04-02-2010 03:11 AM - edited 03-06-2019 10:26 AM
Hello !
If anyone over here can post a running configuration sample of Cisco 4948 Switch.
I need to know the interface numbering, specifically of the SFP ports.
Thanks
Zeeshan Sanaullah
Solved! Go to Solution.
04-02-2010 03:42 AM
Hi Zeeshan,
Hopefully this is the information that you are looking for. Essentially there are 52 physical interfaces on the 4948, however the last 8 interfaces are still numbered the same gigabit 1/45 - 1/48 and are simply configured as either RJ45 or SFP. Please take a look at the following guide, you will see that you simply have to specify the media-type under the interface:-
"The interface configuration mode command media-type sfp|rj45 can be used to configure the media type for these ports in the switch software and determines whether the SFP or the RJ-45 connector is used. The default is SFP." Taken from this link:-
http://www.cisco.com/en/US/docs/switches/lan/catalyst4900/4948/05modcfg.html
Regards
Allan.
Hope this helps, pls rate helpful posts.
04-02-2010 05:01 AM
Hi Zeeshan,
The interface number is as follows, these are simply configured as host ports with speed and duplex fixed or left to auto. Whereas Gigabit1/45-1/48 would typically be your SFP Trunk uplinks to your distribution or core layer using single interface or bundled as port-channel:-
!
vlan 2
name Vlan2
!
vlan 3
name Vlan3
!
vlan 4
name Vlan4
!
vlan 5
name Vlan5
!
vlan 6
name Vlan6
!
vlan 7
name Vlan7
!
vlan 8
name Vlan8
!
vlan 9
name Vlan9
!
vlan 10
name Vlan10
!
interface GigabitEthernet1/1
switchport access vlan
speed 1000
duplex full
spanning-tree portfast
spanning-tree bpduguard enable
.
.
interface GigabitEthernet1/44
switchport access vlan
speed 1000
duplex full
spanning-tree portfast
spanning-tree bpduguard enable>
.
.
interface GigabitEthernet1/45
description Link to Core Switch A
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 1 mode desirable non-silent
!
interface GigabitEthernet1/46
description Link to Core Switch A
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 1 mode desirable non-silent
!
interface GigabitEthernet1/47
description Link to Core Switch B
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 2 mode desirable non-silent
!
interface GigabitEthernet1/48
description Link to Core Switch B
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 2 mode desirable non-silent
!
interface Vlan10
ip address 192.168.1.1 255.255.255.0
!
ip default-gateway 192.168.1.254
!
Regards
Allan.
Hope this helps, pls rate helpful posts.
04-02-2010 03:42 AM
Hi Zeeshan,
Hopefully this is the information that you are looking for. Essentially there are 52 physical interfaces on the 4948, however the last 8 interfaces are still numbered the same gigabit 1/45 - 1/48 and are simply configured as either RJ45 or SFP. Please take a look at the following guide, you will see that you simply have to specify the media-type under the interface:-
"The interface configuration mode command media-type sfp|rj45 can be used to configure the media type for these ports in the switch software and determines whether the SFP or the RJ-45 connector is used. The default is SFP." Taken from this link:-
http://www.cisco.com/en/US/docs/switches/lan/catalyst4900/4948/05modcfg.html
Regards
Allan.
Hope this helps, pls rate helpful posts.
04-02-2010 04:40 AM
Allan,
Thanks. I got what I was looking for. One more thing about interface numbering.
Is it Interface Gigabitethernet 0/1 or Gigabitethernet 1/1 for ports on 4948.
Actually I need to develop Configuration templates for this switch but does not physically have the switch right now. If you have this switch then please post a sample running configuration
Thanks
Zeeshan Sanaullah
04-02-2010 05:01 AM
Hi Zeeshan,
The interface number is as follows, these are simply configured as host ports with speed and duplex fixed or left to auto. Whereas Gigabit1/45-1/48 would typically be your SFP Trunk uplinks to your distribution or core layer using single interface or bundled as port-channel:-
!
vlan 2
name Vlan2
!
vlan 3
name Vlan3
!
vlan 4
name Vlan4
!
vlan 5
name Vlan5
!
vlan 6
name Vlan6
!
vlan 7
name Vlan7
!
vlan 8
name Vlan8
!
vlan 9
name Vlan9
!
vlan 10
name Vlan10
!
interface GigabitEthernet1/1
switchport access vlan
speed 1000
duplex full
spanning-tree portfast
spanning-tree bpduguard enable
.
.
interface GigabitEthernet1/44
switchport access vlan
speed 1000
duplex full
spanning-tree portfast
spanning-tree bpduguard enable>
.
.
interface GigabitEthernet1/45
description Link to Core Switch A
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 1 mode desirable non-silent
!
interface GigabitEthernet1/46
description Link to Core Switch A
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 1 mode desirable non-silent
!
interface GigabitEthernet1/47
description Link to Core Switch B
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 2 mode desirable non-silent
!
interface GigabitEthernet1/48
description Link to Core Switch B
switchport trunk encapsulation dot1q
switchport trunk native vlan 1
switchport trunk allowed vlan 2-10
switchport mode trunk
channel-group 2 mode desirable non-silent
!
interface Vlan10
ip address 192.168.1.1 255.255.255.0
!
ip default-gateway 192.168.1.254
!
Regards
Allan.
Hope this helps, pls rate helpful posts.
06-04-2010 12:24 PM
It worked for me, too. Thanks.
09-19-2013 05:47 PM
Are the SFP's numbered this way on the 4948e? I could not locate a picture with a high enough resolution, to see the numbering on the ports.
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