LACP bundle-eth ASR 9000 and Extreme Black Diamond

[chartmann]

Hi all,

has anyone a working LACP port-channel between ASR and Black Diamond?

My config looks like this:

### IOS-XR ###
interface Bundle-Ether1
mtu 9216
vrf YYY
ipv4 mtu 2000
ipv4 address x.x.x.x 255.255.255.252

interface TenGigE0/0/0/0
bundle id 1 mode active

### BD ###
create vlan "NAME"
configure vlan NAME

configure ports 10:5 display-string IOS-XR

configure vlan NAME add ports 10:5 untagged
configure vlan NAME ipaddress x.x.x.y 255.255.255.252

enable sharing 10:5 grouping 10:5 algorithm address-based L3_L4 lacp

Wireshark says that Black Diamond sends Frames with 802.1q Tag Vlan 0.

I assume that "sharing" command from Black Diamond only counts for data, not for control plane.

My guess is that this mismatch between untagged from IOS-XR and tagged VLAN0 from BD causes this LACP issue.

Or any other ideas?

Cheers

Christian

[Philip D'Ath]

On the ASR, you can make it tag VLAN0 by setting the native VLAN to a VLAN that is not in use (does not exist).  This is an old Cisco trick for making a device tag all frames going out one particular port

[chartmann]

Thanks for reply. I heard of this for Catalyst Switches.

I've been trying with basic dot1q sub-IF but non of my configuration was making the ASR to send tagged frames for LACP.

Do you have a config example for IOS-XR?

[chartmann]

I was asking a Extreme Network pro and he told me, that this tagged frames are more likely related to the way of mirroring that the BD does.

And he told me, to use that command:

configure sharing 9:5 lacp system-priority 3

Now the bundle-eth is UP!

[arsonistmx]

This works for me:

configure sharing 47 lacp system-priority 47

The system-priority represent the ID, as in the cisco command.

bundle id 47 mode active

Now is working!

Thanks