I have a pair of SG500-28s stacked using 5G stackwise cables running firmware rev 1.4.1 in a remote datacenter. I have a number of application (WS2012R2) with quad port NICs (configured as NIC teams) which have their ports equally distributed across both physical switches of this logical switch stack.
On the switch side, each of the 8 physical server's 4 port connections distributed across the two physical switches are configured as trunked port channel configured to carry a handful of VLANs.
I am finding that any given two physical servers can't ping each other on the same VLAN. Each server can ping the respective interface VLAN IP on the switch yet the host system fail.
Configuration is as follows:
Physical server #1 (virtual Switch Mgmt i/f in host): 172.16.11.41/24
Physical server #2 (virtual Switch Mgmt i/f in host): 172.16.11.42/24
SwitchStack #show run int vlan 11
interface vlan 11
ip address 172.16.11.1 255.255.255.0
Physical server #1 switch config:
interface gigabitethernet1/1/1
no mdix
channel-group 1 mode auto
interface gigabitethernet1/1/2
no mdix
channel-group 1 mode auto
interface gigabitethernet2/1/1
no mdix
description HPv01
channel-group 1 mode auto
interface gigabitethernet2/1/2
no mdix
channel-group 1 mode auto
#show run int po1
interface Port-channel1
switchport trunk allowed vlan add 2-4,10-13
switchport trunk native vlan 99
Physical server #2 switch config:
interface gigabitethernet1/1/3
no mdix
channel-group 2 mode auto
interface gigabitethernet1/1/4
no mdix
channel-group 2 mode auto
interface gigabitethernet2/1/3
no mdix
channel-group 2 mode auto
interface gigabitethernet2/1/4
no mdix
channel-group 2 mode auto
interface Port-channel2
switchport trunk allowed vlan add 2-4,10-13
switchport trunk native vlan 99
#show int po1
Load balancing: src-dst-mac-ip.
Gathering information.....
Channel Ports
------- -----
Po1 Active: gi1/1/1-2,gi2/1/1-2
#show int po2
Load balancing: src-dst-mac-ip.
Gathering information.....
Channel Ports
------- -----
Po2 Active: gi1/1/3-4,gi2/1/3-4
SwitchStack#ping 172.16.11.41
Pinging 172.16.11.41 with 18 bytes of data:
18 bytes from 172.16.11.41: icmp_seq=1. time=0 ms
18 bytes from 172.16.11.41: icmp_seq=2. time=0 ms
18 bytes from 172.16.11.41: icmp_seq=3. time=0 ms
18 bytes from 172.16.11.41: icmp_seq=4. time=0 ms
----172.16.11.41 PING Statistics----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/0/0
Switchstack#ping 172.16.11.42
Pinging 172.16.11.42 with 18 bytes of data:
18 bytes from 172.16.11.42: icmp_seq=1. time=0 ms
18 bytes from 172.16.11.42: icmp_seq=2. time=0 ms
18 bytes from 172.16.11.42: icmp_seq=3. time=0 ms
18 bytes from 172.16.11.42: icmp_seq=4. time=0 ms
----172.16.11.42 PING Statistics----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/0/0
And of course the physical servers can ping 172.16.11.1 (Switch SVI). Yet the physical servers can't each other on that same VLAN (11).
What am I missing ??? I have done this configuration before on enterprise level C3750's and WS2012R2 hosts without issue so I think it must be something to do with these SG500 firmware and/or CLI config.
/wh
