Zte ZXR10 ZSR V2 - Figure 17-5 Forwarding a Message out of a 6 Rd Domain

ZXR10ZSRV2CongurationGuide(IPv6)
theBRaddress.Uponreceiptofthemessage,BRobtainstherawIPv6message
afteradecapsulation,andforwardsittoPC3(oranIPv6WAN).
Figure17-5ForwardingaMessageoutofa6rdDomain
CPE1worksasfollows:
1.Uponreceiptofamessagedestinedfor200:1,CPE1determinesthatthenext-hop
isthetunnelbasedontheIPv6route(::/0->tunnel1via2001:db8:0:100:).
2.TheIPv6destinationaddressindicatesthatthemessageisaddressedtooutside
ofthedomain.ThismeansthatthemessageneedstobeforwardedbyBR,thatis,
thedestinationaddresstobeencapsulatedisthatofBR,andthesourceaddress
tobeencapsulatedisthatconguredforthetunnel.Performa6in4encapsulation.
3.Searchtheroute,andforwardthemessagetoBR.
BRworksasfollows:
1.Checkwhetherthereisa6rdlabelontheIPv4route.
2.Ifthe6rdlabelisfound,decapsulatethemessage.
3.Forwardthemessageto200::1.
lForwardingamessagetoa6rddomain
UponreceiptofamessagefromaWAN,BRperformsadecapsulation,andgetsthe
CPE1IPv4addressfromthecarriedIPv6destinationaddress,seeFigure17-6.It
thenencapsulatesthemessageintoa6in4tunnel,andforwardsittoCPE1.Aftera
decapsulation,CPE1getstherawIPv6message,andforwardsittothedestination
devicewithinthe6rddomain.
17-4
SJ-20140504150128-018|2014-05-10(R1.0)ZTEProprietaryandCondential