01-22-2020 02:23 PM
I have a requirement to increase the ARP cache timeout for OTV in Cisco ASR 1001-X.
The default value is 10 minutes and i want to increase it to higher value.
Kindly please suggest a command to get this done.
## logs
Overlay Interface Overlay3
VPN name : htm-overlay3
VPN ID : 1
State : UP
Fwd-capable : Yes
Fwd-ready : Yes
AED-Server : Yes
Backup AED-Server : No
AED Capable : Yes
Join interface(s) : GigabitEthernet0/0/0
Join IPv4 address : 10.0.0.2
Tunnel interface(s) : Tunnel0
Encapsulation format : GRE/IPv4
Site Bridge-Domain : 2222
Capability : Unicast-only
Is Adjacency Server : Yes
Adj Server Configured : Yes
Prim/Sec Adj Svr(s) : 10.0.0.2
OTV instance(s) : 0
FHRP Filtering Enabled : Yes
ARP Suppression Enabled : Yes
ARP Cache Timeout : 600 seconds >>>>>>>>>>> I need to increase this from 10 minutes to 4 hours.
01-22-2020 03:42 PM
before changing the arp time, i would suggest reading this article.(you need to adjust other factors also here)
https://netcraftsmen.com/otv-best-practices/
still, you like to change command - arp timeout XXX in seconds in respected interface.
01-22-2020 09:31 PM
Hello BB,
I meant to increase the OTV's arp cache time. This has nothing to do with the ARP timeout on the interface which is already set to 4 hours.
Kindly please do advise if there are any commands to increase OTV's ARP cache timeout. I think this has to do something with the ISIS protocol but i am not able to arrive on the exact command.
@balaji.bandi wrote:before changing the arp time, i would suggest reading this article.(you need to adjust other factors also here)
https://netcraftsmen.com/otv-best-practices/
still, you like to change command - arp timeout XXX in seconds in respected interface.
01-23-2020 12:35 AM
Can you post your OTV configuration look?
01-23-2020 03:15 AM
find below the configuration: i am using unicast adjacency server model and this is the adjacency server.
otv fragmentation join-interface GigabitEthernet0/0/0
otv fragmentation join-interface GigabitEthernet0/0/1
otv site-identifier 0000.0000.0007
interface Overlay3
no ip address
otv join-interface GigabitEthernet0/0/0
otv vpn-name htm-overlay3
otv use-adjacency-server 10.0.0.2 unicast-only
otv adjacency-server unicast-only
service instance 8 ethernet
encapsulation dot1q 8
bridge-domain 8
! i have more service instances.
01-23-2020 04:24 AM
Can you post :
show otv interface Overlay3 arp-nd-cache
01-23-2020 05:49 AM
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