Packet loss at 7609

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Expand view Topic review: Packet loss at 7609

Re: Packet loss at 7609

by leoghoul » Thu Jan 23, 2014 9:43 am

hi dear,

Do you haved sucess in this problem ?

Now, I'm the same problem with a CISCO7606-S


Re: Packet loss at 7609

by leoghoul » Thu Jan 23, 2014 9:39 am


Do you have sucess in this problem?

Now, i haved the same problem with CISCO7606-S.


Packet loss at 7609

by isaias.azeredo » Wed Jul 06, 2011 11:45 pm

Hi all,

Could you help me with this?

1. When I perform an extended* ping from the ISP-7600 pointng to the CPE, I have some packet loss.
*ping <cpe_ip> size 1500 repeat 10000

2. If I change the source of extended ping to a device before 7609, for example, I have no packet loss.

3. If I remove the policy in 7600 and keep this as the source of the extended ping, packet loss not happen anymore.

The third item is what bothers me. What would explain this situation?


- Routing Protocol: Static

- Interface of the 7600 that points to CPE:
ROTAGG-01#show run int po 20.2001
interface Port-channel20.2001
description Customer_x encapsulation dot1Q 2001
ip address x.x.x.x/30
ip access-group CLIENTES-IN in
no ip redirects
no ip unreachables
no ip proxy-arp
ntp disable
service-policy output 4M

ROTAGG-01#show int po20.2001
Port-channel20.2001 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 5475.d0ad.f800 (bia 5475.d0ad.f800)
Description: >> Customer_x
Internet address is x.x.x.x/30
MTU 1900 bytes, BW 2000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 2001.
ARP type: ARPA, ARP Timeout 04:00:00
Keepalive set (10 sec)
0 packets input, 0 bytes
0 packets output, 0 bytes
Last clearing of "show interface" counters never

ROTAGG-01#show policy-map int po20.2001

Service-policy output: 4M

Counters last updated 00:00:05 ago

Class-map: POLICY (match-any)
219358438 packets, 200231319082 bytes
30 second offered rate 531000 bps, drop rate 30000 bps
Match: any
0 packets, 0 bytes
30 second rate 0 bps
cir 4000000 bps, bc 125000 bytes
conformed 215826660 packets, 195052293084 bytes; actions:
exceeded 3531778 packets, 5179025998 bytes; actions:
conformed 822000 bps, exceed 50000 bps

Class-map: class-default (match-any)
0 packets, 0 bytes
30 second offered rate 0000 bps, drop rate 0000 bps
Match: any
0 packets, 0 bytes
30 second rate 0 bps

Does anyone know what could be the root cause?