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892 and Catalyst 2960 extend LAN over sfp fiber

jeff
Level 1
Level 1

Hello,

I need to extend the LAN on the 892 to the Catalyst switch via the fiber sfp modules in each unit.  I enabled the GigabitEthernet0 port on the 892 and set the medi-type to sfp.  What do I need to do to make that port part of the inside network?

I will post configs of both devices if neccesary; I guess I was hoping it would just plug and play!

Thanks!

5 Replies 5

Robert Falconer
Level 1
Level 1

Yes, post the configs please.

Router config below - it appears that the SFP slot on the 892 is for WAN only?  If I try to set switchport mode access on that port, it gives invalid command.

ip dhcp excluded-address 10.10.10.1

!

ip dhcp pool ccp-pool

import all

network 10.10.10.0 255.255.255.248

default-router 10.10.10.1

dns-server nnn.nnn.nnn.nnn nnn.nnn.nnn.nnn

lease 0 2

!

interface BRI0

no ip address

encapsulation hdlc

shutdown

isdn termination multidrop

!

interface FastEthernet0

no ip address

!

interface FastEthernet1

no ip address

!

interface FastEthernet2

no ip address

!

interface FastEthernet3

no ip address

!

interface FastEthernet4

no ip address

!

interface FastEthernet5

no ip address

!

interface FastEthernet6

no ip address

!

interface FastEthernet7

no ip address

!

interface FastEthernet8

ip address nnn.nnn.nnn.nnn 255.255.255.252

ip access-group 101 in

ip nat outside

ip virtual-reassembly in

duplex auto

speed auto

!

interface GigabitEthernet0

no ip address

duplex half

speed 100

media-type sfp

!

interface Vlan1

description $ETH_LAN$

ip address 10.10.10.1 255.255.255.248

ip nat inside

ip virtual-reassembly in

ip tcp adjust-mss 1452

!

ip forward-protocol nd

ip http server

ip http access-class 23

ip http authentication local

ip http secure-server

ip http timeout-policy idle 60 life 86400 requests 10000

!

!

ip nat inside source list 199 interface FastEthernet8 overload

ip route 0.0.0.0 0.0.0.0 nnn.nnn.nnn.nnn

!

access-list 101 permit tcp any any established

access-list 199 permit ip any any

Does the command "switchport" work to enable it for layer 2? What is the show interface details for that interface? 892 is a router correct? A router doesn't carry vlans.

What are you trying to accomplish? Router on a stick?

I am able to use the switchport command on the other interfaces (Fa0-7), but not on Gi0.  The 892 is a combination router/switch among other things.  I'm trying to use the sfp port which I have inserted a fiber connector to extend the LAN to a switch in a remote location.  Is there another way to use the Gi0 interface to pass traffic other than switchport?

I am going to say, just from reading the product details, that the Gi interface is WAN only which means you need to route your traffic. This would make sense since its a SOHO type router/switch.

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