I'm in this scenario: Multihomed site, Router1 linked to ISP1 and Router2 linked to ISP2.
Both Routers have the interface FastEthernet 0/0 with IP address belonging to the same network. GLBP is implemented in a round-robin fashion.
The routing table is quite simple: 1 static route pointing to the internal network and 1 default route pointing to the ISP's next-hop router.
Behind them, there is an ASA firewall, acting as termination point for VPN Remote access and L2L. ASA has only one default static route outside pointing to the virtual ip address advertized by GLBP (as well as an inside route pointing the the internal network)
The question i have is this: is it suitable deploying the GLBP in this scenario with loadsharing between the 2 links?
The load sharing is done on a per-packet basis or per-connection basis?
For example, if a VPN user connects to the corporate network using ISP2, do the traffic will flow for the whole session between ASA and R2 or some packet will be routed to the remote host across R1?
Thank you anticipately
"if an outside user connects to the corporate LAN using for example, a public IP belonging to the ISP2's pool (VPN Remote access terminated on the ASA), the whole session will flow across R2 or do the packets will be switched between R1 and R2"
The whole session will be through R2.
HSRP is only first hop which is from Corportae to outside. For ur outside user to have load balncing they also shd load sharing setup at their end.
you can install two default static routes on the ASA so you can get load balancing.
GLBP just operates during ARP resolution of default gateway IP for this reason is not effective when there is only one client.
If you only receive default routes the iBGP session is rather useless
Hope to help