0/0 20 40 1/10

1 0/0 0/0 0/0 22 40 1/10

2 0/0 0/0 0/0 24 40 1/10

3 0/0 0/0 0/0 26 40 1/10

4 0/0 0/0 0/0 28 40 1/10

5 0/0 0/0 0/0 30 40 1/10

6 0/0 0/0 0/0 32 40 1/10

7 0/0 0/0 0/0 34 40 1/10

QoS Set

dscp default

Packets marked 10696522

Show policy-map int f0/1 ---->WAN interface router B

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

Router_B#sh policy-map int f0/1

FastEthernet0/1

Service-policy output: Manage-VPN

Class-map: VoIP-Control (match-any)

4359079 packets, 1806868564 bytes

5 minute offered rate 6000 bps, drop rate 0 bps

Match: access-group name VoIP-Data

1407433 packets, 977978981 bytes

5 minute rate 0 bps

Match: access-group name VoIP-List

0 packets, 0 bytes

5 minute rate 0 bps

Match: access-group name VoIP-Control

859213 packets, 166228476 bytes

5 minute rate 0 bps

Match: access-group 152

12 packets, 4044 bytes

5 minute rate 0 bps

Match: access-group name VideoIP

2092421 packets, 662657063 bytes

5 minute rate 5000 bps

QoS Set

precedence 5

Packets marked 4359079

Queueing

Output Queue: Conversation 265

Bandwidth 10 (%)

Bandwidth 307 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 7004/1493824

(depth/total drops/no-buffer drops) 0/0/0

Class-map: VideoConference (match-any)

0 packets, 0 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: access-group name VideoIP

0 packets, 0 bytes

5 minute rate 0 bps

QoS Set

precedence 5

Packets marked 0

Queueing

Output Queue: Conversation 266

Bandwidth 20 (%)

Bandwidth 614 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 0/0

(depth/total drops/no-buffer drops) 0/0/0

Class-map: Data-Traffic (match-any)

6394359 packets, 818376552 bytes

5 minute offered rate 2000 bps, drop rate 0 bps

Match: access-group name Data-List

6394359 packets, 818376459 bytes

5 minute rate 2000 bps

QoS Set

precedence 3

Packets marked 6394360

Queueing

Output Queue: Conversation 267

Bandwidth 40 (%)

Bandwidth 1228 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 549424/69101242

(depth/total drops/no-buffer drops) 0/0/0

Class-map: SCADA (match-any)

129176213 packets, 24890927800 bytes

5 minute offered rate 291000 bps, drop rate 0 bps

Match: access-group name SCADA

129176218 packets, 24890927775 bytes

5 minute rate 291000 bps

QoS Set

precedence 3

Packets marked 129176222

Queueing

Output Queue: Conversation 268

Bandwidth 5 (%)

Bandwidth 153 (kbps)Max Threshold 64 (packets)

(pkts matched/bytes matched) 6511784/640586610

(depth/total drops/no-buffer drops) 0/0/0

Class-map: class-default (match-any)

114075 packets, 11866367 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: any

Queueing

Flow Based Fair Queueing

Maximum Number of Hashed Queues 256

(total queued/total drops/no-buffer drops) 0/0/0

exponential weight: 9

class Transmitted Random drop Tail drop Minimum Maximum Mark

pkts/bytes pkts/bytes pkts/bytes thresh thresh prob

0 114075/11866367 0/0 0/0 20 40 1/10

1 0/0 0/0 0/0 22 40 1/10

2 0/0 0/0 0/0 24 40 1/10

3 0/0 0/0 0/0 26 40 1/10

4 0/0 0/0 0/0 28 40 1/10

5 0/0 0/0 0/0 30 40 1/10

6 0/0 0/0 0/0 32 40 1/10

7 0/0 0/0 0/0 34 40 1/10

rsvp 0/0 0/0 0/0 36 40 1/10

QoS Set

dscp default

Packets marked 0

Please help me to analyze this

Thank you

Leo Laohoo · ‎09-26-2011

Here's the LAN link sh int from Router A

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

FastEthernet0/1 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6323.2ca9 (bia 0015.6323.2ca9)

Description: "IP_LAN"

MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

reliability 250/255, txload 3/255, rxload 2/255

You have a cable problem. The "reliability" value should be 255/255

corneliusar · ‎09-26-2011

Hi Leolaohoo,

If the LAN interface cable is the problem, then why unstable connectivity happen on WAN interface when i try to ping the WAN IP address from the opposite router?

BR,

Leo Laohoo · ‎09-27-2011

FastEthernet0/1 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6323.2ca9 (bia 0015.6323.2ca9)

Description: "IP_LAN"

MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

reliability 250/255, txload 3/255, rxload 2/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters 5d18h

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 105

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 1091000 bits/sec, 412 packets/sec

5 minute output rate 1475000 bits/sec, 369 packets/sec

114362504 packets input, 4071438734 bytes

Received 6135713 broadcasts, 2136 runts, 0 giants, 18 throttles

0 input errors, 0 CRC, 83 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

106840420 packets output, 73480055 bytes, 0 underruns

0 output errors, 0 collisions, 16 interface resets

68033 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Hi Cornelius,

Maybe I'm wrong. But something just DOES NOT ADD UP with your initial post.

According to your initial post, this interface's counters was cleared "5d18h". Look at the "Total output drops". That's not good. Next, look at the input and output errors. Input has some "frame" errors. Output has "unknown protocol drops". Of course the "reliability" is 250 is another thing.

I'm no expert what "frame" and "unknown protocol drops" errors are but my first reaction would be to swap out the cable.

Ivan Krimmel · ‎09-27-2011

Hi Cornelius,

thanks for additional outputs. Let's have a look at 'sh interface' outputs taken off the leg B of your topology, like you have done before for the leg A - from the router B interfaces, and the switch interface towards router B. As I said, I would like to narrow down the QoS/oversubscription matter.

Have a great day,

Ivan.

corneliusar · ‎09-27-2011

Hi Ivan,

Sorry i forgot to add some informations from router B,

WAN int Router B

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

Router_B#sh int f0/1

FastEthernet0/1 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6322.e227 (bia 0015.6322.e227)

Description: **\Link to VPN-IP XL/**

Internet address is 10.172.179.150/30

MTU 1500 bytes, BW 3072 Kbit, DLY 100 usec,

reliability 255/255, txload 27/255, rxload 60/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/3995/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: Class-based queueing

Output queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/2/256 (active/max active/max total)

Reserved Conversations 4/4 (allocated/max allocated)

Available Bandwidth 2 kilobits/sec

5 minute input rate 726000 bits/sec, 236 packets/sec

5 minute output rate 332000 bits/sec, 194 packets/sec

156232219 packets input, 2807704202 bytes

Received 32154 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 watchdog

0 input packets with dribble condition detected

146465380 packets output, 1752281153 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

31348 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

LAN int Router B

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

Router_BI#sh int f0/0

FastEthernet0/0 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6322.e226 (bia 0015.6322.e226)

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 2/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/2512/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 642000 bits/sec, 298 packets/sec

5 minute output rate 1095000 bits/sec, 318 packets/sec

238800808 packets input, 3756944872 bytes

Received 19010019 broadcasts, 0 runts, 0 giants, 0 throttles

139 input errors, 0 CRC, 0 frame, 0 overrun, 139 ignored

0 watchdog

0 input packets with dribble condition detected

230144780 packets output, 723397526 bytes, 0 underruns

0 output errors, 0 collisions, 11 interface resets

310161 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Router_B#sh int f0/0.1

FastEthernet0/0.1 is up, line protocol is up

Hardware is Gt96k FE, address is 0015.6322.e226 (bia 0015.6322.e226)

Description: **\Link to LAN Kaji/**

Internet address is 172.22.11.3/16

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 2/255, rxload 1/255

Encapsulation 802.1Q Virtual LAN, Vlan ID 1.

ARP type: ARPA, ARP Timeout 04:00:00

Last clearing of "show interface" counters never

LAN port Switch to Router B

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

SWITCH#sh int f0/1

FastEthernet0/1 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 001e.14f4.5901 (bia 001e.14f4.5901)

Description: LINK-TO-"TOWER_LINK_MPLS"

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 6/255, rxload 9/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, media type is 10/100BaseTX

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:02, output 00:00:00, 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: fifo

Output queue: 0/40 (size/max)

5 minute input rate 3603000 bits/sec, 645 packets/sec

5 minute output rate 2515000 bits/sec, 692 packets/sec

128634784 packets input, 94510942305 bytes, 0 no buffer

Received 963880 broadcasts (0 multicasts)

52 runts, 14 giants, 0 throttles

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

0 watchdog, 753560 multicast, 851613 pause input

0 input packets with dribble condition detected

136154948 packets output, 47901012787 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

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

Regards,