Hello folks,
I have two switches connected via LAG 1 (SG300-52; gi47 and gi48 in LACP LAG ---> SG350; XG1/9 and XG1/10 in LACP LAG1).
I have two vlans on the switches (vlan 10 and vlan 11) in addition to native vlan 1. I have dual nic workstations (live on SG350) and servers (live on SG300) with one which communicate using jumbo frames.
Our software runs successfully between two workstations on the SG350, and between two servers on the SG300. Running the software from the workstation works properly when a server is the receiver. However, running from a server to the workstation doesn't work and frames are dropped.
Using "ping -D -s 8184" shows that jumbo packets work.
From the SG300-52:
================
#sho ip igmp snooping mrouter interface 11
Vlan Dynamic Static Forbidden
----- -------------------- -------------------- --------------------
11
# From the sho run...
<snip>
port jumbo-frame
bridge multicast filtering
......
ip igmp snooping
ip igmp snooping vlan 1
ip igmp snooping vlan 1 immediate-leave
ip igmp snooping vlan 11
ip igmp snooping vlan 11 immediate-leave
ip igmp snooping vlan 1 querier
ip igmp snooping vlan 11 querier
#sho interface Port-channel1
Load balancing: src-dst-mac.
Gathering information...
Channel Ports
------- -----
Po1 Active: gi47-48
==================
From the SG350:
================
#sho ip igmp snooping mrouter interface 11
Vlan Dynamic Static Forbidden
----- -------------------- -------------------- --------------------
11 Po1
# From the sho run:
<snip>
..
port jumbo-frame
bridge multicast filtering
....
interface vlan 11
ip igmp version 2
!
.....
ip igmp snooping
ip igmp snooping vlan 1
ip igmp snooping vlan 1 immediate-leave
ip igmp snooping vlan 11
ip igmp snooping vlan 11 immediate-leave
no ip igmp snooping querier
no ip igmp snooping vlan 1 querier election
ip igmp snooping vlan 11 querier
#sho interface Port-channel1
Load balancing: src-dst-mac.
Gathering information...
Channel Ports
------- -----
Po1 Active: te1/0/9-10
I'm at a loss to explain why the software is run from a workstation on the SG350, a server on the SG300 receives the packet properly. However,
when the software is run from the server on the SG300, the workstation gets only partial packets and it looks like the switch drops them.
I'm not that familiar with the business switches, but I believe the LAGS are configured properly:
From the SG300:
#sho vlan
Created by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, V-Voice VLAN
Vlan Name Tagged Ports UnTagged Ports Created by
---- ----------------- ------------------ ------------------ ----------------
1 1 gi22,gi41-43,Po1-8 V
10 first Po1 gi1-21,gi24-40 S
11 second Po1 gi44-46,gi47-gi48 S
From the SG350:
sho vlan
Created by: D-Default, S-Static, G-GVRP, R-Radius Assigned VLAN, V-Voice
VLAN
Vlan Name Tagged Ports UnTagged Ports Createdby
---- ----------------- ------------------ ----------------------------------
1 1 te1/0/1,te1/0/5-6, DV
te1/0/12-52,
te2/0/1-52,
te3/0/1-52,
te4/0/1-52,Po1-8
10 first Po1 te1/0/2-4 S
11 second Po1 te1/0/7-8,tr2/0/9-te1/0/10 S
I'm grateful for any suggestion on how to debug this issue.
Thanks,
