Very High Receive Errors 7204 Router

[derrickcameron]

Hello All,

I have a 7204 router that is getting an extremely high number of receive errors daily. Somewhere around a million receive errors a day.  I've included the show interface output below, please let me know if you need any other information. It's not a speed or duplex mismatch. This port is an internet connection to part of our network using a sub interface.

FastEthernet0/0 is up, line protocol is up
Hardware is i82543 (Livengood), address is xxxx.xxxx.xxxx (bia xxxx.xxxx.xxxx)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 3/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1., 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: 0/75/209640/178354 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1351000 bits/sec, 508 packets/sec
5 minute output rate 299000 bits/sec, 342 packets/sec
4182135577 packets input, 147943558 bytes
Received 1834601577 broadcasts, 0 runts, 0 giants, 2386 throttles
121195941 input errors, 0 CRC, 0 frame, 15183091 overrun, 106012850 ignored
0 watchdog
0 input packets with dribble condition detected
3048370593 packets output, 4157164315 bytes, 0 underruns
5 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
5 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

[Seb Rupik · Accepted solution]

Hi there,

It looks like fa0/0 is on a linecard/ module which is not capable at switching the volume of data that it is receiving; hence the large overrun and input drop/flush numbers.

What module does the swithport reside on?

sh inv
sh module

cheers,

Seb.

[derrickcameron]

Here's the show inventory output, but I can't use the show module.

Also thanks Seb.

show inventory
NAME: "Chassis", DESCR: "Cisco 7204VXR, 4-slot chassis"
PID: CISCO7204VXR      , VID:    , SN: 31652262   

NAME: "NPE400 0", DESCR: "Cisco 7200VXR Network Processing Engine NPE-400"
PID: NPE-400           , VID: V01 , SN: 35693087   

NAME: "module 0", DESCR: "I/O Dual FastEthernet Controller"
PID: C7200-I/O-2FE/E   , VID:    , SN: 31687305   

NAME: "disk0", DESCR: "Cisco 7200 I/O PCMCIA Flash Disk, 64M"
PID: MEM-I/O-FLD64M    , VID:    , SN:            

NAME: "Power Supply 1", DESCR: "Cisco 7200 AC Power Supply"
PID: PWR-7200-AC       , VID:    , SN:            

NAME: "Power Supply 2", DESCR: "Cisco 7200 AC Power Supply"
PID: PWR-7200-AC       , VID:    , SN:           

[derrickcameron]

show hw-module all fpd

==== ====================== ====== =============================================
                             H/W   Field Programmable   Current   Min. Required
Slot Card Type               Ver.  Device: "ID-Name"    Version      Version
==== ====================== ====== ================== =========== ==============
 npe NPE-400                 2.1   ############           #.#         #.#
==== ====================== ====== =============================================

[Seb Rupik]

I can't find much infomration on the C7200-I/O-2FE/E modules switch performance. From the interface output I'd say you have reached its limit.

I encountered a similar issue on 7206VXR router a few years back which was remedided by moving the traffic to a more capable linecard/ interface:

http://config-if.blogspot.co.uk/2013/08/cisco-7206vxr-fa-ge-port-adapter.html

...however you have nowhere to move the link to. Consider either policing the traffic before it reaches your 7204, or ebaying yourself some new components.

cheers,

Seb.

[derrickcameron]

Thanks Seb

I'll let you know if a better NPE fixes the issue