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New Member

HSRP lossing 50%-75% of the packets

Hi,

I'm running HSRP in a small LAN.... I am using two 800 series which are connected to a 2960Switch... the configuration in the routers is as per below....

For Router-2:

interface Ethernet0

ip address 192.168.0.3 255.255.255.0

standby 1 ip 192.168.0.4

standby 1 priority 200

standby 1 preempt

hold-queue 100 out

For Router-1:

interface Ethernet0

ip address 192.168.0.3 255.255.255.0

standby 1 ip 192.168.0.4

standby 1 priority 101

standby 1 preempt

hold-queue 100 out

The HSRP seems to be working, i.e. for Router-1, the State is Standby and for Router-2, the State is Active.

I also have a laptop connected to the 2960Switch with IP address 192.168.0.1, default-gateway 192.168.0.4 (the virtual address)

Now my problem.......when I ping from the laptop to the virtual address I get a 50%-75% lost every time......and the same happens when I ping from the router to the laptop.......

Any ideas as of why I dont get a 0% loss????

Thank you for any help

25 REPLIES
Purple

Re: HSRP lossing 50%-75% of the packets

Hi,

This may not be the cause of the problem but why are you using the same IP address (192.168.0.3) on both of your Ethernet interfaces. They need to be different. The virtual HSRP IP address is the one that is shared by them.

Hope that helps - pls do remember to rate posts that help.

Paresh

Purple

Re: HSRP lossing 50%-75% of the packets

Yu might want to try and clear the ARP cache on your laptop and then re-do the tests...

Paresh

New Member

Re: HSRP lossing 50%-75% of the packets

I cleared the arp lists in the laptop, the switch and the active router and I am still geting 50%-75% packet lost when pinging........

now when I do an "arp -a" on the laptop there is one entry to 192.168.0.4 as per below

192.168.0.4 00-00-0c-07-ac-01 dynamic

However, when I do a show arp in the switch the list is blank......even after having done a ping from the laptop........I wonder if this is because both routers are using the same MAC address and this is confusing the switch i.e. it is sending half of the packets to router-1 and the other half to router-2???

Could this be a problem caused by using HSRP over Ethernet???

again, thank you for any comments

Re: HSRP lossing 50%-75% of the packets

Hi Friend,

When you initiate a ping from laptop the arp entry will be learned on the laptop but WHY will switch get an arp entry.

If you initiate a ping from switch to the HSRP ip address and if you get a reply you will see the arp entry learned on the switch also.

You will only geta ping reply if the switch ip address and the router hsrp address are in same subnet. Also try to manually configure the speed and duplex setting son router and laptop and the switchports on which both the router and laptop is connected and check the results.

HTH, if yes please rate the post.

Ankur

New Member

Re: HSRP lossing 50%-75% of the packets

Hi,

I manually configured all the ports in the switch and the routers but I am still having the same problems...

It seems to me that the problem is in the switch as I can ping from the laptop to the switch no problem, but when pinging from the switch to the virtual address lots of packets get lost...

Re: HSRP lossing 50%-75% of the packets

Hi Friend,

Once you ping from the switch you see a packet loss so seems to be a problem between a switch and router now.

Can you also post the output "sh int " from the switch as well as router and if possible can you try changing the cable between switch and router.

Regards,

Ankur

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

output from switch interface that connects to Active router....

Switch#sh int fa0/3

FastEthernet0/3 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 0017.5a65.0705 (bia 0017.5a65.0705)

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

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

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 00:00:40, 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: 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

3998 packets input, 312822 bytes, 0 no buffer

Received 3367 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 3283 multicast, 0 pause input

0 input packets with dribble condition detected

11470 packets output, 852690 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

and output of interface from active router

Router_2#sh int ethernet 0

Ethernet0 is up, line protocol is up

Hardware is PQUICC Ethernet, address is 0000.0c07.ac01 (bia 0014.a8ab.6d28)

Internet address is 192.168.0.3/24

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

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

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 10Mb/s

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: 0

Queueing strategy: fifo

Output queue: 0/100 (size/max)

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

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

5287 packets input, 422915 bytes, 0 no buffer

Received 4791 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

4892 packets output, 355970 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

I also swapped cables for one that I am 100% sure it works but still same problem.......

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

output from switch interface that connects to Active router....

Switch#sh int fa0/3

FastEthernet0/3 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 0017.5a65.0705 (bia 0017.5a65.0705)

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

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

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 00:00:40, 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: 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

3998 packets input, 312822 bytes, 0 no buffer

Received 3367 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 3283 multicast, 0 pause input

0 input packets with dribble condition detected

11470 packets output, 852690 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

and output of interface from active router

Router_2#sh int ethernet 0

Ethernet0 is up, line protocol is up

Hardware is PQUICC Ethernet, address is 0000.0c07.ac01 (bia 0014.a8ab.6d28)

Internet address is 192.168.0.3/24

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

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

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 10Mb/s

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: 0

Queueing strategy: fifo

Output queue: 0/100 (size/max)

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

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

5287 packets input, 422915 bytes, 0 no buffer

Received 4791 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

4892 packets output, 355970 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

I also swapped cables for one that I am 100% sure it works but still same problem.......

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

output from switch interface that connects to Active router....

Switch#sh int fa0/3

FastEthernet0/3 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 0017.5a65.0705 (bia 0017.5a65.0705)

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

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

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 00:00:40, 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: 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

3998 packets input, 312822 bytes, 0 no buffer

Received 3367 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 3283 multicast, 0 pause input

0 input packets with dribble condition detected

11470 packets output, 852690 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

and output of interface from active router

Router_2#sh int ethernet 0

Ethernet0 is up, line protocol is up

Hardware is PQUICC Ethernet, address is 0000.0c07.ac01 (bia 0014.a8ab.6d28)

Internet address is 192.168.0.3/24

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

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

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 10Mb/s

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: 0

Queueing strategy: fifo

Output queue: 0/100 (size/max)

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

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

5287 packets input, 422915 bytes, 0 no buffer

Received 4791 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

4892 packets output, 355970 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

I also swapped cables for one that I am 100% sure it works but still same problem.......

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

output from switch interface that connects to Active router....

Switch#sh int fa0/3

FastEthernet0/3 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 0017.5a65.0705 (bia 0017.5a65.0705)

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

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

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 00:00:40, 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: 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

3998 packets input, 312822 bytes, 0 no buffer

Received 3367 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 3283 multicast, 0 pause input

0 input packets with dribble condition detected

11470 packets output, 852690 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

and output of interface from active router

Router_2#sh int ethernet 0

Ethernet0 is up, line protocol is up

Hardware is PQUICC Ethernet, address is 0000.0c07.ac01 (bia 0014.a8ab.6d28)

Internet address is 192.168.0.3/24

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

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

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 10Mb/s

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: 0

Queueing strategy: fifo

Output queue: 0/100 (size/max)

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

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

5287 packets input, 422915 bytes, 0 no buffer

Received 4791 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

4892 packets output, 355970 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

I also swapped cables for one that I am 100% sure it works but still same problem.......

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

output from switch interface that connects to Active router....

Switch#sh int fa0/3

FastEthernet0/3 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 0017.5a65.0705 (bia 0017.5a65.0705)

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

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

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 00:00:40, 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: 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

3998 packets input, 312822 bytes, 0 no buffer

Received 3367 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 3283 multicast, 0 pause input

0 input packets with dribble condition detected

11470 packets output, 852690 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

and output of interface from active router

Router_2#sh int ethernet 0

Ethernet0 is up, line protocol is up

Hardware is PQUICC Ethernet, address is 0000.0c07.ac01 (bia 0014.a8ab.6d28)

Internet address is 192.168.0.3/24

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

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

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 10Mb/s

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: 0

Queueing strategy: fifo

Output queue: 0/100 (size/max)

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

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

5287 packets input, 422915 bytes, 0 no buffer

Received 4791 broadcasts, 0 runts, 0 giants, 0 throttles

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

0 input packets with dribble condition detected

4892 packets output, 355970 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

I also swapped cables for one that I am 100% sure it works but still same problem.......

Purple

Re: HSRP lossing 50%-75% of the packets

Hi,

Your router interface is 10Mbps but your switch interface is set to 100Mbps. Set the switch interface speed to 10Mbps and you should be okay.

Hope that helps - pls do remember to rate posts that help.

Paresh

New Member

Re: HSRP lossing 50%-75% of the packets

Hello....

I changed the speed on the interfaces so that both router and switch are using the same but I'm still having the same problem....

Router_2#sh int fa1

FastEthernet1 is up, line protocol is up

Hardware is FastEthernet, address is 0000.0000.0000 (bia 0000.0000.0000)

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

reliability 255/255, txload 1/255, 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 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: fifo

Output queue: 0/0 (size/max)

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

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

5065 packets input, 0 bytes

Received 0 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

13881 packets output, 0 bytes, 0 underruns

0 output errors, 0 collisions, 5 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Purple

Re: HSRP lossing 50%-75% of the packets

Have you changed the physical interface on the router ? Your original post indicated a 10Mbps interface (Ethernet) whereas this one indicates a 100Mbps interface (FastEthernet). Also, this one indicates a MAC address of all zeros...

Paresh

Purple

Re: HSRP lossing 50%-75% of the packets

Hi,

That MAC address is correct. The switch should not care about the ARP so you should not expect to see anything on the switch at all so what you see is okay.

Could you try pinging the actual IP address of each router separately i.e. ping 192.168.0.2 and 192.168.0.3 and see if you get 100% packets back ? If you do, then HSRP is the issue. If you don't, you've got other issues...

Hope that helps - pls do remember to rate posts that help.

Paresh

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

when I ping the 0.2 and 0.3 address I still get the same results....lost of packets being lost.....

I still think that the problem is in the switch though.... when I ping from the laptop to the switch I get a 100% success....i.e. zero packets are lost....

however when I go into the switch and try to ping the 0.3 or the 0.4 (virtual address) 50 to 75% of packets are lost........however, if I ping the 0.2 address (standby router) all the ping come back successfully??????

what do you think about this???

thanks again

Purple

Re: HSRP lossing 50%-75% of the packets

Are all the ports in the management VLAN of the switch ?

The fact that you get 100% ping response from 192.168.0.2 would indicate that there is an issue with the 192.168.0.3 router which is also where the pings to 0.4 are going, since it is the active router.

Can you ping 0.2 successfully from the 0.3 router ?

Hope that helps - pls do remember to rate posts that help.

Paresh

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

yes, all ports are in the default VLAN

when pinging 0.2 from the 0.3 router I get 0% success rate every time

.....and the same happens if I ping 0.3 from the 0.2 router

pinging from standby router to switch......success is 80% to 100%

however pinging from active router to switch success drop to 60% most of the times

however, both routers have very same configuration as to how to get to network 192.168.0.0

ip route 192.168.0.0 255.255.255.0 Ethernet0

cheers

Re: HSRP lossing 50%-75% of the packets

Hi Friend,

Some how I think the issue is in physical layer only between active router and switchport.

Try changing the cable between active router and switchport.

Ankur

New Member

Re: HSRP lossing 50%-75% of the packets

Hi again,

I swapped cables for a cable that I know it works fine and still experiencing the same problem.....

I think I going to swap the routers....I'm getting a feeling the issue might be the router itself....

Purple

Re: HSRP lossing 50%-75% of the packets

Hi,

The other thing you can quickly do is to connect the laptop to the router using a crossover cable. At least that will tell you whether it is the router or the switch in the middle that is causing this.

Paresh

New Member

Re: HSRP lossing 50%-75% of the packets

sorry, that's a typo mistake.......for Router-1 ip address on Ethernet interface is 192.168.0.2 and for Router-2 is 192.168.0.3

sorry about this.....

Re: HSRP lossing 50%-75% of the packets

Hi Friend,

can you check the speed and duplex setting on laptop and router. As per the confir which you posted router is on auto auto settings.

Is it possible to manually configure speed and duplex settings on laptop and router and then try the test.

Regards,

Ankur

Purple

Re: HSRP lossing 50%-75% of the packets

Hi,

Your router interface is 10Mbps but your switch interface is set to 100Mbps. Set the switch interface speed to 10Mbps and you should be okay.

Hope that helps - pls do remember to rate posts that help.

Paresh

New Member

Re: HSRP lossing 50%-75% of the packets

Your physical addresses should not be the same.

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