Re: [EFM] OAM loop back / echo server function
At 09:34 AM 9/6/01 -0400, Fletcher E Kittredge wrote:
On Wed, 05 Sep 2001 09:23:46 -0700
"Geoff Thompson" wrote:
> This brings up the much uglier issue of discovery, also a topic that
> always been outside the scope of 802.3.
> If there is going to be a bridge or router at the demarc then there
> have to be a discovery process that effectively logs the MAC address
> the service provider's system. The service provider won't be able to
> Ping/Echo the box until it knows the MAC address.
I believe most switches log MAC addresses for routing purposes
Actually, (fine semantic distinction here) Ethernet switches don't do
routing (that's what routers do). Switches do accumulate addresses to
build/maintain filter tables so they don't have to send all packets to
and those MAC addresses can be recovered via
SNMP queries using
DOCSIS had the same problem. One also wants to record all MACs
the CPE equipment and IPs for these customer devices as
solution has been RFC-3046
which adds a chain
of Relay Agent Information to the DHCP packet[s] in the options
fields. This is a great spec which is now widely implemented
cable modem providers.
So if the ESLAM responds to a super-set of standard Ethernet MIBs,
this is a solved problem.