03-31-2010 05:42 AM - edited 03-06-2019 10:24 AM
Hi all,
I did sh arp on router
2650xm#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 96.51.x.x - 000f.8f6d.7e60 ARPA FastEthernet0/0
Internet 192.168.1.40 95 000b.be59.cc60 ARPA FastEthernet1/0
Internet 192.168.1.11 199 0015.e9cf.190b ARPA FastEthernet1/0
Internet 192.168.1.10 224 000b.bece.bbc0 ARPA FastEthernet1/0
Internet 192.168.1.1 - 000f.8f6d.7e70 ARPA FastEthernet1/0
Internet 192.168.1.3 8 0026.c64a.b844 ARPA FastEthernet1/0
Internet 96.51.145.70 38 0013.46d2.fb11 ARPA FastEthernet0/0
Internet 96.51.144.1 0 0011.20a8.04a7 ARPA FastEthernet0/0
Here 96.51.x.x is ip of fa0/0 interface of my router and it directly connects to cable modem
96.51.144.1 is my next hop route.
my question is why i see - under age for fa0/0 interface ip of my router and 0 for next hop ip 96.51.144.1 ?
They do not change remail same - and 0 under age field.
mahesh
Solved! Go to Solution.
03-31-2010 06:11 AM
Mahesh
The age time in the output is the amount of time the entry has been cached without being renewed. Because there is constant traffic from your router to the next-hop the cache will forever be being renewed so that is why you see it as 0 most of the time.
Jon
03-31-2010 05:51 AM
Mahesh
- under the age field simply means the address is local to the router ie. it is configured on the router.
Jon
03-31-2010 05:57 AM
Hi Jon
thanks for reply yes that is correct
so what does 0 mean under age field?
mahesh
03-31-2010 06:11 AM
Mahesh
The age time in the output is the amount of time the entry has been cached without being renewed. Because there is constant traffic from your router to the next-hop the cache will forever be being renewed so that is why you see it as 0 most of the time.
Jon
03-31-2010 06:20 AM
H Jon
Many thanks again for your explanation
regards
mahesh
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