SWITCH TRUNKS

[verofei]

Hi,

I have 3 switches , 1 HP5308 and 2 A5500 SI .

How can i  trunk them ? I'm used to the old trunk configurations which have changed on the A5500 Si series.

Any kind of info is appreciated .

Thanks

P.S. This thread has been moved from Switches, Hubs, Modems (Legacy ITRC forum) toComware-Based. - Hp Forum Moderator

[Fredrik Lönnman]

On the A5500 its called bridge-aggregation.

[verofei]

Hi ,

So the config would be so

<Switch-5500A> system-view
[Switch-5500A]interface bridge-aggregation 1 (connection to Switch-5500B)
[Switch-5500A-Bridge-Aggregation1]link-aggregation mode static

[Switch-5500A-Bridge-Aggregation1]port link-type trunk

Switch-5500A-Bridge-Aggregation1]port trunk permit vlan 1 2

[Switch-5500A] interface gigabitEthernet1/0/1
[Switch-5500A-GigabitEthernet1/0/1] port link-aggregation group 1
[Switch-5500A] interface gigabitEthernet1/0/2
[Switch-5500A-GigabitEthernet1/0/1] port link-aggregation group 1

[Switch-5500A]interface bridge-aggregation 2 (connection to Switch-5308)
[Switch-5500A-Bridge-Aggregation2]link-aggregation mode static

[Switch-5500A-Bridge-Aggregation2]port link-type trunk

Switch-5500A-Bridge-Aggregation2]port trunk permit vlan 1 2

[Switch-5500A] interface gigabitEthernet1/0/3
[Switch-5500A-GigabitEthernet1/0/1] port link-aggregation group 2
[Switch-5500A] interface gigabitEthernet1/0/4
[Switch-5500A-GigabitEthernet1/0/1] port link-aggregation group 2
[Switch-5500A]link-aggregation load-sharing mode source-mac destination-mac


<Switch-5500B> system-view
[Switch-5500B]interface bridge-aggregation 1 (connection to Switch-5500A)
[Switch-5500B-Bridge-Aggregation1]link-aggregation mode static

[Switch-5500B-Bridge-Aggregation1]port link-type trunk

[Switch-5500B-Bridge-Aggregation1]port trunk permit vlan 1 2

[Switch-5500B] interface gigabitEthernet1/0/1
[Switch-5500B-GigabitEthernet1/0/1] port link-aggregation group 1
[Switch-5500B] interface gigabitEthernet1/0/2
[Switch-5500B-GigabitEthernet1/0/1] port link-aggregation group 1
[Switch-5500B]link-aggregation load-sharing mode source-mac destination-mac

[Switch-5500B]interface bridge-aggregation 3 (connection to Switch-5308)
[Switch-5500B-Bridge-Aggregation3]link-aggregation mode static
[Switch-5500A-Bridge-Aggregation3]port link-type trunk

Switch-5500B-Bridge-Aggregation3]port trunk permit vlan 1 2

[Switch-5500B] interface gigabitEthernet1/0/3
[Switch-5500B-GigabitEthernet1/0/1] port link-aggregation group 3
[Switch-5500B] interface gigabitEthernet1/0/4
[Switch-5500B-GigabitEthernet1/0/1] port link-aggregation group 3

Switch-5308#conf t
Switch-5308(config) trunk a1 trk2  trunk (connection to Switch-5500A)
Switch-5308(config) trunk a2 trk2 trunk
Switch-5308(config) trunk b1 trk3 trunk (connection to Switch-5500B)
Switch-5308(config) trunk b2 trk3 trunk

On the Switch-5308 under vlan port assigments i have the trk2 untagged on vlan 1 and tagged on   vlan2

What does mean with link-aggregation load-sharing mode source-mac destination-mac ?

Do i need to specify the port trunk pvid vlan vlan-id on the 5500 switches ?

Thanks,

Fei

[Fredrik Lönnman]

Looks good. link-aggregation load-sharing mode source-mac destination-mac means that it will load balance based on a hash of src and dst mac. Use the same hash mechanism on all switches if possible. 

You wont need to specify PVID 1, its default. 

[verofei]

Hi,

I did apply the configurations but the only thing is i had to reissue the port link-type trunk command otherwise the trunk was not coming up . It was a nice experience and hope to get more deep into networking . 

Thanks Fei

[verofei]

Hi ,
Could you tel me why the bridge aggregation interface turns into a hybrid and cannot accept trunk ? I tried all kinds of cinfiguration but after a while it turns into hybrid . What's the difference between a trunk and a hybrid link ?

kind regards,

[Fredrik Lönnman]

"after a while it turns to hybrid"? The switch reconfigurates itself? I somehow doubt that.

A hybrid is like a trunk that can have more than one untagged VLAN, so essentially it can be used as a trunk port.