03-12-2018 08:51 AM - edited 03-08-2019 02:13 PM
Hello Guys,
I have Cisco 4500 chassis switches, which is at default config and all the ports are in vlan1 (default) and Vlan 1 is configured with IP address.
The Trunk ports are SFP ports which is labelled Gigabitethernet1/3 and gigabitethernet1/5.
nothing is configured for these interfaces (like switch-port mode trunk, switch-port encapsulation dot1q)
Switches are working.
My questions:
1. why ports are not listed in command: sh interfaces trunk
2. How to configure trunk ports for SFP ports?
3. There are different privilege levels 0 -15, what does these level means, how they make diff ? (I see some times we use 0, 7 , 15- how these numbers make difference)
Thanks
Solved! Go to Solution.
03-12-2018 11:51 PM
Hi,
Q1: Is it good idea to setup all the switches as a layer 3 or only Core switches with L3. ?
Ans: It is highly recommended to have an only core or distribute switches in L3 mode (if you don't have any plan to use fully routing infrastructure).
Trunk port configuration:
interface gig 1/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan 41,10,12,9
switchport trunk native vlan <if nay>
no shut
Regards,
Deepak Kumar
03-12-2018 09:10 AM
Hi,
Q 1. why ports are not listed in command: sh interfaces trunk?
Ans: If there is no configuration then all ports will be L2 mode and without negotiation works as access mode. So that ports were not shown in the command output.
Q: 2. How to configure trunk ports for SFP ports?
Ans: you can configure same as an ethernet port. If there is dual port then you have chosen the media to type with a command "media type rj45" or "sfp"
Q There are different privilege levels 0 -15, what does these level means, how they make diff ? (I see some times we use 0, 7 , 15- how these numbers make difference)
Ans: How much privilege has been given to a user. there are total 16 levels. But level 0 and 15 are reserved (preconfigured) in the Cisco devices. If you want to give the different rights to users, first must configure the level privilege commands.
Regards,
Deepak Kumar
03-12-2018 11:29 AM
Hello Deepak,
Thanks for explaining.
Couple more questions:
1. I have two core switches 6504E and each 4506 switch is connected with two SFP ports each goes to one core switch . Can you please further elaborate how to configure Trunk ports? It would be great if you mention commands.
2. I want to use 6504E as redundant switches. My plan is that, I will Connect each 4506 switch with just one SFP port to First core switch. And then i will configure the First Hop redundancy Protocol (HSRP or VRRP).
Please advice I never work on SFP ports.
Thanks
03-12-2018 12:23 PM
One more Confusion I have is that :
Is it good idea to setup all the switches as a layer 3 or only Core switches with L3. ?
Usually in my previous organisation , I just setup core switch as a Layer 3 and configure SVI and static routing and then all access layer switches as L2.
Please explain me which is best option to do.
03-12-2018 11:51 PM
Hi,
Q1: Is it good idea to setup all the switches as a layer 3 or only Core switches with L3. ?
Ans: It is highly recommended to have an only core or distribute switches in L3 mode (if you don't have any plan to use fully routing infrastructure).
Trunk port configuration:
interface gig 1/0/3
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan 41,10,12,9
switchport trunk native vlan <if nay>
no shut
Regards,
Deepak Kumar
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