2260路由器和5560交换机配置问题

1、2260配置： interface LoopBack100 ip address 10.211.67.30 255.255.255.255 # interface GigabitEthernet0/0/0 port link-mode route combo enable copper ip address 172.19.140.114 255.255.255.252 tcp mss 1280 # interface Tunnel0 mode gre ip address 10.1.1.10 255.255.255.252 source LoopBack100 destination 172.31.2.1 keepalive 5 3 gre checksum # interface Tunnel2 mode gre ip address 6.6.6.10 255.255.255.252 pim sm igmp enable source LoopBack100 destination 10.1.0.1 keepalive 5 3 # ip route-static 10.1.0.0 24 Tunnel0 ip route-static 172.31.2.1 32 172.19.140.113 [H3C]dis int tu Tunnel0 Current state: UP Line protocol state: UP Description: Tunnel0 Interface Bandwidth: 64 kbps Maximum transmission unit: 1472 Internet address: 10.1.1.10/30 (Primary) Tunnel source 10.211.67.30 (LoopBack100), destination 172.31.2.1 Tunnel keepalive enabled, Period(5 s), Retries(3) Tunnel TTL 255 Tunnel protocol/transport GRE/IP GRE key disabled Checksumming of GRE packets enabled Output queue - Urgent queuing: Size/Length/Discards 0/1024/0 Output queue - Protocol queuing: Size/Length/Discards 0/500/0 Output queue - FIFO queuing: Size/Length/Discards 0/75/0 Last clearing of counters: Never Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec Input: 5966049 packets, 4849031555 bytes, 0 drops Output: 30880437 packets, 24148022615 bytes, 1 drops Tunnel2 Current state: UP Line protocol state: UP Description: Tunnel2 Interface Bandwidth: 64 kbps Maximum transmission unit: 1448 Internet address: 6.6.6.10/30 (Primary) Tunnel source 10.211.67.30 (LoopBack100), destination 10.1.0.1 Tunnel keepalive enabled, Period(5 s), Retries(3) Tunnel TTL 255 Tunnel protocol/transport GRE/IP GRE key disabled Checksumming of GRE packets disabled Output queue - Urgent queuing: Size/Length/Discards 0/1024/0 Output queue - Protocol queuing: Size/Length/Discards 0/500/0 Output queue - FIFO queuing: Size/Length/Discards 0/75/0 Last clearing of counters: Never Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec Last 300 seconds output rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec Input: 5718510 packets, 4673187666 bytes, 0 drops Output: 30742465 packets, 23377026148 bytes, 39 drops 2、5560配置： service-loopback group 1 type tunnel # interface LoopBack100 ip address 10.211.67.30 255.255.255.255 # interface GigabitEthernet1/0/22 port link-mode route ip address 172.19.140.114 255.255.255.252 tcp mss 1280 # interface Ten-GigabitEthernet1/0/25 port link-mode bridge port service-loopback group 1 # interface tunnel0 mode gre ip address 10.1.1.10 255.255.255.252 source LoopBack100 destination 172.31.2.1 keepalive 5 3 # interface Tunnel1 mode gre ip address 6.6.6.10 255.255.255.252 source LoopBack100 destination 10.1.0.1 keepalive 5 3 # ip route-static 10.1.0.0 24 Tunnel0 ip route-static 172.31.2.1 32 172.19.140.113 return [H3C]dis int tu Tunnel0 Current state: UP Line protocol state: UP Description: Tunnel0 Interface Bandwidth: 64 kbps Maximum transmission unit: 1476 Internet address: 10.1.1.10/30 (primary) Tunnel source 10.211.67.30 (LoopBack100), destination 172.31.2.1 Tunnel keepalive enabled, Period(5 s), Retries(3) Tunnel TTL 255 Tunnel protocol/transport GRE/IP GRE key disabled Checksumming of GRE packets disabled Last clearing of counters: Never Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec Last 300 seconds output rate: 14 bytes/sec, 112 bits/sec, 0 packets/sec Input: 24 packets, 1260 bytes, 0 drops Output: 3231 packets, 117216 bytes, 1 drops Tunnel1 Current state: UP Line protocol state: DOWN Description: Tunnel1 Interface Bandwidth: 64 kbps Maximum transmission unit: 1452 Internet address: 6.6.6.10/30 (primary) Tunnel source 10.211.67.30 (LoopBack100), destination 10.1.0.1 Tunnel keepalive enabled, Period(5 s), Retries(3) Tunnel TTL 255 Tunnel protocol/transport GRE/IP GRE key disabled Checksumming of GRE packets disabled Last clearing of counters: Never Last 300 seconds input rate: 0 bytes/sec, 0 bits/sec, 0 packets/sec Last 300 seconds output rate: 4 bytes/sec, 32 bits/sec, 0 packets/sec Input: 0 packets, 0 bytes, 0 drops Output: 1608 packets, 38772 bytes, 1 drops 组网及组网描述： 两台设备配置同样的配置，但是5560的tu2为down， 并且2600的物理口抓包可以抓到收发的数据包，但是5560物理口只能抓到收的数据包 请求指导

配置及接口信息如上，为什么2260的tun2可以通，但是5560的通不了 隧道两端路由是可达的