[c-nsp] L2 Link Failover

[Brian Turnbow]

>But this handshake is done at the time of beginging when PORTCHANNEL
COMES
>up. ONce etherchannel is up , link are brought out of the etherchannel
when
>physical interface goes down.

Actually there are periodic packets in lcap, depending on what you are
using they can be configured.
IIRC 30 seconds is the default.

Brian



On Wed, Mar 31, 2010 at 6:00 PM, Tim Vollebregt
<t.vollebregt at leaseweb.com>wrote:

> Hi,
>
> I assume you are using the channel-group mode on mode right now, when
the
> physical is up your switch will balance packets.
>
> You should try using the channel-group mode active (LACP), as there is
an
> handshake in the LACP protocol. When there is no end-to-end
connectivity,
> and the handshake doesn't succeed it will remove the port from the
LACP
> bundle.
>
> Regards,
>
> Tim
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:
> cisco-nsp-bounces at puck.nether.net] On Behalf Of jack daniels
> Sent: woensdag, 31 maart, 2010 14:10
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] L2 Link Failover
>
> Hi guys,
>
> I'm facing a solution challage , appriaciate if you guys can help
>
>
> PC1---(VLAN 2)SW1-----------------METRO ETHERNET Link
> 1 ----------------------------------SW2 (VLAN2)---PC2
>                         |---------------------Metro ETHERNET LINK 2
> ---------------------------|
>
>
>
> I have L2 extended LAN between SW1 and SW2 across Metro ethernet
network
> from SP.
>
> I have CONFIGURED ETHERCHANNEL using both LINKS
>
> But issue is when in between my link 1 or my link 2 goes down , BUT My
> links
> in PORTCHANNEL are UP. SO traffic is blackholed.
>
> Please advise
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