Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Nexus7k and CFS

Hi,

I have here two Nexus7k chassis and I want to make use of the CFS feature. As far as I understood, it is using multicast for synchronising the configuration on both chassis.

Both SUP management interfaces are connected to an old 3550 rackswitch and provide out-of-band management.

Q1: Do I now additionally need to configure PIM or IGMP on the rackswitch in order to get CFS working properly?

Q2: Shouldn't I see both peers on the output below if everything is working right?

SwitchB# sh cfs peers name ntp

Scope      : Physical-fc-ip

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

Switch WWN              IP Address

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

20:00:00:26:98:09:7f:41 <ip omitted>                           [Local]

Total number of entries = 1

SwitchB# sh cfs status

Distribution : Enabled

Distribution over IP : Disabled

IPv4 multicast address : 239.255.70.83

IPv6 multicast address : ff15::efff:4653

Distribution over Ethernet : Enabled

SwitchB#

SwitchB# sh run | sec ntp

ip access-list copp-system-acl-ntp

  10 permit udp any any eq ntp

  10 permit udp any any eq ntp

  20 permit udp any eq ntp any

ipv6 access-list copp-system-acl-ntp6

  10 permit udp any any eq ntp

  10 permit udp any any eq ntp

  20 permit udp any eq ntp any

  match access-group name copp-system-acl-ntp

  match access-group name copp-system-acl-ntp6

ntp distribute

ntp server <ip omitted> use-vrf management

ntp server <ip omitted> use-vrf management

ntp commit

SwitchB#

Your help is very welcome!

cheers

phil

Everyone's tags (3)
1 REPLY
Cisco Employee

Nexus7k and CFS

Hi Philipp

You should see your peer in the output of "sh cfs peers"

This address will help you:

http://docwiki.cisco.com/wiki/Cisco_Nexus_7000_Series_NX-OS_Troubleshooting_Guide_--_Troubleshooting_CFS

HTH

Alex

512
Views
5
Helpful
1
Replies