01-05-2014 03:59 AM - edited 03-01-2019 07:29 AM
I have 6unit C3750X-24P in stack configuration and I have been instructed to connect to Nexus 5K using SFP-10G-SR and via trunk port connection. Is this connection supported ? Can you provide a document linking to this type of connection or information that will tell this is supported.
Thanks,
Danny
01-05-2014 08:57 PM
Hello Dorsia,
Is it a pair of nexus 5K? If yes, the recomendation is to connect using vPC.
Anyway, this connection will be supported, is a simple connection.
This old thread can help you throught the configuration.
01-05-2014 09:34 PM
Hello Richard,
It is a pair of Nexus5k as Nexus5k-DC1 and Nexus5k-DC2.
I have single trunk port connection each of Nexus5k to c3750xStack.
My configuration is this:
4) On Nexus5K-DC1:
Allowed vlan 211-215 between Nexus5K-DC1 & Nexus5K-DC2 connectivity. This is
represented on port channel1
conf t
int po1
switchport trunk allowed vlan add 211-215
exit
#Connectivity of Nexus5k-DC1 via interface ethernet2/7 as
a trunk port to Cerner-SW1(c3750x) int TenG1/1/2
Create trunk Nexus5K-DC1_eth2/7 and allowed vlan 201, 211-215.
This interface connects to Cerner-SW1(c3750x) TenG1/1/2
For Nexus5k-DC1:
int eth2/7
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan add 201, 211-215
exit
5)On Nexus5K-DC2:
Allowed vlan 211-215 between NexusDC1 & NexusDC2 connectivity. This is represented
by int port-channel1
conf t
int po1
switchport trunk allowed vlan add 211-215
exit
#Connectivity of Nexus5k-DC2 via interface ethernet2/7 as
a trunk port to Cerner-Switch1(c3750x) int TenG6/1/2
Create trunk eth2/7 and allowed vlan 201, 211-215
This interface connects to Cerner-SW1(c3750x) TenG6/1/2
For Nexus5k-DC2:
int e2/7
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan add 201, 211-215
exit
6) On Cerner SW1(c3750x):
Configure int TenG1/1/2 to trunk port
Configure int TenG6/1/2 to trunk port
conf t
int TenG1/1/2
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan 201, 211-215
exit
int TenG6/1/2
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan 201, 211-215
exit
Will it be sufficient enough to be a trunk port connection only to each Nexus5k? or should I make configuration port channel on c3750x and port channel also to Nexus5k? So vPC is defined on interface portchannel not on physical interface?
01-06-2014 04:59 AM
Hello Dorsia,
I highly recommend to use vPC. In this configuration you are not using vpc and the spanning-tree will mess up you network design.
vPC is defined in the port-channel configuration, but before that you must create a vpc domain with a peer-link and a keep-alive link.
Richard
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