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Community Member

Multicast traffic measuring on VLAN interface

Hi,

a want to measure the unicast or multicast traffic (in bps) on a vlan interface on 65xx switch. Is that possible with SNMP?

I tried v2 IF-MIB, and IFxMIB counters, but for vlan interfaces these are not responded, and these are in pkts/sec :(

The 'show interface vlanxxx' commands output is more informative,

Vlanxxx is up, line protocol is up

Hardware is EtherSVI, address is 000f.8fe1.3400 (bia 000f.8fe1.3400)

Description: xxxxxx

Internet address is 10.14.0.1/16

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 00:00:01, output 00:00:00, output hang never

Last clearing of "show interface" counters 6d18h

Input queue: 0/75/38/38 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

30 second input rate 3000 bits/sec, 2 packets/sec

30 second output rate 136000 bits/sec, 10 packets/sec

L2 Switched: ucast: 1250 pkt, 98856 bytes - mcast: 41820 pkt, 4251927 bytes

L3 in Switched: ucast: 7168180 pkt, 810809346 bytes - mcast: 0 pkt, 0 bytes mcast

L3 out Switched: ucast: 9038230 pkt, 10362892929 bytes mcast: 6479975256 pkt, 9324774422980 bytes

7263467 packets input, 819716178 bytes, 0 no buffer

Received 82405 broadcasts (199 IP multicast)

0 runts, 0 giants, 0 throttles

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

9132044 packets output, 10370663348 bytes, 0 underruns

0 output errors, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

L3 out Switched: ucast: 9038230 pkt, 10362892929 bytes mcast: 6479975256 pkt, 9324774422980 bytes

The values are available via SNMP? At which OIDs?

Thanx!

2 REPLIES
Community Member

Re: Multicast traffic measuring on VLAN interface

I would suggest activating netflow on the desired interfaces. This will provide granularity that is not available from the interface counters. Keep in Netflow will present load to the device. You can then pull the Neflow statistics via several methods.

Community Member

Re: Multicast traffic measuring on VLAN interface

We tried, and used Netflow for other purposes, but it's caused several stability issues. We've got more gigs traffic on these links, and if the Netflow is active the switches hangs on frequently.

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