#Cisco mac address 0000.0c9f. how to#
#Cisco mac address 0000.0c9f. software#

The defect is present in NXOS and not on the platform so the issue is present on all switches which run NXOS.

HSRP configuration may work initially but fails after a reload and will disruption as HSRP VIP never comes up. R2show standby FastEthernet0/0 - Group 11 (version 2) State is Standby 3 state changes, last state change 00:16:09 Virtual IP address is 10.0.0.1 Active virtual MAC address is 00B Local virtual MAC address is 00B (v2 default) Hello time 3 sec, hold time 10 sec Next hello sent in 0. Note: HSRP Version 2 uses a new MAC address which ranges from 000 to. Vlan2250 2250 100 Listen unknown 10.1.1.3 10.1.1.1 (conf) The 'virtual MAC address' is (XX is the hexadecimal group number) so it is using HSRPv1. Interface Grp Prio P State Active addr Standby addr Group addr Expectation is for both VLANs to come up: Reload both switches (Broken VLAN 2251 doesn't come up, Working VLAN 2250 does come up): !Running configuration last done at: Sat Aug 1 10:23:49 2020 !Command: show running-config interface Vlan2250-2251 N3K-C3172PQ-2# show run int vlan 2250-2251 Current configuration : 304 bytes interface Vlan1029 description Configured from Cisco DNA-Center mac-address 464 vrf forwarding CorpVN ip address 192.2.31.1 255.255.255.0 ip helper-address 172.16.24.13 no ip redirects ip route-cache same-interface no lisp mobility liveness test lisp mobility CorpUsers-IPV4 end // LISP. Authentication text 'cisco' Virtual mac address is 00a (Default MAC) 2 state changes, last state change 00:01:57 IP redundancy name is hsrp-Vlan10-10 (default).

#Cisco mac address 0000.0c9f. how to#

Have you any guesses why this happens or how to solve it, so I havn't to change the entry if the Server or the Default Gateway (redundant ip) changes.- For Nexus we see broken VLAN 2251 with static HSRP MAC configured, after reload HSRP gets stuck in 'Initial' state, but should move to next states as seen for working VLAN 2250. This is verbatim from Cisco documentation. State is Standby 7 state changes, last state change 5w5d Active virtual MAC address is 065 Local virtual MAC address is 065 (v2 default) Hello time 3 sec, hold time 10 sec Next hello sent in 0.936 secs.

#Cisco mac address 0000.0c9f. software#

we had another IOS version bevor this one and it havn't worked eatherДЄs a workaround I could make a static arp entry with the MAC address of the default gateway or the Prime and it will work stable. Use Cisco Feature Navigator to find information about platform support and Cisco software image support.

HSRP version 2 permits an expanded group number range, 0 to 4095, and consequently uses a new MAC address range 000 to.

I already searched for a bug report at the cisco website but havn't found anything about this. This new multicast address allows CGMP leave processing to be enabled at the same time as HSRP.

there arent any ACLs as the standard вЂ“ permit line.

If I delete the arp entry it will work for a few minutes after that the switch generates the entry seen a few lines above.

Is HSRP a routing protocol HSRP is not a routing protocol as it does not advertise IP routes or affect the routing table in any way. Standby router is 10.149.236. Which MAC address is an HSRP version 2 0000.0C9F HSRP version 2 permits an expanded group number range, 0 to 4095, and consequently uses a new MAC address range 0000.0C9F. Local virtual MAC address is 00A (v2 default) Hello time 3 sec, hold time 10 sec.

It is just for this address (as far as I know) all other devices could ping the switch Active virtual MAC address is 0000.0C9F.0000. i have used traceroute mac 0000.0000.000a 0000.0000.

For general there wont be any arp entry for the 172.16.2.103 because the traffic will first go to the default gatewayвЂ¦.

Protocol Address Age (min) Hardware Addr Type Interface I found out following facts: show arp on 192.168.10.19:

Our Stacked Switch (two WS-C2960X-48LPS-L вЂ“ 15.2(2)E3 вЂ“ 192.168.10.19 вЂ“ VLAN 10) wont be reachable via ICMP or SNMP by the Cisco Prime Infrastructure (172.16.2.103 вЂ“ VLAN1) and back.