ethernet switch module on 2951 shows no stats for vlan interfaces

[paul amaral]

Hi, i have a cisco 2951 with a Ethernet Switch plugged into it, everything is working great but for some strange reason when i connect to the ES module i can't see any stats on the L3 vlan interface. The associated switchport does show stats but the L3 vlan interface doesn't show any.

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 18 SM-ES3G-16-P 15.0(2)SE10a C3560E-UNIVERSALK9-M

 
Vlan150 is up, line protocol is up
Hardware is EtherSVI, address is 8890.8d8f.d046 (bia 8890.8d8f.d046)
Internet address is xxxxxxxxx
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
61115 packets input, 6967284 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
10902 packets output, 787518 bytes, 0 underruns

Is this a bug with the module or the ios on that module? 

System image file is "flash:/c3560e-universalk9-mz.150-2.SE10a/c3560e-universalk9-mz.150-2.SE10a.bin"

This is very strange that i cant see input/output stats on that vlan interface. 

TIA, Paul 

[Julio E. Moisa]

Hi

If you execute a: show ip interface brief, do you see anything?

[paul amaral]

Julio thanks for the reply, yes i can

sh ip interface brief

Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES NVRAM administratively down down
Vlan5 172.18.0.1 YES NVRAM up up
Vlan10 10.10.13.1 YES NVRAM up up
Vlan50 172.18.0.9 YES NVRAM up up
Vlan100 209.213.79.97 YES NVRAM up up
Vlan150 209.213.79.233 YES NVRAM up up
Vlan200 209.213.79.237 YES NVRAM up up
Vlan210 209.213.79.21 YES NVRAM up up
Vlan250 209.213.79.45 YES NVRAM up down
Vlan300 209.213.79.17 YES NVRAM up down

just cant see stats on the actual vlan, i know this module is based on the 3750 switch and i already ran into bug CSCtx86444 not sure if this is another bug. 

[paul driver]

Hello

Is this SVI actually being used or is it just the case that Vl150 is now a pure L2 connection?

Clear the interface counters and piing that ithe ip address and see what results you get?

res
Paul

[paul amaral]

This module is based on the 3750 and i got my answer searching.

Joe Clarke 7 years ago

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On the 3750, the packets are switched in hardware and this is not counted in the VLAN SVI counters.  You will only see management and CPU-switched traffic there.  There is no way to get at the L3 counters on this platform.  The 6500 and 7600s support the CISCO-SWITCH-ENGINE-MIB which does expose these counters, however.

[paul amaral]

module based on the 3750 

Joe Clarke 7 years ago

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• Hall of Fame,

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On the 3750, the packets are switched in hardware and this is not counted in the VLAN SVI counters.  You will only see management and CPU-switched traffic there.  There is no way to get at the L3 counters on this platform.  The 6500 and 7600s support the CISCO-SWITCH-ENGINE-MIB which does expose these counters, however.

 https://supportforums.cisco.com/discussion/10946551/c3750-snmp-mrtg-vlan-interface-counters