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Thursday, September 19, 2013

Cisco 4948 Running Configuration


Is there a running configuration sample of Cisco 4948 Switch . Need to know the interface numbering, specifically of the SFP ports.

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:-


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
!

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