Need help about etherchannel and vlan configuration

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Jun 7th, 2010
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Hi all,


I had a 2821 cisco router with a lot of vlans on a same interface. This is a Wan router, each vlan is connected to a trunk to my ISP and directly connected to a SDSL oneacces ONE60 modem. I want to replace 2 one 60 in the same location by a 1801 router with 2 WIC-SHDSL-V2 card. Each car can support 4MBit/s on 2 pairs. I want to do etherchannel between vlan 0/3/1.501 and 0/3/1.502 on my 2821 wan router and on this other side between the 2 WIC to obtain a 8MBit/s throuput.


I try to do :


interface Port-channel2
description VPN-2x4MBit/s
ip address 192.168.83.1 255.255.255.0
duplex full
hold-queue 0 in


A part of my conf contains :


interface FastEthernet0/3/1.501
description SDSL-4M-VPN-Lien01
encapsulation dot1Q 501
!
interface FastEthernet0/3/1.502
description SDSL-4M-VPN-Lien02
encapsulation dot1Q 502


But if I try to add the commande to one of my vlan interface : channel-group 2 mode active


I had channel-group2 on all my vlan shared the same interface.


Do you see an issue ?


Best Regards.


David.

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davidgildas Tue, 06/08/2010 - 03:59
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Ok,


But that's not solve my problem to obtain a best throughput.


Perhaps I don't ask the good qestions. Also, this is my real problem :


My network had a 2821 cisco with a collected SDSL interface (each SDSL is associated to one vlan).


My ISP deliver each link ATM to a specific VLAN on the same trunk interface. I had at this time more than 20 VLANS.


My ISP can supply only 2 wires on SDSL link that provides a throughput of 4MBit/s max


For one client I want to build a bonding between 2 SDSL card to deliver a 8M link. I'll buy a 1841 with 2 WIC-SHDSL-V2 to do that.


For 2 vlans (for example fast 0/3/0.501 and 0/3/0.502) I want to build an agregated link to obtain a throughput of 8MBit/s ATM for my client.


Do you know how I need to process on my cisco 2821 to agregated this 2 vlans ?


Do I need to use bridge interface ?


Also, an other question is it the same process in the CPE 1841 ?


Thanks for your help.



The schema is this :


                                               __________
                                              |                 |
modem 1801 WIC-1 ----------------| dslam/LAC|------------------ LNS/2801
                    WIC-2 ---------------|                 |                   2vlans 501 and 502
                                             |__________|

David.

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