Fc Mapping Based On Exp Bits At Vll/Vpls Sap - Alcatel-Lucent 7450 Quality Of Service Manual

QoS Policies

FC Mapping Based on EXP Bits at VLL/VPLS SAP

Figure 5: Example Configuration — Carrier's Carrier Application
ISP-1
Site A
To accommodate backbone ISPs who want to provide VPLS/VLL to small ISPs as a site-to-
site inter-connection service, small ISP routers can connect to Ethernet Layer 2 SAPs. The
traffic will be encapsulated in a VLL/VPLS SDP. These small ISP routers are typically PE
router. In order to provide appropriate QoS, the SR-Series router support a new classification
option that based on received MPLS EXP bits.
The lsp-exp command is will be supported in sap-ingress qos policy. This option can only be
applied on Ethernet Layer 2 SAPs.
# Rule
1 default-fc
2 IP criteria:
• Multiple entries per
policy
• Multiple criteria per
entry
50
PE-B
7x50-1
ISP-Ether-Header
ISP-Tunnel-Label
ISP-Svc-Label
ISP-Payload
Table 9: Forwarding Class Classification Based on Rule Type
Forwarding Class
Set the policy's default forwarding
class.
Set when an fc-name exists in the
entry's action. Otherwise, preserve
from the previous match.
MPLS LSP
VPLS/VLL
Backbone
Provider
7x50-2
BB-Link-Header ISP-Ether-Header
BB-Tunnel-Label ISP-Tunnel-Label
BB-Svc-Label ISP-Svc-Label
ISP-Ether-Header ISP-Payload
ISP-Tunnel-Label
ISP-Svc-Label
ISP-Payload
ISP-1
Site B
PE-B
OSSG257
Comments
All packets match the default rule.
When IP criteria is specified,
entries are matched based on
ascending order until first match
and then processing stops. A
packet can only match a single IP
criteria entry.
Quality of Service Guide