CDP Question?

HI,

Just want to ask, why i am seeing my device and interface as cdp neighbor?

Topology:

(CE)---------(g8)RTR01(g7)---------(G0/0/01)RTR02(G0/0/0)---------(CE)

Description:

RTR01 - Name: 6798-ib Device: C891F-K9

RTR02- Name: 6798 Device: ISR422

^{rotacl-spo-6798-ib#sh cdp neighbors}

^{Device ID Local Intrfce Holdtme Capability Platform Port ID}

^{6798-ib Gig 7 126 R B S I C891F-K9 Gig 8}

^{6798-ib Gig 8 163 R B S I C891F-K9 Gig 7}

^{6798 Gig 8 172 R S I ISR4221/K Gig 0/0/1}

^{6798 Gig 7 172 R S I ISR4221/K Gig 0/0/1}

im using single line to RTR1 to RTR2 but seems theres duplicate neighbor. tried clear cdp table but still the same?

anyone encountered this kind of issue?

Thanks