Re: 3850 - How to Stack, need some help please.

paulbroomfield · ‎09-25-2013

Hi guys,

I'm rather new to this so I might be asking some silly questions.

We have just bought two 24port 3850, and I'd love to get them work as a stack. I've plugged in the stackwise, configured VLAN's and Syslog. I boot the master then the slave and it joins the stack fine.

My problem is that the master stays as active and the slave sits there waiting patiently doing nothing, ready for the master to die and for the slave to take over.

It'd be great to get these guys working together in a traditional stack.

After a bunch of reading I can't find the answer I'm looking for, I come across bits about Level 3 licensing, but I'm still not clear about what I actually have to do.

Please could someone point me in the right direction.

thanks!

Paul

Rasika Nayanajith · ‎09-25-2013

Below config guides should help you on this

1. http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/ha_stack_manager/configuration_guide/b_stk_32se_3850_cg_chapter_00.html

2. http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps12686/deployment_guide_c07-727067.html

HTH

Rasika

InayathUlla Sharieff · ‎09-25-2013

http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/ha_stack_manager/configuration_guide/b_stk_32se_3850_cg.pdf

HTH

Regards

Inayath

*Plz rate if this info is helpfull.

paulbroomfield · ‎09-25-2013

Hey guys,

Thanks for the links, I've read through that I don't know how many times

But I can't find the command for making both switches work together. Typing "show switch" just gives me the following.

Switch/Stack Mac Address : ece1.a9b8.e180 - Local Mac Address

Mac persistency wait time: Indefinite

H/W Current

Switch# Role Mac Address Priority Version State

------------------------------------------------------------

*1 Active ece1.a9b8.e180 1 V01 Ready

2 Standby 68bc.0c5b.8b00 1 V01 Ready

How can I turn the Standby into Active so both switches are working together?

thanks,

Bogdan Seweryn · ‎05-16-2014

have you found the solution to stack those two switches together as active/active?

Parvesh Paliwal · ‎09-25-2013

Can you please comeup with the IOS version you have ?

Second, A switch stack always has one active switch and one standby switch.

paulbroomfield · ‎09-25-2013

surething, here you go,

Switch Ports Model SW Version SW Image Mode

------ ----- ----- ---------- ---------- ----

1 32 WS-C3850-24T 03.02.02.SE cat3k_caa-universalk9 INSTALL

2 32 WS-C3850-24T 03.02.02.SE cat3k_caa-universalk9 INSTALL

re: switch stack always having one active and standby, is there no way of getting them to work together? I thought that was the point of the Stackwise480 cables?

thanks!

Parvesh Paliwal · ‎09-25-2013

Hope you got what you wanted ?

paulbroomfield · ‎09-25-2013

Hi Pavesh,

Thanks for getting back to me, but not quite yet

re: switch stack always having one active and standby, is there no way of getting them to work together? I thought that was the point of the Stackwise480 cables?

If these switches can't be configured to work together, rather than have one idle on standby, I think I might have bought the wrong ones.

thanks,

glen.grant · ‎09-25-2013

Are you sure it's not working ? If you do a show interface status do you see all the ports in both switches ? You will have an active and a standby , if the active dies the standby takes over the "master" for the entire stack . standby does not mean both switches are not working. It's a little different than the older 3750 stacks.

paulbroomfield · ‎09-25-2013

I do indeed see all the ports on both switches. I'll have another play with it.

So to confirm, these switches should be working together, but the Active/Standby part just means that the Standby will take over as master, should master die?

I'll have a play and let you know how I get on.

cheers,

paulbroomfield · ‎09-25-2013

Hey,

One more thing, if I plug a laptop into the slave switch, I can't ping anything thats plugged into the master switch, I was taking that as indiction they're not passing packets between each other.

cheers,

InayathUlla Sharieff · ‎09-25-2013

:-)

Parvesh Paliwal · ‎09-25-2013

can you please post the configs ?

paulbroomfield · ‎09-25-2013

hope this helps - I removed passwords, and by looking at this there could be some IP address issues...

thanks so much!

cisco-master#show configuration

Using 2447 out of 2097152 bytes, uncompressed size = 5614 bytes

!

! Last configuration change at 18:08:36 UTC Wed Sep 18 2013

!

version 15.0

no service pad

service timestamps debug uptime

service timestamps log datetime

no service password-encryption

service compress-config

service sequence-numbers

!

hostname cisco-master

!

boot-start-marker

boot-end-marker

!

vrf definition Mgmt-vrf

!

address-family ipv4

exit-address-family

!

address-family ipv6

exit-address-family

!

logging console emergencies

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

!

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

no aaa new-model

switch 1 provision ws-c3850-24t

switch 2 provision ws-c3850-24t

!

qos wireless-default-untrust

!

crypto pki trustpoint TP-self-signed-3573889528

enrollment selfsigned

subject-name cn=IOS-Self-Signed-Certificate-3573889528

revocation-check none

rsakeypair TP-self-signed-3573889528

!

crypto pki certificate chain TP-self-signed-3573889528

certificate self-signed 01 nvram:IOS-Self-Sig#1.cer

!

diagnostic bootup level minimal

identity policy webauth-global-inactive

inactivity-timer 3600

spanning-tree mode pvst

spanning-tree extend system-id

!

redundancy

mode sso

!

class-map match-any non-client-nrt-class

match non-client-nrt

!

interface GigabitEthernet0/0

vrf forwarding Mgmt-vrf

no ip address

shutdown

negotiation auto

!

interface GigabitEthernet1/0/1

switchport access vlan 2

spanning-tree portfast

!

interface GigabitEthernet1/0/2

switchport access vlan 2

!

interface GigabitEthernet1/0/3

switchport access vlan 2

!

interface GigabitEthernet1/0/4

switchport access vlan 2

!

interface GigabitEthernet1/0/5

switchport access vlan 2

!

interface GigabitEthernet1/0/6

switchport access vlan 2

!

interface GigabitEthernet1/0/7

switchport access vlan 2

!

interface GigabitEthernet1/0/8

switchport access vlan 2

!

interface GigabitEthernet1/0/9

switchport access vlan 2

!

interface GigabitEthernet1/0/10

switchport access vlan 2

!

interface GigabitEthernet1/0/11

switchport access vlan 2

!

interface GigabitEthernet1/0/12

switchport access vlan 2

!

interface GigabitEthernet1/0/13

switchport access vlan 3

!

interface GigabitEthernet1/0/14

switchport access vlan 3

!

interface GigabitEthernet1/0/15

switchport access vlan 3

!

interface GigabitEthernet1/0/16

switchport access vlan 3

!

interface GigabitEthernet1/0/17

switchport access vlan 3

!

interface GigabitEthernet1/0/18

switchport access vlan 3

!

interface GigabitEthernet1/0/19

switchport access vlan 3

!

interface GigabitEthernet1/0/20

switchport access vlan 3

!

interface GigabitEthernet1/0/21

switchport access vlan 3

!

interface GigabitEthernet1/0/22

switchport access vlan 3

!

interface GigabitEthernet1/0/23

switchport access vlan 3

!

interface GigabitEthernet1/0/24

switchport access vlan 3

!

interface GigabitEthernet1/1/1

!

interface GigabitEthernet1/1/2

!

interface GigabitEthernet1/1/3

!

interface GigabitEthernet1/1/4

!

interface TenGigabitEthernet1/1/1

!

interface TenGigabitEthernet1/1/2

!

interface TenGigabitEthernet1/1/3

!

interface TenGigabitEthernet1/1/4

!

interface GigabitEthernet2/0/1

!

interface GigabitEthernet2/0/2

!

interface GigabitEthernet2/0/3

!

interface GigabitEthernet2/0/4

!

interface GigabitEthernet2/0/5

!

interface GigabitEthernet2/0/6

!

interface GigabitEthernet2/0/7

!

interface GigabitEthernet2/0/8

!

interface GigabitEthernet2/0/9

!

interface GigabitEthernet2/0/10

!

interface GigabitEthernet2/0/11

!

interface GigabitEthernet2/0/12

!

interface GigabitEthernet2/0/13

!

interface GigabitEthernet2/0/14

!

interface GigabitEthernet2/0/15

!

interface GigabitEthernet2/0/16

!

interface GigabitEthernet2/0/17

!

interface GigabitEthernet2/0/18

!

interface GigabitEthernet2/0/19

!

interface GigabitEthernet2/0/20

!

interface GigabitEthernet2/0/21

!

interface GigabitEthernet2/0/22

!

interface GigabitEthernet2/0/23

!

interface GigabitEthernet2/0/24

!

interface GigabitEthernet2/1/1

!

interface GigabitEthernet2/1/2

!

interface GigabitEthernet2/1/3

!

interface GigabitEthernet2/1/4

!

interface TenGigabitEthernet2/1/1

!

interface TenGigabitEthernet2/1/2

!

interface TenGigabitEthernet2/1/3

!

interface TenGigabitEthernet2/1/4

!

interface Vlan1

no ip address

ip broadcast-address 192.168.15.255

!

interface Vlan2

ip address 192.168.0.251 255.255.255.0

!

interface Vlan3

no ip address

!

ip default-gateway 192.168.15.1

no ip http server

ip http authentication local

ip http secure-server

!

logging 192.168.15.51

logging 192.168.0.191

!

line con 0

exec-timeout 0 0

stopbits 1

line aux 0

stopbits 1

line vty 0 4

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

login

line vty 5 15

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

login

!

wsma agent exec

profile httplistener

profile httpslistener

wsma agent config

profile httplistener

profile httpslistener

wsma agent filesys

profile httplistener

profile httpslistener

wsma agent notify

profile httplistener

profile httpslistener

!

wsma profile listener httplistener

transport http

!

wsma profile listener httpslistener

transport https

ap dot11 24ghz rrm channel dca 1

ap dot11 24ghz rrm channel dca 6

ap dot11 24ghz rrm channel dca 11

ap dot11 5ghz rrm channel dca 36

ap dot11 5ghz rrm channel dca 40

ap dot11 5ghz rrm channel dca 44

ap dot11 5ghz rrm channel dca 48

ap dot11 5ghz rrm channel dca 52

ap dot11 5ghz rrm channel dca 56

ap dot11 5ghz rrm channel dca 60

ap dot11 5ghz rrm channel dca 64

ap dot11 5ghz rrm channel dca 149

ap dot11 5ghz rrm channel dca 153

ap dot11 5ghz rrm channel dca 157

ap dot11 5ghz rrm channel dca 161

ap group default-group

end