ZyXEL Communications GS2210-8 User Manual page 264

Table 119 Advanced Applicat ion > Layer 2 Prot ocol Tunneling ( cont inued)
LABEL DESCRIPTION
STP Select t his opt ion t o have t he Swit ch t unnel STP ( Spanning Tree Prot ocol) packet s so t hat
STP can run properly across t he service provider 's net work and spanning t rees can be set
up based on bridge inform at ion from all ( local and rem ot e) net works.
VTP Select t his opt ion t o have t he Swit ch t unnel VTP ( VLAN Trunking Prot ocol) packet s so t hat
all cust om er swit ches can use consist ent VLAN configurat ion t hrough t he service provider 's
net work.
Point t o Point The Swit ch support s PAgP ( Port Aggregat ion Prot ocol) , LACP ( Link Aggregat ion Cont rol
Prot ocol) and UDLD ( UniDirect ional Link Det ect ion) t unneling for a point- t o- point t opology.
Bot h PAgP and UDLD are Cisco's propriet ary dat a link layer prot ocols. PAgP is sim ilar t o
LACP and used t o set up a logical aggregat ion of Et hernet port s aut om at ically. UDLD is t o
det erm ine t he link's physical st at us and det ect a unidirect ional link.
PAGP Select t his opt ion t o have t he Swit ch send PAgP packet s t o a peer t o aut om at ically negot iat e
and build a logical port aggregat ion.
LACP Select t his opt ion t o have t he Swit ch send LACP packet s t o a peer t o dynam ically creat es
and m anages t runk groups.
UDLD Select t his opt ion t o have t he Swit ch send UDLD packet s t o a peer 's port it connect ed t o
m onit or t he physical st at us of a link.
Mode Select Acce ss t o have t he Swit ch encapsulat e t he incom ing layer 2 prot ocol packet s and
forward t hem t o t he t unnel port ( s) . Select Acce ss for ingress port s at t he edge of t he
service provider's net work.
Note: You can enable L2PT services for STP, LACP, VTP, CDP, UDLD, and PAGP on the
access port(s) only.
Select Tu n n e l for egress port s at t he edge of t he service provider's net work. The Swit ch
decapsulat es t he encapsulat ed layer 2 prot ocol packet s received on a t unnel port by
changing t he dest inat ion MAC address t o t he original one, and t hen forward t hem t o an
access port . I f t he service( s) is not enabled on an access port , t he prot ocol packet s are
dropped.
Apply Click Apply t o save your changes t o t he Swit ch's run- t im e m em ory. The Swit ch loses t hese
changes if it is t urned off or loses power, so use t he Sa ve link on t he t op navigat ion panel t o
save your changes t o t he non- volat ile m em ory when you are done configuring.
Cancel Click Ca n ce l t o begin configuring t his screen afresh.
Chapter 28 Layer 2 Protocol Tunneling
GS2210 Series User's Guide
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