IPv6 over Frame Relay – Multipoint

【实验拓扑】

【实验配置向导】

• 使用网络地址为2001：CC1E:1:2::/64 主机地址为modified EUI-64 配置R1与R2的串口。
• 在R1与R2之间配置帧中继链路

【实验配置】

interface Serial0/0

encapsulation frame-relay

ipv6 address 2001:CC1E:1:2::/64 eui-64

frame-relay map ipv6 2001:CC1E:1:2:C801:5FFF:FEA0:0 102

frame-relay map ipv6 2001:CC1E:1:2:0:FFFF:FE10:45C5 201

【实验验证】

R1#ping 2001:CC1E:1:2:C801:5FFF:FEA0:0

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2001:CC1E:1:2:C801:5FFF:FEA0:0, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 4/17/56 ms

R1#show fram map

Serial0/0 (up): ipv6 2001:CC1E:1:2:C801:5FFF:FEA0:0 dlci 102(0x66,0x1860), static,

CISCO, status defined, active

R1#show ipv6 int brief

Serial0/0 [up/up]

FE80::FFFF:FE10:45C5

2001:CC1E:1:2:0:FFFF:FE10:45C5

Serial0/1 [administratively down/down]

Serial0/2 [administratively down/down]

Serial0/3 [administratively down/down]

R2#show ipv6 interface brief

FastEthernet0/0 [administratively down/down]

unassigned

FE80::C801:5FFF:FEA0:0

2001:CC1E:1:2:C801:5FFF:FEA0:0

【实验总结】

与Ipv4 over 帧中继相似，在IPv6运行在点到多点的帧中继时，帧中继需要3层与2层地址之间的映射关系，然而帧中继目前不支持ipv6的反向邻居发现，但ipv4 支持。因此ipv6 在点到多点的帧中继上运行时必须使用fram-map 来手工指定3层与2层之间的映射。

同时配置中没有broadcast选项的原因是ipv6没有广播包。

Similar to IPv4 over multipoint Frame Relay interfaces, Frame Relay requires layer 3 to layer 2 resolution when running IPv6 over multipoint Frame Relay interfaces. As of the current IOS releases however, Frame Relay does not yet support IPv6 Inverse Neighbor Discovery, which is analogous to Frame Relay Inverse-ARP for IPv4. This implies that multipoint Frame Relay interfaces running IPv6 must be configured with static layer 3 to layer 2 resolution through the frame-relay map ipv6 statement.