Not all packets are forwarded

[Leon_Wessels]

When I enable port mirroring on our Extreme Summit x460-24t not all the packets are sent to the mirror destination port. In a wireshark capture from the mirror port I only see very few (less than 1% of the actual) audio packets (ieee1722.cdfield == 0). When doing a packet capture using another (non-extreme) switch I see all the packets.

To enable port mirroring I used these commands:

# enable mirror lavb to port 1
# config mirror lavb add port 9-15
# show mirror

DefaultMirror (Disabled)
Description: Default Mirror Instance, created automatically
Mirror to port: 1
Source filters configured :
Ports 9-24, all vlans, ingress and egress

lavb (Enabled)
Description:
Mirror to port: 1
Source filter instances used : 7
Port 9, all vlans, ingress and egress
Port 10, all vlans, ingress and egress
Port 11, all vlans, ingress and egress
Port 12, all vlans, ingress and egress
Port 13, all vlans, ingress and egress
Port 14, all vlans, ingress and egress
Port 15, all vlans, ingress and egress

Mirrors defined: 2
Mirrors enabled: 1 (Maximum 4)
HW filter instances used: 7 (Maximum 128)
HW mirror instances used: 1 ingress, 1 egress (Maximum 4 total, 2 egress)

Switch version:
* X460-24p.2 # show version
Switch : 800323-00-05 1120G-81240 Rev 5.0 BootROM: 2.0.1.7 IMG: 16.1.1.4
PSU-1 : PSSF751301A-11 800382-00-04 1120A-40142
PSU-2 :

Image : ExtremeXOS version 16.1.1.4 16.1.1.4-patch1-1 by release-manager
on Thu Aug 6 16:14:58 EDT 2015
BootROM : 2.0.1.7
Diagnostics : 6.3

Am I missing something in the configuration? Each of those ports has a maximum of 18Mbps traffic so the total traffic should be much less than the 1Gbps allowed by the port being mirrored to.

[Leon_Wessels]

I checked and promiscuous mode was enabled.

[Bill_Stritzinge]

Leon,

Your configuration looks OK. Have you checked the drivers of the NIC on the laptop or machine running wireshark? I have seen where issues on the drivers prevents sometimes packets with tags and other strange things and/or traffic not being seen. Check that and let us know...

Bill

[Leon_Wessels]

Hi

I'm using Ubuntu 14.04 with kernel 3.13.0-85-generic.
I tried these three network cards (output from lspci)
01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM57762 Gigabit Ethernet PCIe
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
06:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)

I also tried the following on the pc:
# sudo vconfig add eth2 2
# sudo cat /proc/net/vlan/config
VLAN Dev name | VLAN ID
Name-Type: VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD
eth2.2 | 2 | eth2
# sudo cat /proc/net/vlan/eth2.2
eth2.2 VID: 2 REORDER_HDR: 1 dev->priv_flags: 1
total frames received 1166
total bytes received 261184
Broadcast/Multicast Rcvd 1166

total frames transmitted 0
total bytes transmitted 0
Device: eth2
INGRESS priority mappings: 0:0 1:0 2:0 3:0 4:0 5:0 6:0 7:0
EGRESS priority mappings:

On the switch it seems that the avb packets have vlan tag 2.
# show vlan SYS_VLAN_0002
VLAN Interface with name SYS_VLAN_0002 created dynamically
Admin State: Enabled Tagging: 802.1Q Tag 2
Description: None
Virtual router: VR-Default
IPv4 Forwarding: Disabled
IPv4 MC Forwarding: Disabled
IPv6 Forwarding: Disabled
IPv6 MC Forwarding: Disabled
IPv6: None
STPD: s0(Disabled)
Protocol: Match all unfiltered protocols
Loopback: Disabled
NetLogin: Disabled
OpenFlow: Disabled
TRILL: Disabled
QosProfile: None configured
Flood Rate Limit QosProfile: None configured
Ports: 15. (Number of active ports=15)
Tag: *5H, *9H, *11H, *13H, *14H, *16H, *17H,
*20H, *21H, *22H, *23H, *24H

None of this made any difference. Is there any way to forward the packets without the vlan tag?

This command:
# enable mirror lavb to port 1

Produces this output:
WARNING: This command will remove VLAN membership from the monitor port.
Do you want to continue? (y/N) Yes

Should I be concerned about it at all?

Regards
Leon