ASR 1001X Vlan setting with etherchannel

[Gerard Roy]

I need to connect two separate ASR1001-X to 7010's. I need port channels Layer2 from the ASR's to the 7k's. I am told and as I understand it, "we are talking to a pair of 7k’s on a vdc with no SVI’s". Here is what I have. Can't pass traffic. I have tried multiple different combinations but no success. I do not have access to the 7k's. Any ideas?

interface Port-channel10
 description *** WAN Etherchannel Interface ***
 ip address 198.x.x.x 255.255.x.x
 negotiation auto
!
interface Port-channel10.43
 encapsulation dot1Q 43 primary GigabitEthernet0/0/0 secondary GigabitEthernet0/0/1
!
interface Port-channel20
 description *** LAN Etherchannel Interface ***
 ip address 172.25.29.196 255.255.254.0
 negotiation auto
!
interface Port-channel20.29
 encapsulation dot1Q 29 primary GigabitEthernet0/0/2 secondary GigabitEthernet0/0/3
!
interface GigabitEthernet0/0/0
 no ip address
 negotiation auto
 channel-group 10
!
interface GigabitEthernet0/0/1
 no ip address
 negotiation auto
 channel-group 10
!
interface GigabitEthernet0/0/2
 no ip address
 negotiation auto
 channel-group 20
!
interface GigabitEthernet0/0/3
 no ip address
 negotiation auto
 channel-group 20

[Jon Marshall]

Are the etherchannels showing as up.

If there are no SVIs on the N7Ks then I'm not sure how anything is meant to work ie. your etherchannels are L3 on your router but you say they are L2 to the N7Ks.

But the N7Ks would need L3 interfaces (whether SVIs or routed ports as on your router) in the same IP subnet for it to work.

Edit - unless the L3 end is on the other side of the N7Ks on other L3 devices ?

Jon

[Gerard Roy]

L3 end was on other side :) Here is the correct config, Thanks Jon!

interface Port-channel10
 no ip address
 negotiation auto
!
interface Port-channel10.43
 description *** WAN Etherchannel Interface ***
 encapsulation dot1Q 43 primary GigabitEthernet0/0/0 secondary GigabitEthernet0/0/1
 ip address 198.136.x.x 255.255.x.x
!
interface Port-channel20
 no ip address
 negotiation auto
!
interface Port-channel20.29
 description *** LAN Etherchannel Interface ***
 encapsulation dot1Q 29 primary GigabitEthernet0/0/2 secondary GigabitEthernet0/0/3
 ip address 172.25.29.196 255.255.254.0
!
interface GigabitEthernet0/0/0
 description *** C1ATX-CS02ETH1/4 ***
 no ip address
 negotiation auto
 channel-group 10 mode active
!
interface GigabitEthernet0/0/1
 description *** C1ATX-CS01ETH1/4 ***
 no ip address
 negotiation auto
 channel-group 10 mode active
!
interface GigabitEthernet0/0/2
 description *** C1ATX-CS02ETH7/44 ***
 no ip address
 negotiation auto
 channel-group 20 mode active
!
interface GigabitEthernet0/0/3
 description *** C1ATX-CS01ETH7/44 ***
 no ip address
 negotiation auto
 channel-group 20 mode active

[Jon Marshall]

Okay, haven't done this on ASRs but I found this doc (which you have probably seen)  which suggests you need an IP on the main port channel interface as well.

Although unfortunately it doesn't explain what that IP needs to be and even worse the actual diagrams which would be very helpful aren't displaying.

Vasili has also responded to your original post in WAN so you may want to link these two threads together.

He is basically asking the same questions I asked originally so it is probably worth getting him to look at this thread to see the latest configuration or post it in there.

He is very good so he may know a lot more about this than me.

I will keep digging in the meantime to see if I can find a better example.

Jon