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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

1 Reply 1

Oleksandr Nesterov
Cisco Employee
Cisco Employee

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

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