04-19-2012 12:27 PM - edited 03-07-2019 06:14 AM
Hello,
We have some new 3750E switches in our network and out-of-band management ports on them. I am not sure exactly how these ports are supposed to be used in a network setup for desired functionality. Right now I have some 2960 switches behind this switch and if I enable out-of-band management port on the 3750 switch then the 2960 switches behind them cannot send management vlan traffic across to the default gateway router 192.168.0.1. Below is example configuration of what I have.
2960SW<-->3750SW<-->Gateway router
3750 switch
int fa0
description OOB Mgmt
ip address 192.168.1.71 255.255.255.0
no shut
2960 switch
int vlan 300
mgmt vlan
ip address 192.168.1.60 255.255.255.0
ip defult-gateway 192.168.0.1
Gateway router
int vlan 300
ip address 192.168.0.1 255.255.255.0
no shut
Thank you.
Solved! Go to Solution.
04-26-2012 08:18 AM
You do not have layer 2 conectivity.
Vlan 300 is present on 2960 and 3524 but the issue is between 3750 and 3524, but because you are using a routed port on 3750 the frames for this vlan stop here
"The Ethernet management port (FastEthernet0) is a dedicated routed interface used for out-of-band switch managementservices such as Telnet, Secure Shell (SSH) Protocol, Trivial File Transfer Protocol (TFTP), and SNMP."
You will need to connect the 3524 to the 2960, both ports as access vlan 300.
Dan
04-19-2012 03:32 PM
Hi,
What does the OOB on the 3750 connect to physically? Also the OOB is not in the same subnet as the rest of the network.
192.168.1/24
192.168.0/24
HTH
04-20-2012 09:00 AM
Hello Reza,
Thanks for the response. There was a typo in my post above. They all are in the same network. Below is a detailed setup of how they are connected and configuration on each.
C2960 (gi0/2)<-->gi(4/0/20) 3750E (Fas0)<-->(Fas0/12) 3524XL (Fas0/24)<-->(Fas2/8) 3745Router
C2960
interface GigabitEthernet0/2
switchport mode trunk
interface Vlan300
ip address 192.168.1.60 255.255.255.0
no ip route-cache
ip default-gateway 192.168.1.1
3750E
interface FastEthernet0
description OOB Management port
ip address 192.168.1.71 255.255.255.0
interface GigabitEthernet4/0/20
switchport trunk encapsulation dot1q
switchport mode trunk
end
3524XL
interface FastEthernet0/24
no shut
interface VLAN300
ip address 192.168.1.120 255.255.255.0
no ip directed-broadcast
no ip route-cache
interface FastEthernet0/12
no shut
3745Router
interface FastEthernet2/8
switchport access vlan 300
no ip address
speed 100
interface Vlan300
ip address 192.168.1.4 255.255.255.0
standby ip 192.168.1.1
standby priority 110
standby preempt delay reload 120
standby name XXXX
Thank you.
04-26-2012 08:18 AM
You do not have layer 2 conectivity.
Vlan 300 is present on 2960 and 3524 but the issue is between 3750 and 3524, but because you are using a routed port on 3750 the frames for this vlan stop here
"The Ethernet management port (FastEthernet0) is a dedicated routed interface used for out-of-band switch managementservices such as Telnet, Secure Shell (SSH) Protocol, Trivial File Transfer Protocol (TFTP), and SNMP."
You will need to connect the 3524 to the 2960, both ports as access vlan 300.
Dan
04-26-2012 12:22 PM
Thanks Dan!
10-04-2015 12:05 PM
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