[c-nsp] MPLS load-balancing on ME-3800X
Tassos Chatzithomaoglou
achatz at forthnetgroup.gr
Mon Mar 5 05:12:24 EST 2012
Looking for MPLS load-balancing on ME-3800X, the page
http://www.cisco.com/en/US/docs/switches/metro/me3600x_3800x/software/release/12.2_52_ey/configuration/guide/swmpls.html
includes just the following note:
================================================================================
/For information about load balancing, see this URL:
http://www.cisco.com/en/US/docs/routers/7600/ios/12.2SR/configuration/guide/pfc3mpls.html#wp1347055
/
================================================================================
which leads to the following:
================================================================================
/Basic MPLS Load Balancing
The maximum number of load balancing paths is 8. The PFC forwards MPLS labeled packets
without explicit configuration. If the packet has three labels or less and the underlying
packet is IPv4, then the PFC uses the source and destination IPv4 address. If the
underlying packet is not IPv4 or more than three labels are present, the PFC parses down
as deep as the fifth or lowest label and uses it for hashing.
MPLS Layer 2 VPN Load Balancing
Load balancing is based on the VC label in the MPLS core if the first nibble of the MAC
address in the customer Ethernet frame is not 4.
Note Load balancing is not supported at the ingress PE for Layer 2 VPNs. Load balancing is
done based on the VC label and it is pre-selected.
MPLS Layer 3 VPN Load Balancing
MPLS Layer 3 VPN load balancing is similar to basic MPLS load balancing. /
================================================================================
Is this the way ME-3800X also works?
--
Tassos
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