Distributed Trunking Configuration - KeepAlive

[Hobrim]

Hi all,

I'm trying to configure Distributed Trunking  with 5400zl and although I've been reading Management and Configuration guide, some articles about it and all the messages related, I'm still having some doubts about it, especially with keepalive

If I understand this document (http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay?javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken&javax.portlet.prp_ba847bafb2a2d782fcbb0710b053ce01=wsrp-navigationalState%3DdocId%253Demr_na-c03361117-1%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.tpst=ba847bafb2a2d782fcbb0710b053ce01&sp4ts.oid=1827663&ac.admitte... well, seems you have to use one VLAN exclusively for Peer-Keepalive (the vlan should not be configured in any othe ports, except the one used for keepalive). But the it suggest you have to configure an IP keepalive with a subnet froma a different VLAN. And that's my problem. Is that correct?

Or Can I, for example, use vlan 100 for keepalive, configure 192.168.100.1 and 192.168.100.2 as IP interfaces for vlan 100 and the use these IPs as destination in keepalive command?

distributed-trunking peer-keepalive destination 192.168.100.1/192.168.100.2

Thanks for your help! And have a nice Christmas!

[krillean]

Here you have an example of DT-lacp config:

SWITCH-A:

trunk E4 trk99 lacp
trunk E1 trk100 dt-lacp

switch-interconnect trk99
vlan 4092
name "LACP-heartbeat"
untagged A20
ip address 192.168.92.5 255.255.255.252
exit
distributed-trunking peer-keepalive vlan 4092
distributed-trunking peer-keepalive destination 192.168.92.6

SWITCH-B:

trunk E4 trk99 lacp
trunk E1 trk100 dt-lacp

switch-interconnect trk99
vlan 4092
name "LACP-heartbeat"
untagged A20
ip address 192.168.92.6 255.255.255.252
exit
distributed-trunking peer-keepalive vlan 4092
distributed-trunking peer-keepalive destination 192.168.92.5

After that you connect a cable from SWITCH-A interface E4 to SWITCH-B interface E4. This is the switch interconnect, in a stacked scenario this would be the stacking cable.

You also connect SWITCH-A interface A20 to SWITCH-B interface A20. This is the heartbeat connection so that if the interconnect goes down the swithces can still talk to eachother and decide who is "in charge".

Creating a lacp trunk for interface E4 is not neccesary, but if you do this you can easily add more interfaces to this connection making it redundant in itself and giving you more throughput.

Best Regards // Kristian Modess