sunhux
asked on
Configure stacking, bundling of ports for C3750X & etherchannel for VMware
2x WS-C3750X-48T Cisco switches stacking config & etherchannel config for VMware
Asked by: sunhux
Pls refer to EE thread id 27593251 where I described the BOM
list of items that I have ie:
2x WS-C3750X-48T-S Catalyst 3750X 48 Port Data IP Base
2x C3750X-48-IOS-S-E C3750X-48 IP Base to IP Services factory IOS Upgrade
2x Included: CAB-STACK-50CM Cisco StackWise 50CM Stacking Cable
16x GLC-SX-MM= 1000BASE-SX SFP transceiver module for MMF, 850-nm wavelength
I'll need to connect the above two units of WS-C3750X-48T-S (I suppose these
are distribution switches) to a pair of 6500 core switches, so I suppose the 16x
transceivers is distributed such that four pcs of the transceivers go to each of
the C3750X above & four pcs of the transceivers go to each of the 6500 switches
(as I was given 8 pcs of LC-LC fibre cables to link the pair of C3750X to the
pair of 6500 core switches together).
There's no VSS (Virtual Switching System?) between the pair of 6500 switches.
Q1:
I suppose I can't configure a bundle of 8 fibre connections but 2 pairs of 4
fibre connections since there's no VSS, right? So how does the configuration
on my C3750X's ports (that has a GLC-SX-MM transceiver inserted into it)
look like if I'm configuring 2 pairs of 4 fibre per pair? Is it like the following:
int giga 1/0/x
spanning-tree portfast
duplex full
speed gigabit (or auto-sense?)
Q2:
For stacking between the two C3750X, is it just a matter of joining them
together using stacking cable ie " connect sw1 stack1 to sw2 stack 2,
sw1 stack2 to sw2 stack 1" or on the C3750X switches, there's some
configuration needed or on the stacking ports some config is needed?
How do those configuration look like? Pls provide exact sample config
if any
Q3:
I'm setting up an ESX server which has multiple VMs in it. Will be
'bundling' or 'aggregating' four gigabit NIC ports on the ESX server
(IBM x3850 & x3650) to the switches. I suppose for the server,
2 NIC ports will connect to one C3750X switch while the other 2
NIC ports will connect to the other C3750X switch. I was told I'll
need to configure 'etherchannel' on the C3750X switches. Pls
provide me with the exact config. Does the four NIC ports
configured in such a way provide a total 4Gbps or it's just 2Gbps
(ie live/standby pair)? I was told the switch (or is it the server
hardware?) needs to support VMware's "VLAN tagging", so is
there any specific configuration on the C3750X to provide this
"VLAN tagging" ?
Asked by: sunhux
Pls refer to EE thread id 27593251 where I described the BOM
list of items that I have ie:
2x WS-C3750X-48T-S Catalyst 3750X 48 Port Data IP Base
2x C3750X-48-IOS-S-E C3750X-48 IP Base to IP Services factory IOS Upgrade
2x Included: CAB-STACK-50CM Cisco StackWise 50CM Stacking Cable
16x GLC-SX-MM= 1000BASE-SX SFP transceiver module for MMF, 850-nm wavelength
I'll need to connect the above two units of WS-C3750X-48T-S (I suppose these
are distribution switches) to a pair of 6500 core switches, so I suppose the 16x
transceivers is distributed such that four pcs of the transceivers go to each of
the C3750X above & four pcs of the transceivers go to each of the 6500 switches
(as I was given 8 pcs of LC-LC fibre cables to link the pair of C3750X to the
pair of 6500 core switches together).
There's no VSS (Virtual Switching System?) between the pair of 6500 switches.
Q1:
I suppose I can't configure a bundle of 8 fibre connections but 2 pairs of 4
fibre connections since there's no VSS, right? So how does the configuration
on my C3750X's ports (that has a GLC-SX-MM transceiver inserted into it)
look like if I'm configuring 2 pairs of 4 fibre per pair? Is it like the following:
int giga 1/0/x
spanning-tree portfast
duplex full
speed gigabit (or auto-sense?)
Q2:
For stacking between the two C3750X, is it just a matter of joining them
together using stacking cable ie " connect sw1 stack1 to sw2 stack 2,
sw1 stack2 to sw2 stack 1" or on the C3750X switches, there's some
configuration needed or on the stacking ports some config is needed?
How do those configuration look like? Pls provide exact sample config
if any
Q3:
I'm setting up an ESX server which has multiple VMs in it. Will be
'bundling' or 'aggregating' four gigabit NIC ports on the ESX server
(IBM x3850 & x3650) to the switches. I suppose for the server,
2 NIC ports will connect to one C3750X switch while the other 2
NIC ports will connect to the other C3750X switch. I was told I'll
need to configure 'etherchannel' on the C3750X switches. Pls
provide me with the exact config. Does the four NIC ports
configured in such a way provide a total 4Gbps or it's just 2Gbps
(ie live/standby pair)? I was told the switch (or is it the server
hardware?) needs to support VMware's "VLAN tagging", so is
there any specific configuration on the C3750X to provide this
"VLAN tagging" ?
ASKER CERTIFIED SOLUTION
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ASKER
Need to clarify the reply for Q1:
interf range G1/0/49-52 <== which physical ports on the 1st 3750X are these ports?
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode active
interf range G2/0/49-52 <== which physical ports on the 2nd 3750X are these ports?
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 2 mode active
For the 1st set of 4 fibre links, can we use 2 fibre links from the first 3750X switch
& the other 2 fibre links from the second 3750X switch?
interf range G1/0/49-52 <== which physical ports on the 1st 3750X are these ports?
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode active
interf range G2/0/49-52 <== which physical ports on the 2nd 3750X are these ports?
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 2 mode active
For the 1st set of 4 fibre links, can we use 2 fibre links from the first 3750X switch
& the other 2 fibre links from the second 3750X switch?
Just to answer your question above: in the older 3750 switches the uplink ports were called g1/049, g1/0/50, etc. Since I have not had any 3750x in my hands so far I assumed that Cisco did not change the numbering with the pluggable network modules in the 3750x. However this could be wrong. I you send a show int status i probably can tell you what interfaces I meant.
ASKER
Need to clarify further for VMware's etherchannel.
Suppose I have 2 ESX servers, each ESX server has
4 NIC ports connected to the pair of stacked switches.
So for each ESX server, do I create a separate "Port-Channel"
(say, I call them "Port-channel3" & "Port-channel4" for ESX3
& ESX4 servers) as shown below:
interface Port-channel3
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk native vlan 88
port-channel load-balance src-dst-ip
end
interface Port-channel4
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk native vlan 88
port-channel load-balance src-dst-ip
end
Then for each port on the switch that’s connected
& grouped for an ESX server, configure as:
interface GigabitEthernet 0/1, 0/2, 0/49, 0/50
switchport trunk encapsulation dot1q
switchport mode trunk
flowcontrol receive desired
channel-group 3 mode on
spanning-tree portfast trunk
spanning-tree bpdufilter enable
speed 1000M
duplex full
no shut
exit
interface GigabitEthernet 0/3, 0/4, 0/51, 0/52
switchport trunk encapsulation dot1q
switchport mode trunk
flowcontrol receive desired
channel-group 4 mode on
spanning-tree portfast trunk
spanning-tree bpdufilter enable
speed 1000M
duplex full
no shut
exit
Correct the configs above if I'm mistaken