[19595] in North American Network Operators' Group
Re: How to loadshare over many E1 links
daemon@ATHENA.MIT.EDU (Scott Whyte)
Fri Sep 18 12:05:44 1998
Date: Fri, 18 Sep 1998 08:40:27 -0700
To: Jesper Skriver <jesper@skriver.dk>, nanog@merit.edu
From: Scott Whyte <swhyte@cisco.com>
Cc: tdk-backbone@t.dk
In-Reply-To: <19980918095708.B10051@skriver.dk>
Jesper,
You might consider MLP (multi-link PPP), with VIP2/50's.
If you do go with an IMUX, I definitely recommend a HSSI to the routers, rather than Ethernet, unless the Ethernet is full-duplex. I've seen really poor performance due to collisions on the Ethernets at either end because the middle is actually 16Mbps full-duplex...
Scott
At 12:57 AM 9/18/98 , Jesper Skriver wrote:
>Hi,
>
>How would you loadshare over many (>6) parallel E1 links. Currently we
>do it by connecting them directly to the Cisco's in each end, and do
>CEF based per-packet loadsharing, it works fine, but support a max of
>6 E1's ...
>
>I've been thinking om something similar to the Larscom inverse MUX
>(http://www.larscom.com/t3ft3/t3_megae.htm), but this one only support
>4 E1's, then I can use multiple i-mux's and loadshare over the 8M links
>they provide, but it seems like a poor solution.
>
>Yes, I do know that a E3 would be a far better choice, but our ADM
>(Add-Drop-Multiplexer??) at this specific location only support
>E1's :-(
>
>/Jesper
>
>--
>Jesper Skriver (JS249-RIPE), Network manager
>Tele Danmark DataNet, IP section (AS3292)
>
>One Unix to rule them all, One Resolver to find them,
>One IP to bring them all and in the zone to bind them.
>
----
Scott Whyte |"Computers are different from telephones.
Network Supported Accounts | Telephones ring. Computers do not ring."
CCIE | -- Andrew S. Tanenbaum
