Virtual Private LAN Service
238
FD 100/320Gbps NT and FX NT IHub Services Guide
3HH-11985-AAAA-TQZZA Issue: 13
exit
no shutdown
exit
sap 1/1/19:600.* create
exit
no shutdown
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Example #3:
*A:PE25>config>service>vpls#
*A:PE26>config>service>vpls# info
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bgp
route-distinguisher 65026:600
route-target export target:65019:600 import target:65019:600
pw-template-bind 1
exit
bgp-vpls
max-ve-id 100
ve-name 26
ve-id 26
exit
no shutdown
exit
sap 5/2/20:600.* create
exit
no shutdown
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*A:PE26>config>service>vpls#
5.13.1 LDP Signaling
T-LDP is triggered once the VPN endpoints have been discovered using BGP. The
T-LDP session between the PEs is established when one does not exist. The far-end
IP address required for the T-LDP identification is gleaned from the BGP AD next hop
information. The pw-template and pw-template-bind configuration statements are
used to establish the automatic SDP or to map to the appropriate SDP. The FEC129
content is built using the following values:
• AGI from the locally configured VPLS-ID
• SAII from the locally configured VSI-ID
• TAII from the VSI-ID contained in the last 4 bytes of the received BGP NLRI
Figure 32 below shows the different detailed phases of the LDP signaling path, post
BGP AD completion. It also indicates how some fields can be auto generated when
they are not specified in the configuration.
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