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

Nexus 3064 Not Responding to ARP

Greetings,

We at times will see our wireless clients lose network access sporadically when accessing either the Internet or local servers on our network.  We have a pair of Nexus 3064 switches configured in a VPC providing all layer 3 services at this facility and everything works great except for our wireless users.  It doesn't appear to be an issue with our WLC, which is a Cisco WLC 5508 residing in a remote data center.

The solution is to ping either of the "Real" IP address on the SVIs of the Nexus switches, not the HSRP address.  Has anyone seen this before?  Here is a config snippet of the SVIs and VPC setup.

Primary Nexus 3064

interface Vlan20

  ip address 10.x.x.2/23

  ip verify unicast source reachable-via rx

  ip router eigrp 100

  ip passive-interface eigrp 100

  ip proxy-arp

  hsrp 20

    authentication md5 key-string h5rp1

    priority 200

    timers  1  3

    ip 10.x.x.1

  ip dhcp relay address 10.x.x.40

  no shutdown

  description WIRELESS

Secondary Nexus 3064

interface Vlan20

  ip address 10.x.x.3/23

  ip verify unicast source reachable-via rx

  ip router eigrp 100

  ip passive-interface eigrp 100

  ip proxy-arp

  hsrp 20

    authentication md5 key-string h5rp1

    priority 200

    timers  1  3

    ip 10.x.x.1

  ip dhcp relay address 10.x.x.40

  no shutdown

  description WIRELESS

VPC Configuration on the Primary

version 5.0(3)U2(2a)

feature vpc

vpc domain 1

  role priority 700

  peer-keepalive destination 10.10.1.2 source 10.10.1.1

  delay restore 300

  peer-gateway

  auto-recovery reload-delay 300

interface port-channel1

  vpc 2

interface port-channel510

  vpc 510

interface port-channel511

  vpc 511

interface port-channel512

  vpc 512

interface port-channel513

  vpc 513

interface port-channel514

  vpc 514

interface port-channel515

  vpc 515

interface port-channel516

  vpc 516

interface port-channel517

  vpc 517

interface port-channel800

  vpc peer-link

VPC Configuration on Secondary Nexus 3064

!Command: show running-config vpc

!Time: Tue Apr  3 13:19:22 2012

version 5.0(3)U2(2a)

feature vpc

vpc domain 1

  role priority 800

  peer-keepalive destination 10.10.1.1 source 10.10.1.2

  delay restore 300

  peer-gateway

  auto-recovery reload-delay 300

interface port-channel1

  vpc 2

interface port-channel510

  vpc 510

interface port-channel511

  vpc 511

interface port-channel512

  vpc 512

interface port-channel513

  vpc 513

interface port-channel514

  vpc 514

interface port-channel515

  vpc 515

interface port-channel516

  vpc 516

interface port-channel517

  vpc 517

interface port-channel800

  vpc peer-link

Everyone's tags (6)
693
Views
0
Helpful
0
Replies
CreatePlease to create content