No TCP between hosts, ping works fine

I have ESXi installed on a Dell C524-TY with two NIC 5 and you have set up several Solaris 10 upgrade 10 physical hosts and VIRTUAL LAN interfaces. There are two Cisco switches between the NETWORK card with the installation of trunk between them and the server ports. The physical interfaces have connectivity through the switches VLAN 1, ssh, ping, etc. Interfaces VLANS are configured for VLAN 2000 and I cannot ping between them, no problem, but ssh or any kind of TCP connection just times out. I can also ping between installation interface VLAN (SVI) on the switches and telnet from one switch to another, and ping the virtual servers. When I run a snoop I see TCP request to arrive but they come from different IP addresses, which is attributed.

On the receiving host:

e1000g2000001: flags = 201000843 < UP, STREAM, RUN, MULTICAST, IPv4, CoS > mtu 1500 index 3

INET 10.187.10.1 netmask ffffff00 broadcast 10.187.10.255

ether 0:c:29:c1:5:96

[root@amboycsm01] (17/07/13-07:53 AM US / Pacific) / [root]

--> snoop d e1000g2000001 tcp

E1000g2000001 of the device (promiscuous mode) using

10.187.53.162-> amboycsm01-s1 TCP D = 22 S = 35398 Syn seq = 1284035143, Len = 0 Win = 49640 Options = < mss 1460, nop, wscale 0, nop, nop, sackOK >

10.187.53.161-> amboycsm01-s1 TCP D = 22 S = 35398 Syn seq = 1284035143, Len = 0 Win = 49640 Options = < mss 1460, nop, wscale 0, nop, nop, sackOK >

10.187.53.160-> amboycsm01-s1 TCP D = 22 S = 35398 Syn seq = 1284035143, Len = 0 Win = 49640 Options = < mss 1460, nop, wscale 0, nop, nop, sackOK >

Starting from the host of the show:

e1000g2000000: flags = 201100843 < UP, BROADCAST, MULTICAST, ROUTER, RUNNING, IPv4, CoS > mtu 1500 index 2

INET 10.187.10.9 netmask ffffff00 broadcast 10.187.10.255

ether 0:c:29:30:c0:a4

bash - 3.2 # ping 10.187.10.1

10.187.10.1 is alive

bash - 3.2 # ssh 10.187.10.1

^ C

On the ESXi server, I have a group configuration of virtual ports for each interface that allows all the VLAN (VLAN ID: ALL (4095)).

Here is the relevant switch configuration:

SW1

interface FastEthernet0/1

Description == servers VMWare * DON'T CHANGE *.

switchport trunk encapsulation dot1q

switchport mode trunk

spanning tree portfast

!

interface FastEthernet0/24

Description ///TRUNK SW2.

switchport trunk encapsulation dot1q

switchport mode trunk

SW2

interface FastEthernet0/1

Description ///TRUNK LAB.

switchport trunk encapsulation dot1q

switchport mode trunk

!

interface FastEthernet0/19

Description ///VM SERVER.

switchport trunk encapsulation dot1q

switchport mode trunk

spanning tree portfast

If anyone can help me with why my VLAN cannot establish a TCP connection, I'd be really grateful, I was pulling my hair out.

Thank you

Steve

We just lived this witch hunt.

Our fix was to use rather than e1000g0 vmxnet3 adapters.

Hope this helps

See you soon

Tags: VMware

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