IPv6 over Frame Relay – Multipoint

【實驗拓撲】

【實驗配置向導】

• 使用網絡位址為2001：CC1E:1:2::/64 主機位址為modified EUI-64 配置R1與R2的序列槽。
• 在R1與R2之間配置幀中繼鍊路

【實驗配置】

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

【實驗驗證】

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

【實驗總結】

與Ipv4 over 幀中繼相似，在IPv6運作在點到多點的幀中繼時，幀中繼需要3層與2層位址之間的映射關系，然而幀中繼目前不支援ipv6的反向鄰居發現，但ipv4 支援。是以ipv6 在點到多點的幀中繼上運作時必須使用fram-map 來手工指定3層與2層之間的映射。

同時配置中沒有broadcast選項的原因是ipv6沒有廣播包。

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.