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can HWIC-4ESW on Cisco 1841 be used for Metro E

The builthin interface is already used  for metro E
So can HWIC-4ESW on Cisco 1841 be used for Metro E as a another interface ?
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Anthony M
Asked:
Anthony M
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3 Solutions
 
JFrederick29Commented:
Sure, you would need to configure a VLAN for the Metro service and assign the interface for the Metro connection to the Metro VLAN.  Configure the Metro VLAN interface with the appropriate IP address, etc...
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Anthony MManagerAuthor Commented:
could you give me a brief example
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JFrederick29Commented:
vlan 100
name metro

int <switchport metro is connected to>
description metro
switchport access vlan 100

int vlan100
ip add x.x.x.x 255.255.255.252
no shut

I'm trying to confirm 100% whether the 4ESW can in fact do inter-VLAN routing.  It appears so but just checking further.  Do you have the module already or are you looking to purchase?
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Anthony MManagerAuthor Commented:
I am looking to purchase and this seems to be the only device that can work with the Ciso 1841
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JFrederick29Commented:
It appears to support inter-vlan routing (my example above) but if you are going to purchase this module, I would perhaps talk to Cisco directly to get a decisive answer so you don't end up purchasing a module that does you no good.  I see plenty of examples out there that talk about people doing inter-vlan routing on this module but the Cisco data sheet on the module makes me question it...

Alternatively, you can save the money and use your existing single interface if you have a trunk capable switch (Cisco 2900, 3500, etc...).  You can use 802.1Q trunking between the switch and router.  The one downside is both metro connections will use the same physical interface (logically separated) so both will share 100mbps.  If that isn't an issue, and you have a VLAN/802.1Q trunk capable switch handy...it's an option.
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JFrederick29Commented:
So, it looks like the HWIC module will work, especially since you will be using it for only a single connection/VLAN.
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Anthony MManagerAuthor Commented:
When the card is installed will i see the interfaces as in the snippet below
interface Ethernet2/0
 description Fibre Link to all  Locations
 ip address 132.1.1.1 255.255.0.0
 ip mask-reply
 ip directed-broadcast
 ip flow ingress
 ip nbar protocol-discovery
 full-duplex
 no cdp enable
!
interface Ethernet2/1
  no ip address
 ip mask-reply
 ip directed-broadcast
 shutdown
 full-duplex
 no cdp enable
 
!
interface Ethernet2/2
 no ip address
 ip mask-reply
 ip directed-broadcast
 shutdown
 half-duplex
 no cdp enable
!
interface Ethernet2/3
 no ip address
 ip mask-reply
 ip directed-broadcast
 shutdown
 half-duplex
 no cdp enable
!

Open in new window

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JFrederick29Commented:
Should look like this:

interface FastEthernet0/0/0   <--connect the metro connection here
!
interface FastEthernet0/0/1
!
interface FastEthernet0/0/2
!
interface FastEthernet0/0/3
!
interface Vlan1
ip address x.x.x.x 255.255.255.252    <--the IP for the Metro circuit

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Anthony MManagerAuthor Commented:
vlan 100
name metro

int FastEthernet0/0/0
description metro
switchport access vlan 100

int vlan100
ip add x.x.x.x 255.255.255.252
no shut

This is right?
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JFrederick29Commented:
Yes.  That should do it.  You might have to "no shut" the FastEthernet0/0/0 interface as well.  You may also have to set speed and duplex appropriately.
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Anthony MManagerAuthor Commented:
Thanks alot
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