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Beginner

Catalyst 2950 - throttles and ignored

I have many throttles and ignoreds packets in VLAN 1 and ignoreds packets in the interface who is in STP Blocking state.

The latency increase in the network and when I ping the interface VLAN 1 I receive response at more than 500ms.

I did put sniffer in the switch and verified that have no loop.

I need help to resolve this problem

3 REPLIES 3
Enthusiast

Re: Catalyst 2950 - throttles and ignored

Let's check the cpu utilization.

Beginner

Re: Catalyst 2950 - throttles and ignored

CPU utilization is normal (10%).

Highlighted
Beginner

Re: Catalyst 2950 - throttles and ignored

I've the same problem too. I did a test ping a laptop on the access-port on the switch and the ping was sucessfull, but when I try to ping management vlan it has a high latency and packet loss.

Tests did:

no loop;

no stp recalculation;

Management vlan and access-vlan are diferent thant vlan 1;

No high cpu;

no memory issue;

I see: throttles , ignored packets;

 

Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
---------------------------------------------------------------------
* Vlan10 0 0 0 0 66000 119 21000 39 5762

 

interface Vlan10
ip address x.x.x.x 255.255.255.0
no ip route-cache

 


#show processes memory
Total: 7912448, Used: 4946636, Free: 2965812
PID TTY Allocated Freed Holding Getbufs Retbufs Process
0 0 121548 5044 3369044 0 0 *Init*
0 0 820 103434860 820 0 0 *Sched*

sh processes cpu
CPU utilization for five seconds: 25%/4%; one minute: 25%; five minutes: 25%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
1 0 2 0 0.00% 0.00% 0.00% 0 Chunk Manager
2 153180 10299601 14 0.00% 0.00% 0.00% 0 Load Meter
3 797008 211662 3765 0.00% 0.00% 0.00% 0 SpanTree Helper

 

sh interfaces vlan 10
Vlan10 is up, line protocol is up
Hardware is CPU Interface, address is 
Internet address is x.x.x.x/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, 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: 0/40 (size/max)
5 minute input rate 67000 bits/sec, 120 packets/sec
5 minute output rate 26000 bits/sec, 44 packets/sec
2202280305 packets input, 3444219148 bytes, 0 no buffer
Received 44378752 broadcasts (0 IP multicast)
0 runts, 0 giants, 7720380 throttles   <------------------------------------------
0 input errors, 0 CRC, 0 frame, 0 overrun, 50 ignored <---------------------------------------
1308550940 packets output, 3189781228 bytes, 0 underruns
0 output errors, 1 interface resets
0 output buffer failures, 0 output buffers swapped out

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