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Protocol » Generic Routing Encapsulation (Info)
Viewing 1 - 3 of 3 captures
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mGRE_ICMP.cap (3.7 KB)

Packets: 24 Avg Size: 139 bytes Duration: 10.1 sec
Data Rate: 2.59 Kbps Added: 22 Jul 2008 Downloads: 484

R2 begins sending ICMP traffic to R4, but it currently only has a GRE tunnel open to R1. The first two ICMP requests (packets #1 and #4) are routed through R1 while R2 sends an NHRP request to R1 for R4's spoke address. Once a GRE tunnel is dynamically built between spoke routers R2 and R4, R2 begins routing the ICMP traffic directly to R4. Capture perspective from the R2-R5 link.

NHRP_registration.cap (648 bytes)

Packets: 4 Avg Size: 140 bytes Duration: 0.0 sec
Data Rate: 121.60 Kbps Added: 22 Jul 2008 Downloads: 339

R2 registers a multipoint GRE tunnel with R1. Capture perspective from the R1-R5 link.

GRE.cap (1.5 KB)

Packets: 10 Avg Size: 138 bytes Duration: 0.2 sec
Data Rate: 70.92 Kbps Added: 21 Jun 2008 Downloads: 349

ICMP is encapsulated into a Generic Routing Encapsulation (GRE) tunnel.

Viewing 1 - 3 of 3 captures