No default-gateway but I can still ping outside of subnet?!?
I have two 3750 switches in a stack that does not have a default-gateway statement yet when I telnet to that stack, I can ping a device that is on a different subnet. The switches are L2 only and are uplinked to two distribution layer 6509 routers that are running GLBP between them.
Isn't the default-gateway command necessary for communications to subnets other than what the stack has locally? I've only had one cup of coffee this morning and maybe that's where the problem is.
CSB-SW73-15-216#sh run int vlan 73
Current configuration : 65 bytes
ip address 126.96.36.199 255.255.255.128
CSB-SW73-15-216#sh ip route
Default gateway is not set
Host Gateway Last Use Total Uses Interface
ICMP redirect cache is empty
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 188.8.131.52, timeout is 2 seconds:
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms
Re: No default-gateway but I can still ping outside of subnet?!?
I believe that it is true that for RELIABLE access to outside subnets there should be a default gateway. As you have discovered switches such as the 3750 will ARP for remote destinations if they do not have a default gateway. And as Edison has pointed out for the connection to work the next hop router must have proxy arp enabled. And if proxy arp is disabled then you will not have remote connectivity without a default gateway configured.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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