EoMPLS port mode (1500 MTU)
1500 Bytes Edge MTU
+ 14 Bytes L2 Transport (6 Bytes SRC mac + 6 Bytes DST mac + 2 Bytes VLAN type)
+ 4 Bytes AToM Control Word (If not use control word, its 0)
+ 8 Bytes MPLS Header (2 x LSE * 4 Bytes[20 Bit Label + 3 Bit Exp field + 1 Bit + 8 Bit TTL] Each)
= 1526 Bytes (Minimum Requirement PE MPLS MTU)
= 1474 Bytes TCP Maximum segment size
EoMPLS VLAN mode (1500 MTU)
1500 Bytes Edge MTU
+ 18 Bytes L2 Transport (6 Bytes SRC mac + 6 Bytes DST mac + 2 Bytes VLAN type + 4 Bytes VLAN tag)
+ 4 Bytes AToM Control Word (If not use control word, its 0)
+ 8 Bytes MPLS Header (2 x LSE * 4 Bytes[20 Bit Label + 3 Bit Exp field + 1 Bit + 8 Bit TTL] Each)
= 1530 Bytes (Minimum Requirement PE MPLS MTU)
= 1470 Bytes TCP Maximum segment size
EoMPLS Port mode + TE FRR (1500 MTU)
1500 Bytes Edge MTU
+ 14 Bytes L2 Transport (6 Bytes SRC mac + 6 Bytes DST mac + 2 Bytes VLAN type)
+ 4 Bytes AToM Control Word (If not use control word, its 0)
+ 12 Bytes MPLS Header (3 x LSE * 4 Bytes[20 Bit Label + 3 Bit Exp field + 1 Bit + 8 Bit TTL] Each)
= 1530 Bytes (Minimum Requirement PE MPLS MTU)
= 1470 Bytes TCP Maximum segment size
EoMPLS VLAN mode + TE FRR (1500 MTU)
1500 Bytes Edge MTU
+ 18 Bytes L2 Transport (6 Bytes SRC mac + 6 Bytes DST mac + 2 Bytes VLAN type + 4 Bytes VLAN tag)
+ 4 Bytes AToM Control Word (If not use control word, its 0)
+ 12 Bytes MPLS Header (3 x LSE * 4 Bytes[20 Bit Label + 3 Bit Exp field + 1 Bit + 8 Bit TTL] Each)
= 1534 Bytes (Minimum Requirement PE MPLS MTU)
= 1466 Bytes TCP Maximum segment size
'Network > Service Provider' 카테고리의 다른 글
| Tunneling (3) Multicast (0) | 2014.10.08 |
|---|---|
| Tunneling (2) IPv6 Tunneling (0) | 2014.10.08 |
| Tunneling (1) GRE (0) | 2014.10.08 |
| Anycast (0) | 2014.10.07 |
| Multicast (8) Bidir-Pim (0) | 2014.10.07 |