| % ERSPAN |
| |
| + ERSPAN I |
| = Build & dissect ERSPAN 1 |
| |
| pkt = GRE()/ERSPAN_I()/Ether() |
| pkt = GRE(bytes(pkt)) |
| assert ERSPAN in pkt |
| assert pkt.proto == 0x88be |
| assert pkt.seqnum_present == 0 |
| |
| + ERSPAN II |
| = Build ERSPAN II |
| |
| pkt = GRE()/ERSPAN_II()/Ether(src="11:11:11:11:11:11", dst="ff:ff:ff:ff:ff:ff") |
| b = bytes(pkt) |
| assert b == b'\x10\x00\x88\xbe\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\x11\x11\x11\x11\x11\x11\x90\x00' |
| |
| = Dissect ERSPAN II |
| |
| pkt = GRE(b) |
| assert pkt[GRE].proto == 0x88be |
| assert pkt[GRE].seqnum_present == 1 |
| assert pkt[GRE][ERSPAN].ver == 1 |
| assert pkt[Ether].src == "11:11:11:11:11:11" |
| |
| + ERSPAN III |
| = Build & dissect ERSPAN III with platform specific |
| |
| pkt = GRE()/ERSPAN_III()/ERSPAN_PlatformSpecific()/Ether() |
| pkt = GRE(bytes(pkt)) |
| assert pkt[GRE].proto == 0x22eb |
| assert pkt[ERSPAN_III].o == 1 |
| assert ERSPAN_PlatformSpecific in pkt |
| assert Ether in pkt |
| |
| = Build & dissect ERSPAN III without platform specific |
| pkt = GRE()/ERSPAN_III()/Ether() |
| pkt = GRE(bytes(pkt)) |
| assert pkt[GRE].proto == 0x22eb |
| assert pkt[ERSPAN_III].o == 0 |
| assert ERSPAN_PlatformSpecific not in pkt |
| assert Ether in pkt |
| |
